Selected Publications

Heinz Langhals

271. H. Langhals, S. Kinzel, A. Obermeier, 'One-Step Cascade Synthesis of ortho-bay-Imidazolo-Extended Perylene Biscarboximides (OBISIM) and Their Application as Broad-Spectrum Fluorescent Dyes',
J. Org. Chem. 2024, 89, 2138-2154; DOI:

270. H. Langhals, 'How the Concept of Solvent Polarity Investigated with Solvatochromic Probes Helps Studying Intermolecular Interactions',
Liquids 2023, 3, 481-511; DOI:

269. Yi Xu, L. Mewes, E. Thyrhaug, V. Sláma, F. Šanda, H. Langhals, J. Hauer, 'Isolating Pure Donor and Acceptor Signals by Polarization-Controlled Transient Absorption Spectroscopy',
J. Phys. Chem. Lett. 2023, 14; DOI:

268. H. Langhals, T. Schlücker, 'Reply to “Comment on ‘Dependence of the Fluorescent Lifetime τ on the Concentration at High Dilution’”: Extended Interpretation',
J. Phys. Chem. Lett. 2023, 14, 1457-1459; DOI:

267. H. Langhals, T. Schlücker, 'Dependence of the Fluorescent Lifetime τ on the Concentration at High Dilution',
J. Phys. Chem. Lett. 2022, 13, 7568-7573; DOI:

266. H. Langhals, C. Dietl, 'Vibronic Intramolecular Resonant Energy Transfer along More than 5 nm: Synthesis of Dyads for a Re-Examination of the Distance Function of FRET',
J. Org. Chem. 2022, 87, 9454-9465; DOI:

265. C. Yumusak, F. Mayr, D. Wielend, B. Kahraman, Y. Kanbur, H. Langhals, M. Irimia-Vladu, '1,7-Diazaperylene in organic field effect transistors',
Isr. J. Chem. 2022, 62;

264. H. Langhals, C. Dietl, S. Wiedbrauk, 'Balancing from FRET to SET and Further to Photochemistry',
Isr. J. Chem. 2021, 61;

263. H. Langhals, T. Schlücker, F. Reiners, K. Karaghiosoff, 'Terminal Terthiophenediones: Fast-decay Fluorescent Dyes and their Efficient Syntheses',
ACS Omega 2021, 6, 24973-24980;

262. H. Langhals, C. Dietl, P. Mayer, 'FRET in Orthogonal, Increasingly Strain-rigidified Systems',
Isr. J. Chem. 2021, 61;

261. H. Langhals, 'The Kinetics of SARS-Cov-2 Infections Analyzed by Means of Statistical Methods on the Basis of Official Data in Germany',
LOJ Phar. & Cli. Res. 2021, 2, 245-246; DOI: 10.32474/LOJPCR.2021.02.000145.

260. A. Monteleone,W. Schary, F. Wenzel, H. Langhals, D. Dietrich, 'Label-Free Identification and Differentiation of Different Microplastics Using Phasor Analysis of Fluorescence Lifetime Imaging Microscopy (FLIM)-Generated Data',
Chemico-Biological Interactions 2021, 342, 109466; DOI:

259. A. Monteleone, F. Wenzel, H. Langhals, D. Dietrich, 'New application for the identification and differentiation of microplastics based on fluorescence lifetime imaging microscopy (FLIM)',
J. Environm. Chem. Engineering 2021, 9, 104769; DOI:

258. H. Langhals, S. Reichherzer, P. Mayer, K. Polborn, 'A three-step synthesis of 1,7-diazaperylene and derivatives',
Synthesis 2021, 53, 713-722; DOI: 10.1055/s-0040-1707293.

257. V. Sláma, V. Perlík, H. Langhals, A. Walter, T. Mančal, J. Hauer, F. Šanda, 'Anharmonic molecular motion drives resonance energy transfer in peri-arylene dyads',
Front. Chem. 2020, 8, 579166; DOI:

256. H. Langhals, C. Dietl, J. Dahl, R. Carlson, Yaw-Terng Chern, P. Mayer, 'OrthoFRET in Diamantane FRET in Orthogonal Stiff Dyads; Diamond Restriction for Frozen Vibrations',
J. Org. Chem. 2020, 85, 11154-11169; DOI:

255. H. Langhals, 'The Quality Control of Alcoholic Components of Disinfectants by a Simple Colour Test',
S. Afr. J. Chem. 2020, 73, 81-83; DOI:

254. H. Langhals, 'Fluorescence and fluorescent dyes',
Phys. Sci. Revs. 2020, 5, 20190100; DOI:

253. H. Langhals, A. Walter, 'FRET in dyads with orthogonal chromophores and minimal spectral overlap',
J. Phys. Chem. A 2020, 124, 1554-1560; DOI:

252. M. Irimia-Vladu, Y. Kanbur, F. Camaioni, M. E. Coppola, C. Yumusak, C. V. Irimia, A. Vlad, A. Operamolla, G. M. Farinola, G. P. Suranna, N. González-Benítez, M. C. Molina, L. F. Bautista, H. Langhals, B. Stadlober, E. D. Głowacki, N. S. Sariciftci, 'On the stability of selected hydrogen-bonded semiconductors in organic electronic devices',
Chem. Mater. 2019, 31, 6315-6346; DOI: 10.1021/acs.chemmater.9b01405.

251. M. Wohlschläger, M. Versen, H. Langhals, 'A method for sorting of plastics with an apparatus specific quantum efficiency approach',
IEEE Sensors Applications Symposium (SAS) 2019, 19, 1-6;

250. H. Langhals, U. Ritter-Faizade, P. Stadler, M. Havlicek, A. Hofer, N. Serdar Sariciftci, 'Persistent radical anions in the series of peri-arylenes: Broadband light absorption until far in the NIR and purely organic magnetism',
Monatshefte für Chemie - Chemical Monthly 2019, 150, 885-900;

249. H. Langhals, M. Rauscher, P. Mayer, 'A sustainable preparation of functional perylenophanes by domino metathesis',
Green and Sustainable Chem. 2019, 9, 38-77;

248. H. Langhals, R. Greiner, T. Schlücker, A. Jakowetz, 'Light-driven molecular dynamics in perylenes with medium-controlled emission',
J. Org. Chem. 2019, 84, 5425-5430;

247. P. Václav, V. Sláma, C. N. Lincoln, H. Langhals, E. Riedle, T. Mančal, J. Hauer, F. Šanda, 'Geometric dependencies of vibronically mediated excitation transfer in rylene dyads',, e-Print Archive, Physics 2018, 1-8;

246. H. Langhals, 'Far-reaching field-mediated spin and orbital interactions',
SF J. Spin. Quan. Elect. 2018, 1:1, 100002;

245. H. Langhals, O. Krotz, 'A concept for a novel test for chemical parity',
Green and Sustainable Chem. 2018, 8, 311-319;

244. H. Langhals, 'Eine Zahl für den Stellenwert von Forschung',
Nachr. Chem. Tech. Lab. 2018, 66, 1080-1083.

243. T. Renger, M. Dankl, A. Klinger, T Schlücker, H. Langhals, F. Müh, 'Structure-based theory of fluctuation-induced energy transfer in a molecular dyad',
J. Phys. Chem. Lett. 2018, 9, 5940-5947; DOI: 10.1021/acs.jpclett.8b02403.

242. H. Langhals, D. Zgela, A. Haffner, C. Koschnick, K. Gottschling, C. Paulik, 'Functional organo-nano particles by RAFT copolymerisation',
Green and Sustainable Chem. 2018, 8, 247-274;

241. H. Langhals, 'From the general to the individual case - concepts on the test bench',
Nachr. Chem. Tech. Lab. 2018, 66, 601-604; DOI:10.1002/nadc.20184072731; Chem. Abstr. 2018, AN1086710.

240. S. Tombea, G. Adam, H. Heilbrunner, C. Yumusak, D. H. Apaydin, B. Hailegnaw, C. Ulbricht, C. J. Arendse, H. Langhals, E. Iwuohaa, N. S. Sariciftci, M. C. Scharber, 'The influence of perovskite precursor composition on the morphology and photovoltaic performance of mixed halide MAPbI3-xClx solar cells',
Solar Energy 2018, 163, 215-223;

239. H. Langhals, M. Eberspächer, 'A convenient synthesis of azulene',
Synthesis 2018, 50, 1862-1866; DOI: 10.1055/s-0036-1591906.

238. C. U. Missling, K. Sünkel, H. Langhals, W. Beck, 'Organometallic Lewis acids, part CXII. Chiral carbonyl-cyclopentadienyl-triphenylphosphine-iron and -ruthenium complexes with novel tertiary nitriles. [CpM(CO)(PPh3)(N≡C-CR1R2R3)]+ BF4- (M = Fe, Ru)',
ZAAC 2017, 643, 1262–1268; DOI: 10.1002/zaac.201700235.

237. H. Langhals, T. Schlücker, H. Ernst, 'Novel spectrophotometric protocol for the long-term characterization of the hue of artwork',
Analytical Lett. 2017, 50, 2270-2278;

236. H. Langhals, 'Interaction of components in molecular optoelectronics for the next generation of IT devices',
Scientific Review 2017, 3, 17-28;

235. H. Langhals, 'A concept for molecular addressing by means of far-reaching electromagnetic interactions in the visible',
J. Electr. & Electron. Systems 2017, 6, 215;

234. H. Langhals, M. Eberspächer, P. Mayer, 'Uncatalysed C-H amination of aromatics under unusually mild conditions, with negative enthalpies of activation',
Asian J. Org. Chem. 2017, 6, 1080-1085;

233. H. Langhals, 'Heterocyclic structures applied as efficient molecular probes for the investigation of chemically important interactions in the liquid phase',
Chem. Heterocycl. Compd. 2017, 53, 2-10; DOI: 10.1007/s10593-017-2014-z.

232. H. Langhals, 'Ein einfacher Demonstrationsversuch: Micellen als chemische Nano-Laboratorien',
Chemie in unserer Zeit 2017, 51, 156-160; DOI: 10.1002/ciuz.201600738.

231. R. Greiner, T. Schlücker, D. Zgela, H. Langhals, 'Fluorescent aryl naphthalene dicarboximides with large Stokes' shifts and strong solvatochromism controlled by dynamics and molecular geometry',
J. Mater. Chem. C 2016, 4, 11244-11252; DOI: 10.1039/C6TC04453K.

230. H. Langhals, 'Solvent skin - external and internal surfaces of liquids',
Nachr. Chem. Tech. Lab. 2016, 64, 1065-1070; Chem. Abstr. 2016, AN1849867.

229. H. Langhals, 'Nano-Micelles. Tiny, however, with big potential for chemistry',
G.I.T. Laboratory Journal EUROPE 2016, 2016/7-8, 24-25.

228. H. Langhals, 'Effizientes Sortieren von Kunststoffen',
analytica pro. Das offizielle Messe-Magazin 2016, 58-59.

227. H. Langhals, 'Nanomicelles. Tiny but full of possibilities for chemistry',
GIT Labor-Fachzeitschr. 2016, 60(1), 30-32; Chem. Abstr. 2016, AN1472897.

226. H. Langhals, D. Zgela, R. Lüling, 'Sexterrylenetetracarboxylic bisimides: NIR dyes',
J. Org. Chem. 2015, 80, 12146-12150; DOI: 10.1021/acs.joc.5b02092.

225. P. Kölle, I. Pugliesi, H. Langhals, R. Wilcken, A. Esterbauer, R. de Vivie-Riedle, E. Riedle, 'Hole-transfer induced energy transfer in perylene diimide dyads with a donor-spacer-acceptor motif',
Phys. Chem. Chem. Phys. 2015, 17, 25061-25072; DOI: 10.1039/c5cp02981c.

224. H. Langhals, M. Eberspächer, A. Hofer, 'Learning about structural and optical properties of organic compounds through preparation of functional nano micelles while avoiding hazardous chemicals or complicated apparatus',
J. Chem. Educ. 2015, 92, 1725-1729;

223. T. Schlücker, V. Dhayalan, H. Langhals, C. Sämann, P. Knochel, 'Soluble adamantyl-substituted oligothiophenes with short fluorescence decay: An approach for ultra fast optical signal processing',
Asian J. Org. Chem. 2015, 4, 763–769; DOI: 10.1002/ajoc.201500150.

222. H. Langhals, D. Zgela, T. Schlücker, 'Improved high performance recycling of polymers by means of bi-exponential analysis of their fluorescence lifetimes',
Green and Sustainable Chem. 2015, 5, 92-100;

221. H. Langhals, 'New ways for recycling. The "optical fingerprint" of plastics',
GIT Fachz. Lab. 2015, 59(3), 30-32; Chem. Abstr. 2015, AN822104.

220. C. Dietl, H. Hintz, B. Rühle, J. Schmedt auf der Günne, H. Langhals, St. Wuttke, 'Switch-on fluorescence of a perylene dye functionalized metal-organic framework via post-synthetic modification',
Chem. Eur. J. 2015, 21, 10714-10720;

219. H. Langhals, 'Cleanly recycled',
Nachr. Chem. Tech. Lab. 2015, 63(1), 23-25; Chem. Abstr. 2016, AN534566.

218. S. Thaler, C. Haritoglou, F. Schuettauf, T. Choragiewicz, C. A. May, F. Gekeler, M. D. Fischer, H. Langhals, A. Schatz, 'In vivo biocompatibility of a new cyanine dye for ILM peeling',
Eye (London, United Kingdom) 2015, 29, 428-435;; Chem. Abstr. 2014: AN2166562.

217. H. Langhals, D. Zgela, T. Schlücker, 'High performance recycling of polymers by means of their fluorescence lifetimes',
Green and Sustainable Chem. 2014, 4, 144-150;

216. H. Langhals, 'Handling electromagnetic radiation beyond terahertz using chromophores to transition from visible light to petahertz technology',
J. Electr. & Electron. Systems 2014, 3, 125;

215. S. Wuttke, C. Dietl, F. M. Hinterholzinger, H. Hintz, H. Langhals, T. Bein, 'Turn-on fluorescence triggered by selective internal dye replacement in MOFs',
Chem. Comm. 2014, 50, 3599-3601.

214. L. Flamigni, A. Zanelli, H. Langhals, B. Böck, 'Photoinduced processes in a dyad made of a linear and an angular perylene bisimide',
Photochem. Photobiol. Sci. 2013, 12, 2137-2145; DOI: 10.1039/c3pp50211b.

213. H. Langhals, S. Christian, A. Hofer, 'The substitution of aromatics by amines at room temperature with negative energy of activation: Amino peri-arylenes as metal-free components for dye-sensitized solar cells',
J. Org. Chem. 2013, 78, 9883-9891.

212. H. Langhals, T. Schmid, M. Herman, M. Zwiener, A. Hofer, 'Binary fluorescence labeling for the recovery of polymeric materials for recycling',
Int. J. Environm. Engin. Sci. Technol. Res. 2013, 7, 124-132.

211. H. Langhals, P. Braun, C. Dietl, P. Mayer, 'How many molecular layers of polar solvent molecules control chemistry? The concept of compensating dipoles',
Chem. Eur. J. 2013, 19, 13511-13521.

210. H. Langhals, A. Hofer, 'Chromophores arranged as 'magnetic meta atoms': Building blocks for molecular metamaterials',
J. Org. Chem. 2013, 78, 5889-5897.

209. H. Langhals, 'Nichteuklidische Geometrie in der Chemie?',
Nachr. Chem. Tech. Lab. 2013, 61, 425-427.

208. I. Pugliesi, H. Langhals, H. Kauffmann, E. Riedle, 'New perspectives on ultrafast Foerster Resonant Energy Transfer'
EPJ Web of Conferences 2013, 41, 05015; Chem. Abstr. 2013: 518675.

207. H. Langhals, 'NIR absorption of perylene dyes and fluorescence with large Stokes' shift by simple deprotonation'
Z. Naturforsch. 2013, 68b, 683-686; DOI: 10.5560/ZNB.2013-3090.

206. H. Langhals, 'Chromophores for picoscale optical computers'
in K. Sattler (ed.), Fundamentals of picoscience, p. 705-727, Taylor & Francis Inc. CRC Press Inc., Bosa Roca/US 2013; ISBN 13: 9781466505094, ISBN 10: 1466505095.

205. H. Langhals, 'Molekulare Spiegel und Abstandsmesser. FRET in neuem Gewand',
labor&more 2012, 8.12, 26-35.

204. H. Langhals, P. Knochel, A. Walter, S. Zimdars, 'Benzothiadiazoloperylenes and benzooxdiazoloperylenes: Amorphous functional materials',
Synthesis 2012, 44, 3465-3477.

203. H. Langhals, A. Hofer, 'Controlling UV/Vis absorption and Stokes' shifts in highly fluorescent chromophores by molecular dynamics in targeted construction of dyads',
J. Org. Chem. 2012, 77, 9585-9592.

202. H. Langhals, C. Dietl, A. Zimpel, P. Mayer, 'Noncovalent control of absorption and fluorescence spectra',
J. Org. Chem. 2012, 77, 5965-5970.

201. C. Haritoglou, M. Kernt, P. Laubichler, H. Langhals, K. Eibl, A. Varja, S. Thaler, A. Kampik, 'Synthesis, staining properties, and biocompatibility of a new cyanine dye for ILM peeling',
Graefe's Archive for Clinical and Experimental Ophthalmology 2012, 250, 829-838; DOI: 10.1007/s00417-012-1959-y.

200. P. Nalbach, I. Pugliesi, H. Langhals, M. Thorwart, 'Noise-induced Förster resonant energy transfer between orthogonal dipoles',
Physical Review. Lett. 2012, 108, 218302-1 - 218302-5.

199. H. Langhals, B. Böck, T. Schmid, A. Marchuk, 'Angular benzoperylenetetracarboxylic bisimides',
Chem. Eur. J. 2012, 18, 13188-13194;

198. B. Ventura, H. Langhals, B. Böck, L. Flamigni, 'Phosphorescent perylene imides',
Chem. Commun. 2012, 48, 4226-4228;

197. L. Flamigni, A. Zanelli, H. Langhals, B. Böck, 'Photophysical and redox properties of perylene bis- and tris- dicarboximide fluorophores with triplet state formation: Transient absorption and singlet oxygen sensitization',
J. Phys. Chem. A 2012, 116, 1503-1509; doi: 10.1021/jp210132w.

196. L. Flamigni, A. I. Ciuciu, H. Langhals, B. Böck, D. T. Gryko, 'Improving the photoinduced charge separation parameters in corrole/perylene carboximide dyads by tuning the redox and spectroscopic properties of the components',
Chem. an Asian J. 2012, 7, 582-592.

195. P. Laubichler, A. Varja, H. Langhals, K. Eibl, M. Kernt, C. Haritoglou, 'New cyanine dye for ILM staining',
Acta Ophthalmologica 2011, 89, 2317;

194. H. Langhals, 'Optische Kontrastmittel für die Unterstützung der Mikrochirurgie',
Management & Krankenhaus 9/2011, 10.

193. H. Langhals, 'FRET in orthogonalen Systemen: Neujustierung des molekularen Zollstocks',
Laborjournal 2011/6, 78-79.

192. I. Pugliesi, A. Walter, H. Langhals, E. Riedle, 'Highly efficient energy transfer in a dyad with orthogonally arranged transition dipole moments: Beyond the Limits of Förster?', in M. Chergui, D. Jonas, E. Riedle, R. W. Schoenlein, A. Taylor (eds.), Ultrafast Phenomena XVII, Oxford University Press, Inc., New York 2011, 343-345; ISBN-10: 0199768374, ISBN-13: 9780199768370.

191. H. Langhals, A. Walter, E. Rosenbaum, L. B.-Å. Johansson, 'A versatile standard for bathochromic fluorescence based on intramolecular FRET',
Phys. Chem. Chem. Phys. 2011, 13, 11055-11059.

190. J. Schütte, R. Bechstein, P. Rahe, H. Langhals, M. Rohlfing, A. Kühnle, 'Single-molecule switching with non-contact atomic force microscopy',
Nanotechnol. 2011, 22, 245701, DOI: 10.1088/0957-4484/22/24/245701.

189. H. Langhals, A. Varja, P. Laubichler, M. Kernt, K. Eibl, C. Haritoglou, 'Cyanine dyes as optical contrast agents for opthalmological surgery',
J. Med. Chem. 2011, 54, 3903-3925;

188. H. Langhals, T. Pust, 'Lipophilic optical supramolecular nano devices in the aqueous phase',
Green and Sustainable Chem. 2011, 1, 1-6.

187. S. Zimdars, H. Langhals, P. Knochel, 'Functionalization of the benzo[c][1,2,5]thiadiazole scaffold via Mg-, Zn- and Mn-intermediates',
Synthesis 2011, 1302-1308.

186. H. Langhals, Die Farben des Mittelalters aus der Sicht des Naturwissenschaftlers, in I. Bennewitz, A. Schindler (eds.), K. Hanauska, P. Hinkelmanns, B. Becker (co-eds.), Farbe im Mittelalter. Materialität - Medialität - Semantik, Akademie Verlag, Berlin 2011, ISBN 978-3-05-004640-2.

185. H. Langhals, A. Hofer, S. Bernhard, J. S. Siegel, P. Mayer, 'Axially chiral bichromophoric fluorescent dyes',
J. Org. Chem. 2011, 76, 990-992.

184. H. Langhals, S. Kinzel, 'Thermochromism of perylenes: Dynamics in aromatics ',
Spectrochim. Acta A 2011, 78, 1212-1214.

183. J. Kelber, H. Bock, O. Thiebaut, E. Grelet, H. Langhals, 'Room temperature columnar liquid crystalline perylene imido-diesters via a homogeneous one-pot imidification-esterification of perylene 3,4,9,10-tetracarboxylic anhydride',
Eur. J. Org. Chem. 2011, 702-712.

182. H. Langhals, A. J. Esterbauer, A. Walter, E. Riedle, I. Pugliesi, 'Förster resonant energy transfer in orthogonally arranged chromophores',
J. Am. Chem. Soc. 2010, 132, 16777-16782;

181. H. Langhals, S. Kinzel, 'Laterally extended naphthalene tetracarboxylic bisimides',
J. Org. Chem. 2010, 75, 7781-7784.

180. L. Flamigni, B. Ventura, A. Barbieri, H. Langhals, F. Wetzel, K. Fuchs, A. Walter, 'On/Off switching of the perylene tetracarboxylic bisimide luminescence by means of substitution at the N position by electron rich mono-, di- and tri-methoxybenzenes',
Chem. Eur. J. 2010, 16, 13406-13416.

179. H. Langhals, 'Fluoreszenz-Immunoliposomen. Nano-Leuchtballons',
Laborjournal 2010/10, 92-93.

178. H. Langhals, Tim Pust, 'Fluorescent nano particles in the aqueous phase by polymer analogous reaction of polyvinyl alcohol',
Spectrochim. Acta A 2010, 77, 541-544.

177. H. Langhals, T. Pust, 'Axially extended perylene dyes',
Eur. J. Org. Chem. 2010, 3140-3145.

176. H. Langhals, T. Pust, 'Fluorescent nano pH indicators based on supramolecular interactions',
Z. Naturforsch. 2010, 65b, 291-294.

175. H. Langhals, 'The color of the terracotta warriors: A problem for chemistry',
Nachr. Chem. Tech. Lab. 2009, 57, 1079-1084; Chem. Abstr. 2010, 152, 118912.

174. H. Langhals, A. Obermeier, Y. Floredo, A. Zanelli, L. Flamigni, 'Light-driven charge separation in isoxazolidines- perylene bisimide dyads',
Chem. Eur. J. 2009, 15, 12733-12744.

173. H. Langhals, A. J. Esterbauer, S. Kinzel, 'Red shining silica: Macroscopic pigments and nanoparticles by silylation',
New J. Chem. 2009, 33, 1829-1832.

172. H. Langhals, A. J. Esterbauer, 'Fluorescent silica nano particles by silylation',
Chem. Eur. J. 2009, 15, 4793-4796.

171. J. Schütte, R. Bechstein, P. Rahe, M. Rohlfing, A. Kühnle, H. Langhals, 'Imaging perylene derivatives on rutile TiO2(110) by noncontact atomic force microscopy',
Phys. Rev. B 2009, 79, 045428/1-045428/8.

170. H. Langhals, C. Haritoglou, 'Chemical and spectroscopic aspects of the application of dyes in vitreoretinal surgery',
Der Ophthalmologe 2009, 106, 16-20;

169. J. T. Thompson, C. Haritoglou, A. Kampik, H. Langhals, 'Indocyanine Green should not be used to facilitate removal of the internal limiting membrane in macular hole surgery',
Survey Ophthalmol. 2009, 54, 135-138, 138-141;

168. M. Tasior, D. T. Gryko, Jing Shen, K. M. Kadish, T. Becherer, H. Langhals, B. Ventura, L. Flamigni, 'Energy- and electron-transfer processes in corrole-perylenebisimide-diphenylacetylene array',
J. Phys. Chem. C 2008, 112, 19699-19709.

167. H. Langhals, A. Obermeier, 'Click-reaction for fluorescent labelling. Application of the 1,3-dipolar cycloaddition',
Eur. J. Org. Chem. 2008, 6144-6151.

166. H. Langhals, S. Poxleitner, O. Krotz, T. Pust, A. Walter, 'FRET in orthogonally arranged chromophores',
Eur. J. Org. Chem. 2008, 4559-4562.

165. H. Langhals, B. Oginski, 'Electron beam curing with glycerol methacrylate',
J. Polymer Sc. Part A: Polymer Chemistry 2008, 46, 6660-6663.

164. H. Langhals, Molecular devices. Chiral, bichromophoric silicones: Ordering principles in complex molecules in F. Ganachaud, S. Boileau, B. Boury (eds.), Silicon Based Polymers, p. 51-63, Springer, 2008, ISBN 978-1-4020-8527-7, e-ISBN 978-1-4020-8528-4.

163. C. Haritoglou, T. Kreutzer, R. Tadayoni, H. Langhals, C. A. May, S. Thaler, A. Kampik, 'Staining and peeling of the internal limiting membrane using a fluorescent dye (Rhodamine 6 G)',
Br. J. Ophthalmol. 2008, 92, 1265-1268;

162. H. Langhals, U. Ritter, 'γ-(Hydroxyalkyl)naphthalene-tetracarboxdiimides: Organic white pigments',
Eur. J. Org. Chem. 2008, 3912-3915.

161. H. Langhals, G. Schönmann, K. Polborn, 'Anthracene carboxyimides and their dimers',
Chem. Eur. J. 2008, 14, 5290-5303.

160. H. Langhals, S. Poxleitner, 'Core-extended terrylene bisimides - novel, strongly red fluorescent broadband absorbers',
Eur. J. Org. Chem. 2008, 797-800.

159. H. Langhals, M. Rauscher, J. Strübe, D. Kuck, 'Three orthogonal chromophores operating independently within the same molecule',
J. Org. Chem. 2008, 73, 1113-1116.

158. L. Flamigni, B. Ventura, M. Tasior, T. Becherer, H. Langhals, D. T. Gryko, 'New and efficient arrays for photoinduced charge separation based on perylene bisimide and corroles',
Chem. Eur. J. 2008, 14, 169-183.

157. H. Langhals, 'Brightly shining nano particles: Lipophilic perylene bisimides in aqueous phase',
New. J. Chem. 2008, 32, 21-23.

156. H. Langhals, T. Becherer, J. Lindner, A. Obermeier, 'The fluorescence labelling of primary amines with perylene bisimides',
Eur. J. Org. Chem. 2007, 4328-4336.

155. H. Langhals, O. Krotz, 'Chiral, bichromophoric silicones: Ordering principles of structual units in complex molecules',
Angew. Chem. 2006, 118, 4555-4561; Angew. Chem. Int. Ed. Engl. 2006, 45, 4444-4447.

154. H. Langhals, R. El-Shishtawy, P. von Unold, M. Rauscher, 'Methoxyperylene bisimides and perylene lactame imides: Novel, red fluorescent dyes',
Chem. Eur. J. 2006, 12, 4642-4645; DOI: 10.1002/chem.200501439.

153. H. Langhals, K. Fuchs, 'Fluorescent labels for aldehydes',
Coll. Czech. Chem. Commun. 2006, 71, 625-634.

152. H. Langhals, H. Jaschke, 'Naphthalene amidine imide dyes by transamination of naphthalene bisimides',
Chem. Eur. J. 2006, 12, 2815-2824.

151. H. Langhals, J. Gold, 'An Unusual β-Oxidation of N-functionalized alkyl chains by imidazole',
Helv. Chim. Acta 2005, 88, 2832-2836.

150. H. Langhals, H. Jaschke, H. Bastani-Oskoui, M. Speckbacher, 'Perylene dyes with high resistance to alkali',
Eur. J. Org. Chem. 2005, 4313-4321.

149. H. Langhals, 'Control of the interactions in multichromophores: Novel concepts. Perylene bisimides as components for larger functional units',
Helv. Chim. Acta 2005, 88, 1309-1343;

148. H. Langhals, O. Krotz, K. Polborn, P. Mayer, 'A novel fluorescent dye with strong, anisotropic solid-state fluorescence, small Stokes' shift and high photostability – novel realizations for cooling with light',
Angew. Chem. 2005, 117, 2479-2480; Angew. Chem. Int. Ed. Engl. 2005, 44, 2427-2428.

147. H. Langhals, D. Bathelt, S. Bucher, 'Das Grabmal des ersten chinesischen Kaisers Qin Shihuangdi: ein ungewöhnlich großer archäologischer Fund und seine chemische und konservatorische Herausforderung',
Chemie in unserer Zeit 2005, 39, 196-211; Chem. Abstr. 2005, 143, 172244.

146. H. Langhals, J. Büttner, P. Blanke, 'A two-step synthesis for quarterrylene bisimides. Application of the "green route" method',
Synthesis, 2005, 364-366.

145. H. Langhals, 'Chromophore als Basis für zukünftige Technologien. Neue Strukturen, neue Anwendungen, neue Prespektiven' in EWG Bitterfeld-Wolfen, Prof. Dr. E. Fanghänel, ed., Innovationsforum und Kontaktbörse. Fein- und Spezialchemikaliensynthese für Wirkstoffe und HighTech-Produkte, p. 229-272, printLein GmbH, Bitterfeld 2004, ISBN 3-00-015516-3.

144. H. Langhals, 'Novel Chromophores with novel applications and their interaction in multichromophoric systems',
1st International Conference of Textile Research Division NCR, Cairo, Egypt, March 2-4, 2004, 58-64; ISSN 1687-2126.

143. H. Langhals, K. Fuchs, 'Chemie am Strand - Sonnenstrahlung, Hautreaktionen und Sonnenschutz',
Chemie in unserer Zeit 2004, 38, 98-112;; Chem. Abstr. 2004, 141, 42490.

142. H. Langhals, D. Bathelt, 'The restoration of the largest archaeological discovery - a chemical problem: Conservation of the polychromy of the chinese Terracotta Army in Lintong',
Angew. Chem. 2003, 115, 5854-5859; Angew. Chem. Int. Ed. Engl. 2003, 42, 5676-5681.

141. H. Langhals, 'An unexpectedly simple NIR dye for 1.1 µm with a central mesoionic structure',
Angew. Chem. 2003, 115, 4422-4424; Angew. Chem. Int. Ed. Engl. 2003, 42, 4286-4288.

140. H. Langhals, S. Saulich, 'Chromophores as elements of structure for pico technology optical computers',
Z. Naturforsch. 2003, 58b, 695-697.

139. H. Langhals, P. Blanke, 'An approach to novel NIR dyes utilising α-effect donor groups',
Dyes Pigm. 2003, 59, 109-116.

138. J. Bauer, P. Behrens, M. Speckbacher, H. Langhals, 'Composites of perylene chromophores and layered double hydroxides: Direct synthesis, characterization, photo- and chemical stability',
Adv. Funct. Mater. 2003, 13, 241-248.

137. H. Langhals, 'Novel chromophores with novel applications and their interaction in multichromophoric systems',
Adv. in Color Science and Technol. 2002, 5, 122-124; Chem. Abstr. 2003, 138, 254616.

136. H. Langhals, S. Saulich, 'Bichromophoric perylene derivatives: Energy transfer from non fluorescent chromophores',
Chem. Eur. J. 2002, 8, 5630-5643.

135. I. Renge, C. G. Hubner, A. Renn, H. Langhals, U. P. Wild, 'Slow photochemical transformations of single dye molecules in polymer environment at room temperature',
J. Lumines. 2002, 98, 91-96.

134. H. Langhals, 'The rapid identification of organic colorants by UV/Vis-spectroscopy',
Anal. Bioanal. Chem. 2002, 374, 573-578.

133. I.-P. Lorenz, M. Limmert, P. Mayer, H. Piotrowski, H. Langhals, M. Poppe and K. Polborn, 'DPP dyes as ligands in copper, silver, and gold complexes',
Chem. Eur. J. 2002, 8, 4047-4055.

132. H. Langhals, 'UV-Visible spectroscopy and the potential of fluorescent probes' in F. H. Frimmel, Refractory Organic Substances in the Environment, p. 200-214, Wiley-VCH, Weinheim 2002, ISBN 3-527-30173-9.

131. I. Rogner, H. Langhals, Zhou Tie, Zhang Zhijun, Rong Bo, C. Blänsdorf, C. Herm, 'Consolidation and preservation of the polychrome qi-lacquer layers of the terracotta army of Quin Shihuang by treatment with methacrylic monomers and electron beam curing' in The terracotta army of the first chinese emperor Quin Shihuang, Arbeitshefte des Bayerischen Landesamtes für Denkmalpflege, 2001, 83, 594-617; ISBN 3-87490-711-2.

130. H. Langhals, C. Wagner, R. Ismael, 'Star-like oriented chromophores',
New. Journ. Chem. 2001, 25, 1047-1049.

129. H. Langhals, M. Speckbacher, 'Intramolecular effects in covalently connected units: Ring-type oriented chromophores and their interactions',
Eur. J. Org. Chem. 2001, 2481-2486.

128. F. Süßmeier, H. Langhals, 'Novel fluorescence labels: The synthesis of perylene-3:4,9-tricarboxylic imides',
Eur. J. Org. Chem. 2001, 607-610.

127. S. Kalinin, M. Speckbacher, H. Langhals, L. B.-Å. Johansson, 'A new and versatile fluorescence standard for quantum yield determination',
Phys. Chem. Chem. Phys. 2001, 3, 172-174.

126. H. Langhals, G. Abbt-Braun, F. H. Frimmel, 'Association of humic substances: Verification of Lambert-Beers law',
Acta hydrochim. et hydrobiol. 2000, 28, 329-332.

125. H. Langhals, M. Limmert, I.-P. Lorenz, P. Mayer, H. Piotrowski, K. Polborn, 'Chromophores encapsulated in gold complexes: DPP Dyes with Novel Properties',
Eur. J. Inorg. Chem. 2000, 2345-2349.

124. H. Langhals, R. Ismael, O. Yürük, 'Persistent fluorescence of perylene dyes by steric inhibition of aggregation',
Tetrahedron 2000, 56, 5435-5441.

123. H. Langhals, 'A Re-examination of the line-shape of the electronic spectra of complex molecules in solution. Log-normal function versus Gaussian',
Spectrochim. Acta Part A 2000, 56, 2207-2210.

122. H. Langhals, H. Jaschke, P. von Unold, U. Ring, 'Matched dyes for information recording',
J. Inform. Recording 2000, 25, 195-110; Chem. Abstr. 2001, 134, 244847.

121. G. J. Mohr, U. E. Spichiger, W. Jona, H. Langhals, 'Using N-aminoperylene-3,4:9,10-tetracarboxyl-bisimide as a fluorogenic reactand in the optical sensing of aqueous propionaldehyde',
Anal. Chem. 2000, 72, 1084-1087.

120. H. Langhals, S. Kirner, 'Novel fluorescent dyes by the extension of the core of perylene-tetracarboxylic bisimides',
Eur. J. Org. Chem. 2000, 365-380.

119. F. Einsiedl, H. Langhals, P. Maloszewski, K. Witthuser, S. Wohnlich, 'Application of two new fluorescent dyes and fluorescent particles in a horizontal and vertical fracture'
IAHS Publ. (Tracers and Modelling in Hydrogeology) 2000, 262, 175-179; Chem Abstr. 2000, 133, 240814.

118. E. Schmälzlin, U. Bitterer, H. Langhals, C. Bräuchle, K. Meerholz, 'Determination of the first hyperpolarizability of multiphoton fluorescent nonlinear optical chromophores via hyper-Rayleigh Scattering Using Fluorescence Quenching',
Chem. Phys. 1999, 245, 73-78.

117. H. Langhals, F. Süßmeier, 'Bichromophoric perylene-3,4-dicarboxylic imides: Highly intense and light-fast fluorescent dyes',
J. Prakt. Chem. 1999, 341, 309-311.

116. I. Rogner, H. Langhals, 'Fixation of the colored and humid Qi-lacqer layer of the Chinese Terracotta Warriors by electon-beam curing of methacrylic monomers',
ARC-Nucléat, Grenoble 1999, 294-298.

115. I. Rogner, H. Langhals, 'The fixation of natural Qi-Lac on silicate surfaces by electron-beam induced polymerization',
J. Macromol. Chem., Notes part 1999, A36, 461-469.

114. H. Langhals, R. Ismael, K. Polborn, 'Crystal structures of N,N'-dimethyl-N''-(1-methylpropyl)naphthalene-1:4,5-tricarboxylic-4,5-imide-1,8-hydrazame, C19H19N3O3 and of N,N'-dimethyl-N''-(1-hexylheptyl)naphthalene-1:4,5-tricarboxylic-4,5-imide-1,8-hydrazame, C28H37N3O3, two naphthalene hydrazamimides',
Zeitschr. Krist. 1999, 214, 35-37.

113. H. Langhals, H. Jaschke, U. Ring, P. von Unold, 'Imidazolo perylene imides: A highly fluorescent and stable replacement of terrylene',
Angew. Chem. 1999, 111, 143-145; Angew. Chem. Int. Ed. Engl. 1999, 38, 201-203.

112. F. Einsiedl, S. Wohnlich, H. Langhals, D. Klotz, 'The Use of N,N'-bis(phenyl-3,5-disulphonic-acid)-perylene-3,4:9,10-bis(dicarboximide) as a hydrogeological tracer' in J. van Brahma, Y. Eckstein, L. K. Ongley, R. Schneider and J. E. Moore (eds.): Gambling with groundwater - physical, chemical, and biological aspects of aquifer-stream relations, proceedings volume of the joint conference of the International Association of Hydrogeologists and the American Institute of Hydrogeology, Las Vegas, Nevada U.S.A., 28.9.1998 - 2.10.1998, 1998, 555-560; LCCC 98-073291.

111. H. Langhals, W. Jona, F. Einsiedl, S. Wohnlich, 'Self-dispersion: Spontaneous formation of colloidal dyes in water',
Adv. Mater. 1998, 10, 1022-1024.

110. H. Langhals, J. Karolin, L. B.-Å. Johansson, 'Spectroscopic properties of new and convenient standards for measuring fluorescence quantum yields',
J. Chem. Soc., Faraday Trans. 1998, 94, 2919-2922.

109. H. Langhals, R. Ismael, 'Cyclophanes as model compounds for permanent, dynamic aggregates - induced chirality with strong CD effects',
Eur. J. Org. Chem. 1998, 1915-1917.

108. H. Langhals, W. Jona, 'Identification of carbonyle compounds by fluorescence: A novel carbonyl derivating reagent',
Chem. Eur. J. 1998, 4, 2110-2116.

107. H. Langhals, 'Novel dyes for electrophotographic processes with the perylene sructure element', Proceedings of 'The 3rd International Conference on Imaging Science and Hardcopy' (ICISH'98) 1998, 43-46.

106. H. Langhals, W. Jona, 'The Synthesis of Perylenebisimide Monocarboxylic Acids',
Eur. J. Org. Chem. 1998, 847-851.

105. H. Langhals, W. Jona, 'Intense dyes through chromophore-chromophore interactions: Bi- and trichromophoric perylene-3,4:9,10-bis(dicarboximide)s',
Angew. Chem. 1998, 110, 998-1001; Angew. Chem. Int. Ed. Engl. 1998, 37, 952-955.

104. H. Langhals, P. von Unold, 'Arylimide-lactam-ring-contractions - a novel type of rearrangements',
GIT Fachz. Lab. 1997, 41, 974-978; Chem. Abstr. 1997, 127, 331413n.

103. H. Langhals, J. Gold, 'Chiral bifluorophoric perylene dyes with unusually high CD effects - a simple model for the photosynthesis reaction center',
Liebigs Ann./Recueil 1997, 1151-1153.

102. H. Langhals, P. von Unold, M. Speckbacher, 'Balanced decarboxylation of aromatic polyacids - a one-step synthesis of perylene-3,4-dicarboxylic anhydride',
Liebigs Ann./Recueil 1997, 467-468.

101. H. Langhals, H. Bastani-Oskoui, 'Synthesis of readily doluble tetraazaviolanthrone and -isoviolanthrone fluorescent dyes',
J. Prakt. Chem. 1997, 339, 597-602.

100. U. Ring, H. Langhals, 'Simulations for the agening of the ground coating for the polychromic painting of the Terra-cotta Warriors of the first emperor of china', in Museum of the Terra-cotta Warroirs of the Emperor Qin Shi-Huang, A Research in the Studies of the Terra-cotta Warroirs in the Mausoleum of the Emperor Qin Shi-Huang, p. 1302-1308, Publisher for People's Education, Xi'an (China) 1996, ISBN 7-5419-6242-2.

99. L. B.-Å. Johansson, L. Persson, H. Langhals, 'Conspicuous absorption and fluorescence spectroscopic properties of 3,3'-dihydroxy-2,2'-bipyridines in solution',
J. Chem. Soc., Faraday Trans. 1996, 92, 4909-4911.

98. J. Karolin, L. B.-Å. Johansson, U. Ring, H. Langhals, 'Aggregation of perylene dyes in lipid vesicles: the effect of optically active substituents',
Spectrochim. Acta A 1996, 52, 747-753.

97. H. Langhals, L. Feiler, 'Pyrrolo- and thiophenoperylenedicarboximides - highly fluorescent heterocycles',
Liebigs Ann. 1996, 1587-1591.

96. H. Langhals, J. Gold, 'Tangentially coupled π systems and their through-space interaction - trichromophoric perylene dyes',
J. Prakt. Chem. 1996, 338, 654-659.

95. H. Langhals, B. Wagner, 'Oxindigo: Colour deepening, strong fluorescence and large Stokes-Shift by donor-substitution',
Angew. Chem. 1996, 108, 1090-1093; Angew. Chem. Int. Ed. Engl. 1996, 35, 1016-1019.

94. H. Langhals, B. Wagner, K. Polborn, 'The oxydative coupling of coumaranone with disulfurbichloride',
Tetrahedron 1996, 52, 1961-1964.

93. H. Langhals, G. Schönmann, L. Feiler, 'A two-step synthesis of quaterrylenetetracarboxylic bisimides - novel NIR fluorescent dyes',
Tetrahedron Lett. 1995, 36, 6423-6424.

92. H. Langhals, P. v. Unold, 'Tetracarboxylic bisimide-lactame-ring-contractions - a Novel Type of Rearrangement',
Angew. Chem. 1995, 107, 2436-2439; Angew. Chem., Int. Ed. Engl. 1995, 34, 2234-2236.

91. H. Langhals, 'Novel dyes for electrophotographic processes with the perylene structure element', 10th IS&T's Int. Congr. Adv. Non-Impact Print. Technol., IS&T-The Society for Imaging Science and Technology, Springfield, Va., 1994; Chem. Abstr. 1996, 124, 59054c.

90. H. Langhals, R. Kollefrath, J. Lindner, 'The determination of the molecular weights of perylene dyes by GPC',
Macromol. Rep. 1995, A32, 415-423.

89. L. Feiler, H. Langhals, K. Polborn, 'Synthesis of perylene-3,4-dicarboximides - novel, highly photostable fluorescent dyes',
Liebigs Ann. Chem. 1995, 1229-1244.

88. P. Edman, L. B.-Å. Johansson, H. Langhals, 'Polarized light spectroscopy of dihydro-pyrroledione in liquids and liquid crystals: Molecular conformation and influence by an anisotropic environment',
J. Phys. Chem. 1995, 99, 8504-8509.

87. H. Langhals, S. Sprenger, M.-T. Brandherm, 'Peryleneamidine-imide dyes',
Liebigs Ann. Chem. 1995, 481- 486.

86. T. Sander, H.-G. Loehmannsroeben, H. Langhals, 'Photophysical and fluorescence quenching properties of 1,7-diazaperylene in solution',
J. Photochem, Photobiol. A 1995, 86, 103-108.

85. H. Langhals, 'Novel perylene derivatives as highly photostable fluorescent dyes',
Chimia 1994, 48, 503-505.

84. H. Langhals, 'Cyclic carboxylic imide structures as structure elements of high stability. Novel developments in perylene dye chemistry',
Heterocycles 1995, 40, 477-500.

83. H. Langhals, 'Dyes for fluorescent immunoassays', in B. Hock, Immunochemical Detection of Pesticides and their Metabolites in the Water Cycle, VCH Verlagsgesellschaft, Weinheim 1995, ISBN 3-527-27137-6; Chem. Abstr. 1996, 124, 24966z.

82. L. B.-Å. Johansson, J. Karolin, H. Langhals, S. Reichherzer, N. von Füner, K. Polborn, 'Photophysics, molecular reorientation in solution and X-ray structure of a new fluorescent probe 1,7-diazaperylene',
J. Chem. Soc., Faraday Trans. I 1993, 89, 49-54.

81. H. Langhals, 'Mehrkernige Aromaten als Basis für hochlichtechte Fluoreszenzfarbstoffe - neuere Anwendungen', in "Herstellung und Anwendung mehrkerniger Aromaten und Heteroaromaten" DMGK-Berichte (Deutsche Wissenschaftliche Gesellschaft für Erdöl, Erdgas und Kohle e.V.) Tagungsbericht 9105, ISBN 3-928164-19-8, Hamburg 1991, p. 95-118; Chem. Abstr. 1993, 118, 23719k.

80. H. Schott, D. v. Cunov, H. Langhals, 'Labelling of liposomes with intercalating perylene fluorescent dyes',
Biochim. Biophys. Acta 1992, 1110, 151-157.

79. H. Langhals, T. Grundei, T. Potrawa, K. Polborn, 'Highly photostable organic fluorescent pigments - a simple synthesis of N-arylpyrrolopyrrolediones (DPP)',
Liebigs Ann. 1996, 679-682.

78. S. A. Tucker, W. E. Acree, Jr., M. J. Tanga, S. Tokita, K. Hiruta, H. Langhals, 'Spectroscopic properties of polycyclic aromatic compounds: examination of nitromethane as a selective fluorescence quenching agent for alternant polycyclic aromatic nitrogen hetero-atom derivatives',
Appl. Spectrosc. 1992, 46, 229-235.

77. H. Langhals, 'Erasable optical fluorescent data storage (EOFS) - a novel way for information recording',
J. Inf. Rec. Mater., Berlin 1991, 19, 449-454.

76. H. Langhals, S. Demmig, T. Potrawa, 'The relation between packing effects and solid state fluorescence of dyes',
J. Prakt. Chem. 1991, 333, 733-748.

75. L. B.-Å. Johansson, H. Langhals, 'Spectroscopic studies of perylene fluorescent dyes',
Spectrochim. Acta 1991, 47A, 857-861.

74. H. Langhals, 'Eine einfache und präzise Schnellbestimmung für Wasser in organischen Lösungsmitteln',
GIT Fachz. Lab. 1991, 7, 766-771; Chem. Abstr. 1991, 115, 269619f.

73. H. Langhals, 'A simple, quick, and precise procedure for the determination of water in organic solvents',
Anal. Lett. 1990, 23, 2243-2258.

72. R. A. Schwendener, T. Trüb, H. Schott, H. Langhals, R. F. Barth, P. Groscurth, H. Hengartner, 'Comparative studies of the preparation of immunoliposomes with the use of two bifunctional coupling agents and investigation of in vitro immunoliposome-target cell binding by cytofluorometry and electron microscopy',
Biochim. Biophys. Acta 1990, 1026, 69-79.

71. H. Kaiser, J. Lindner, H. Langhals, 'Synthese von nichtsymmetrisch substituierten Perylen-Fluoreszenzfarbstoffen',
Chem. Ber. 1991, 124, 529-535.

70. H. Langhals, 'Optische Fluoreszenz-Datenspeicher: Mehr Informationen auf engerem Raum',
Chem. Ind. (Düsseldorf) 1990, 113/6, 56-60; Chem. Abstr. 1990, 113, 122620z.

69. H. Langhals, 'Description of properties of binary solvent mixtures' in R. I. Zalewski, T. M. Krygowski, J. Shorter, Similarity Models in Organic Chemistry, Biochemistry and Related Fields. Studies in Organic Chemistry 42, Elsevier Publishers, Amsterdam 1991, p. 283 - 342; ISBN 0-444-88161-1.

68. C. Naumann, H. Langhals, 'Synthese von 1,7-Diazaperylen',
Chem. Ber. 1990, 123, 1881-1884.

67. V. Sachweh, H. Langhals, 'Synthese von Reinst-Rubicen und Rubicen-Derivaten',
Chem. Ber. 1990, 123, 1981-1987.

66. H. Langhals, K. Hadizamani, 'The relation between bridgehead reactivity and electronic effects',
New. J. Chem. 1990, 14, 279-281.

65. E. Langhals, H. Langhals, 'Alkylation of ketones by use of solid KOH in dimethyl sulfoxide',
Tetrahedron Lett. 1990, 31,859-862.

64. H. Langhals, K. Hadizamani, 'Sextettumlagerungen als Solvens-Polaritätssonde',
Chem. Ber. 1990, 123, 407-409.

63. C. Naumann, H. Langhals, 'A simple synthesis of dihydroxybipyridyls',
Synthesis 1990, 279-281.

62. H. Langhals, T. Potrawa, 'Löschbare optische Fluoreszenz-Datenspeicher',
Chimia 1990, 44, 62-67.

61. H.-G. Löhmannsröben, H. Langhals, 'Laser performance of perylenebis(dicarboximide) dyes with long secondary alkyl chains',
Appl. Phys. 1989, B48, 449-452.

60. H. Langhals, T. Potrawa, H. Nöth, G. Linti, 'Der Einfluß von Packungseffekten auf die Feststofffluoreszenz von Diketopyrrolopyrrolen',
Angew. Chem. 1989, 101, 497-499; Angew. Chem. Int. Ed. Engl. 1989, 28, 478-480.

59. J. Salbeck, H. Kunkely, H. Langhals, R. W. Saalfrank, J. Daub, 'Elektronentransfer (ET)-Verhalten von Fluoreszenzfarbstoffen - untersucht am Beispiel von Perylenbiscarboximiden und einem Dioxaindenoindendion mit Cyclovoltametrie und mit UV/VIS-Spektroelektrochemie',
Chimia 1989, 43, 6-9.

58. H. Langhals, 'Dyes with high dielectric constants',
Chem. Phys. Lett. 1988, 150, 321-324.

57. H. Langhals, S. Demmig, H. Huber, 'Rotational barriers in perylene fluorescent dyes',
Spectrochim. Acta 1988, 44A, 1189-1193.

56. H. Langhals, 'Determination of the concentration of gases by pressure measurements',
Anal. Lett. 1987, 20, 1595-1610.

55. H. Langhals, J. Fünfschilling, D. Glatz, I. Zschokke-Gränacher, 'Low temperature fluorescence spectra of atropisomeric perylene dyes',
Spectrochim. Acta 1988, 44A, 311.

54. S. Demmig, H. Langhals, 'Leichtlösliche, lichtechte Perylen-Fluoreszenzfarbstoffe',
Chem. Ber. 1988, 121, 225-230.

53. E. M. Ebeid, S. A. El-Daly, H. Langhals, 'Emission Characteristics and photostability of N,N'-bis-(2,5-di-tert-butylphenyl)-3,4:9,10-perylenebis(dicarboximide)',
J. Phys. Chem. 1988, 92, 4565-4568.

52. T. Potrawa, H. Langhals, 'Fluoreszenzfarbstoffe mit großen Stokes-Shifts - lösliche Dihydropyrrolopyrroldione',
Chem. Ber. 1987, 120, 1075-1078.

51. H. Langhals, 'The polarity of solutions of electrolytes',
Tetrahedron 1987, 43, 1771-1774.

50. H. Langhals, S. Grundner, 'Fluoreszenzfarbstoffe mit Fünfring-Carbonsäureimid-Strukturen',
Chem. Ber. 1986, 119, 2373-2376.

49. V. Sachweh, H. Langhals, 'Substituentenkonstanten des Pyrazol-, 1,2,3-Triazol-, Benzotriazol- und Naphthotriazol-Restes',
Chem. Ber. 1986, 119, 1627-1639.

48. H. Langhals, 'Polarity of liquid mixtures with components of limited miscibility',
Tetrahedron Lett. 1986, 27, 339-342.

47. H. Langhals, 'Polarität von Flüssigkeitsgemischen mit begrenzt mischbaren Komponenten',
Z. Phys. Chem. 1987, 268, 91-96.

46. H. Langhals, 'Hochempfindliches analytisches Nachweisverfahren auf der Basis der Fluoreszenz durch Laser-Anregung',
Chem. Ind. (Düsseldorf) 1985, 37, 470-472.

45. H. Langhals, 'Synthese von hochreinen Perylen-Fluoreszenzfarbstoffen in großen Mengen - gezielte Darstellung von Atrop-Isomeren',
Chem. Ber. 1985, 118, 4641-4645.

44. H. Langhals, S. Pust, 'Fluoreszenzfarbstoffe mit großen Stokes-Shifts - eine einfache Synthese von (2,2'-Bipyridin)-3,3'-diol',
Chem. Ber. 1985, 118, 4674-4681.

43. C. Aubert, J. Fünfschilling, I. Zschokke-Gränacher, H. Langhals, 'Hochempfindliches Nachweisverfahren auf der Basis der Fluorescenz durch Laser-Anregung',
Zeitschr. Analyt. Chem. 1985, 320, 361-364.

42. H. Langhals, 'Vereinfachung der Analyse binärer Flüssigkeitsgemische unter Verwendung des Brechungsindex oder der Dichte',
Zeitschr. Analyt. Chem. 1984, 319, 293-295.

41. K. Fritzsche, H. Langhals, 'Elektronenreiche Heterocyclen als Donorgruppen in Fluoreszenzfarbstoffen',
Chem. Ber. 1984, 117, 2275-2286.

40. H. Langhals, 'Der Zusammenhang zwischen dem Brechungsindex und der Zusammensetzung binärer Flüssigkeitsgemische',
Z. Phys. Chem. 1985, 266, 775-780.
English translation: The relationship between the refractive index and the composition of binary liquid mixtures.

39. E. Langhals, H. Langhals, C. Rüchardt, 'Eine einfache Synthese der 5-Cyan-2-pyridincarbonsäure und ihres Amids',
Chem. Ber. 1984, 117, 1259-1261.

38. E. Langhals, H. Langhals, C. Rüchardt, 'Der Nachweis eines Radikalketten-Mechanismus für die KNABE-Reaktion von 1,2-Dihydro-2-methyl-papaverin',
Chem. Ber. 1984, 117, 1436-1454.

37. I. Lukac, H. Langhals, 'Darstellung und Fluoreszenzverhalten von 2,3,4,4a,10a,11,12,13,-Octahydro-1,4a,10a,14-tetraazaviolanthron-Derivaten',
Chem. Ber. 1983, 116, 3524-3528.

36. C. Finkentey, E. Langhals, H. Langhals, 'Eine einfache Synthese von 3-Methoxypyridin und seinen Analogen durch Alkylierungsreaktionen',
Chem. Ber. 1983, 116, 2394-2397.

35. E. Langhals, H. Langhals, C. Rüchardt, 'Eine Synthese von Nornikotin- und Nikotin-2-carboxamid',
Liebigs Ann. Chem. 1983, 330-333.

34. H. Langhals, M. Julia, D. Uguen, 'Eine einfache Synthese von α-Styrylenolethern und Arylacetaldehyden aus Benzylalkoholen',
Liebigs Ann. Chem. 1982, 2216-2222.

33. G. Baur, A. Götzberger, A. Heidler, H. Langhals, E. Sah, V. Wittwer, A. Zastrow, 'Solar energy conversion on the basis of fluorescent collectors', Forschungsber. - Bundesminist. Forsch. Technol., Technol. Forsch. Entwickl. (1982), BMFT-FB-T 82-081, ISSN: 0340-7608; Chem. Abstr. 1982, 97, 200752m.

32. I. Mergelsberg, H. Langhals, C. Rüchardt, 'Nachweis von 4-Homocubyl-Carbenium-Ionen als reaktive Zwischenstufen',
Chem. Ber. 1983, 116, 360-366.

31. H. Langhals, 'Polarität binärer Flüssigkeitsgemische',
Angew. Chem. 1982, 94, 739-749; Angew. Chem. Int. Ed. Engl. 1982, 21, 724-733.

30. A. Rademacher, S. Märkle, H. Langhals, 'Lösliche Perylen-Fluoreszenzfarbstoffe mit hoher Photostabilität',
Chem. Ber. 1982, 115, 2927-2934.

29. H. Langhals, 'Empirische Polaritätsskalen und binäre Solvens-Gemische',
Nouv. Journ. Chim. 1982, 6, 285-286.

28a. H. Langhals, 'Polarität von organischen Gläsern',
Angew. Chem. 1982, 94, 452-453; Angew. Chem. Int. Ed. Engl. 1982, 21, 432-433.

28b. H. Langhals, 'Polarität von organischen Gläsern',
Angew. Chem. Suppl. 1982, 1138-1143.

27. E. Langhals, H. Langhals, C. Rüchardt, 'Eine einfache neue Synthese der Fusarinsäure und anderer 5-Alkyl-2-pyridincarbonsäuren',
Liebigs Ann. Chem. 1982, 930-949.

26. H. Langhals, I. Mergelsberg, C. Rüchardt, U. Burger, 'Die Isomerisierung der Homoadamantan-3-carbonsäure zur Homoadamantan-1-carbonsäure',
Chem. Ber. 1982, 115, 1509-1524.

25. H. Langhals, 'Die Beschreibung der Polarität von Alkoholen als Funktion ihres molaren Gehalts an OH-Gruppen',
Nouv. Journ. Chim. 1982, 6, 265-267.
English translation: The description of the polarity of alcohols as a function of their molar content of OH groups.

24. H. Langhals, 'Bestimmung der Zusammensetzung binärer Flüssigkeitsgemische mit Hilfe von Fluoreszenzmessungen',
Zeitschr. Analyt. Chem. 1982, 310, 427-428.

23. H. Langhals, 'Untersuchung des Lösungsmitteleinflusses auf Absorption und Emission bei Fluoreszenzfarbstoffen',
Z. Phys. Chem. (Wiesbaden) 1981, 127, 45-53.

22. H. Langhals, 'Ungewöhnliches Polaritätsverhalten binärer Flüssigkeitsgemische',
Nouv. Journ. Chim. 1981, 5, 511-514.
English translation: Unusual polarity behaviour of binary liquid mixtures.

21. H. Langhals, 'Ein neues, unkompliziertes Verfahren zur Bestimmung der Zusammensetzung binärer Flüssigkeitsgemische',
Zeitschr. Analyt. Chem. 1981, 308, 441-444.

20. H. Langhals, C. Rüchardt, 'Wanderungstendenzen cyclischer, polycyclischer und methylverzweigter Alkylreste bei der Beckmann-Umlagerung',
Chem. Ber. 1981, 114, 3831-3854.

19. H. Langhals, G. Range, E. Wistuba, C. Rüchardt, 'Alkylwanderungen bei Sextettumlagerungen',
Chem. Ber. 1981, 114, 3813-3830.

18. H. Langhals, I. Mergelsberg, C. Rüchardt, 'Synthesis of 13C=O-labelled Tertiary Alcanoic Acids by the Koch-Haaf-Reaction',
Tetrahedron Lett. 1981, 22, 2365-2366.

17. H. Langhals, 'Die quantitative Beschreibung der Lösungsmittelpolarität binärer Gemische unter Berücksichtigung verschiedener Polaritätsskalen',
Chem. Ber. 1981, 114, 2907-2913.

16. K. Peters, H. Langhals, G. Werner, '5,13-DI-TERT-BUTYL-RUBICENE, C34H30',
Cryst. Structure Commun. 1981, 10, 713-717.

15. H. Langhals, 'Eine quantitative Beschreibung der Solvatochromie in binären Flüssigkeitsgemischen',
Nouv. Journ. Chim. 1981, 5, 97-99.

14. H. Langhals, 'Farbstoffe für Fluoreszenz-Solarkollektoren',
Nachr. Chem. Tech. Lab. 1980, 28, 716-718, Chem. Abstr. 1981, 95, R9816q.
English translation: Dyes for Fluorescent Solar Collectors.

13. E. Fritz, H. Langhals, C. Rüchardt, 'Eine einfache Synthese von Tetramethyloxamid',
Liebigs Ann. Chem. 1981, 1015-1017.

12. H. Langhals, 'Ein neues, unkompliziert auszuführendes Verfahren zur Bestimmung kleiner Konzentrationen an Wasser in organischen Lösungsmitteln',
Zeitschr. Analyt. Chem. 1981, 305, 26-28.

11. H. Langhals, E. Fritz, I. Mergelsberg, 'Die Trocknung von tert-Butylhydroperoxid nach einem einfachen, erstmals gefahrlosen Verfahren',
Chem. Ber. 1980, 113, 3662-3665.

10. R. Winkler, H. Langhals, 'Über das ungewöhnliche Schmelzverhalten von Mischungen aus Homoadamantan-1- und -3-carbonsäure',
Chem. Ber. 1980, 113, 3381-3383.

9. I. Mergelsberg, H. Langhals, C. Rüchardt, 'Der Einfluß der Substrat-Micellisierung auf die Geschwindigkeit der Solvolyse von 1-Methylheptyl-methansulfonat, in Dioxan-Wasser',
Chem. Ber. 1980, 113, 2424-2429.

8. H. Langhals, 'Bestimmung der Überlappung zwischen UV-Absorptionsspektrum und Fluoreszenzspektrum',
Ber. Bunsenges. Phys. Chem. 1979, 83, 730-732.
English translation: Determination of the Overlap Between UV Absorption Spectrum and Fluorescence Spectrum.

7. H. Langhals, H. Fischer, 'Die Bildung von Semibenzolen bei der Dimerisierung von Benzyl-Radikalen',
Chem. Ber. 1978, 111, 543-553.

6. V. Golzke, H. Langhals, C. Rüchardt, 'Bicyclo[3.2.2]nonan- und Bicyclo[3.3.2]decan-1-carbonsäure',
Synthesis 1977, 675-676.

5. M. Julia, H. Langhals, B. Mansour, D. Mansuy, P. Mattei, 'Réactions de substitution des sels d'alkoxy-4-pyridinium',
Tetrahedron Lett. 1976, 38, 3439-3442.

4. H. Langhals, M. Julia, D. Mansuy, 'Transformation aisée d'alcools benzyliques en aldehydes arylacetiques',
Tetrahedron Lett. 1976, 39, 3519-3522.

3. H. Langhals, C. Rüchardt, 'Notiz zur präparativen Decarboxylierung von Carbonsäuren durch Peresterthermolyse',
Chem. Ber. 1975, 108, 2156-2158.

2. Nguyen-Tran-Giac, H. Langhals, C. Rüchardt, 'Notiz zur verbesserten Synthese und zur Thermochemie von cis- und trans-9-Decalincarbonsäure',
Chem. Ber. 1975, 108, 370-371.

1. H. Langhals, C. Rüchardt, 'Gezielte Synthese von Homoadamantan-1- oder -3-carbonsäure durch Koch-Haaf-Synthese',
Chem. Ber. 1974, 107, 1245-1256.



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