English Intern
    THE LEHMANN GROUP: ORGANIC SOFT MATERIALS AND LIQUID CRYSTALS
    2017
    083 To be or not to be - nematic liquid crystals from shape-persistent V-shaped nematogens with the 'magic angle', Stefan Maisch, Ana-Maria Krause, David Schmidt, Matthias Lehmann, Liquid Crystals 2017, online issue. DOI: 10.1080/02678292.2017.1369595
    082 Mesogenic origami - four armed, star-shaped mesogens as precursors for functional liquid crystal materials, Sabine Roth, Matthias Lehmann, Liquid Crystals 2017, online issue. DOI: 10.1080/02678292.2017.1346209
    081 Crowded Star Mesogens: Guest-Controlled Stability of Mesophases from Unconventional Liquid-Crystal Molecules, Matthias Lehmann, Philipp Maier, Matthias Grüne, Markus Hügel, Chem. Eur. J. 2017, 23, 1060-1068. DOI: 10.1002/chem.201603611
    080 A Star-shaped Oligo(phenylenevinylene) Liquid Crystal Host with an Anthracene Guest - A Double Nanosegregating Supermesogen, P. Maier, M. Grüne, M. Lehmann, Chem. Eur. J. 2017, 23, 1018-1022. DOI: 10.1002/chem.201604505
    2015
    079 Solid State Assisted Synthesis of Oligobenzoates, Matthias Lehmann, Katrin Bahndorf, Michael Ohnemus, Sabine Roth and Steffi Gloza, Liquid Crystals 2015, 42, 1444-1449. DOI: 10.1080/02678292.2015.1056264
    078 At the Limits of Liquid Crystallinity: Stimuli Responsive 3D Columnar Liquid Crystals and Soft Crystals of Supramolecular Anthracene Mesogens, Matthias Lehmann, Steffi Gloza and Sabine Roth, Chem. Mater. 2015, 27, 8181–8184. DOI: 10.1021/acs.chemmater.5b03382
    077 A Perfect Match: Fullerene Guests in Star-shaped Oligophenylenevinylene Mesogens, Matthias Lehmann, Markus Hügel, Angew. Chem. Int. Ed. 2015, 54, 4110-4114 (International Edition). German Edition: Angew. Chem. Int. Ed. 2015, 54, 4183-4187. DOI: 10.1002/anie.201410662. and DOI: 10.1002/ange.20141066
    076 Shape-persistent, Terically Crowded Star Mesogens: From Exceptional Columnar Dimer Stacks to Supermesogens, Matthias Lehmann and Philipp Maier, Angew. Chem. Int. Ed. 2015, 54, 1-6 (International Edition). German Edition: Angew. Chem. Int. Ed. 2015, 127, 1-6. DOI: 10.1002/anie.201501988 and DOI: 10.1002/ange.201501988.
    075 Low Molar Mass, Thermotropic Systems" in Biaxial Nematic Liquid Crystals: Theory, Simulations and Experiment", Chapter 14, p. 333-367 (Ed. G. R. Luckhurst, T. J. Sluckin), John Wiley & Sons, Chichester 2015.
    074 Trendbericht Organische Chemie 2014, B. Straub (Coordinator) et al., Nachrichten aus der Chemie 2015, 63, 266-305. DOI: 10.1002/nadc.201590092
    2014
    073 Influence of the Peripheral Alkyl Chain Length on the Mesomorphic Properties of Electron Acceptor pi-extended Hat Derivatives, R. Juárez, M. Ramos, M. Lehmann, J. L. Segura, Synthetic Metals 2014, 195, 222–227. Link
    072 Trendbericht Organische Chemie 2013, S. Bräse (Coordinator) et al., Nachrichten aus der Chemie 2014, 62, 264-301. DOI: 10.1002/nadc.201490086.
    2013
    071 STAR-SHAPED MESOGENS”, M. Lehmann, in Handbook of Liquid Crystals, 2nd edition, Vol. 5, Chapter 5 (eds. J. W. Goodby, P. J. Collings, T. Kato, C. Tschierske, H. Gleeson, P. Raynes, ISBN 978-3-527-32773-7, Wiley-VCH, Weinheim 2013.
    070 DESIGN OF BIAXIAL NEMATIC MESOGENS”, M. Lehmann, V. Görtz, in Handbook of Liquid Crystals, 2nd edition, Vol. 3, Chapter 13 (eds. J. W. Goodby, P. J. Collings, T. Kato, C. Tschierske, H. Gleeson, P. Raynes, ISBN 978-3-527-32773-7, Wiley-VCH, Weinheim 2013.
    069 FILAMENTS FORMED IN THE HEXAGONAL COLUMNAR LIQUID CRYSTAL PHASE OF STAR-SHAPED OLIGOBENZOATES”, T. Ostapenko, M. Weyland , A. Eremin, M. Lehmann, R. Stannarius, Liquid Crystals 2013, 40, 345–353. http://dx.doi.org/10.1080/02678292.2012.747736
    068 THE ELASTIC AND OPTICAL PROPERTIES OF A BENT-CORE THIADIAZOLE NEMATIC LIQUID CRYSTAL: THE ROLE OF THE BEND ANGLE”, S. Kaur, L. Tian, H. Liu, C. Greco, A. Ferrarini, J. Seltmann, M. Lehmann, H. F. Gleeson, J. Mater. Chem. C 2013, 1, 2416-2425. DOI:10.1039/C3TC00852E.
    067 TRENDBERICHT ORGANISCHE CHEMIE 2012”, S. Bräse (Coordinator) et al., Nachrichten aus der Chemie 2013, 61, 265-297.
    2012
    066 Search for Biaxiality in a Shape-persistent Bent-core Nematic Liquid Crystal”, Y.-K. Kim, M. Majumdar, B. I. Senyuk, L. Tortora, J. Seltmann, M. Lehmann, A. Jákli, J. T. Gleeson, O. D. Lavrentovich, S. Sprunt, Soft Matter 2012, 8, 8880-8890.
    065 Dielectric Technique to Measure the Twist Elastic Constant of Liquid Crystals: The Case of a Bent-Core Material”; P. Salamon and N. Éber, J. Seltmann, M. Lehmann, J. T. Gleeson, S. Sprunt, A. Jákli; Physical Review E 2012, 85, 061704.
    064 Search for Biaxiality in a Shape-persistent Bent-core Nematic Liquid Crystal”; Y.-K. Kim, M. Majumdar, B. I. Senyuk, L. Tortora, J. Seltmann, M. Lehmann, A. Jákli, J. T. Gleeson, O. D. Lavrentovich, S. Sprunt; electronic-Liquid Crystal Communications. Link
    063 Trendbericht Organische Chemie 2011”, S. Bräse (Coordinator) et al., Nachrichten aus der Chemie 2012, 60, 265-299.
    062 Star-shaped Mesogens - Hekates: The Most Basic Star Structure with Three Branches”, M. Lehmann, in Top. Curr. Chem. (ed. C. Tschierske) ISBN 978-3-642-27590-6, Springer Berlin Heidelberg 2011. DOI: 10.1007/128_2011_266
    2011
    061 Biaxial Nematics - From their Prediction to the Materials and the Vicious Circle of Molecular Design, M. Lehmann, Liquid Crystals 2011, 38, 1389-1405.
    060 Homogeneous and Homeotropic Alignment of Bent-core Uniaxial and Biaxial Nematic Liquid Crystals, HG. Yoon, S.-W. Kang, M. Lehmann, J. O. Park, M. Srinivasarao, S. Kumar, Soft Matter 2011. DOI: 10.1039/c1sm05653k
    059 Non-symmetric Bent-core Liquid Crystals Based on a 1,3,4-Thiadiazole Core Unit and their Nematic Mesomorphism, J. Seltmann, A. Marini, B. Mennucci, S. Dey, S. Kumar, M. Lehmann, Chem. Mater. 2011, 23, 2630–2636. DOI: 10.1021/cm200643u
    058 V-Shaped Nematogens with the Magic Angle"", J. Seltmann, K. Müller, S. Klein, M. Lehmann, Chem. Commun. 2011, 47, 6680–6682. DOI: 10.1039/c1cc10577a
    057 Influence of F, CH3 and Ester Groups on the Phase Behaviour of Liquid Crystalline, Low Melting V-shaped 1,3,4-Thiadiazoles, J. Seltmann, M. Lehmann, Liq. Cryst. 2011, 38, 407–422. DOI: 10.1080/026_78292.2010.550070
    056 Role of Core-chirality in Perylene Bisimides in the Condensed State, M. M. Safont-Sempere, V. Stepanenko, M. Lehmann, F. Würthner, J. Mater. Chem. 2011, 21, 7201-7209. DOI: 10.1039/cljm10309a
    055 Trendbericht Organische Chemie 2010, S. Bräse (Koordinator) et al., Nachrichten aus der Chemie 2011, 59, 254-283. DOI: 10.1002/nadc.201176371
    054 Mesogens and Mesophases, M. Lehmann, Michael Jahr, in D. Andrews, G. Scholes, G. Wiederrecht (Eds.), Comprehensive Nanoscience and Technology, Vol. 5, pp 277-357, Elsevier Amsterdam 2011. DOI:10.1016/B978-0-12-374396-1.00059-3
    2010
    053 Body-centered Cubic Phase in 3-arm Star Mesogens: A Torsional Tapping AFM and GISAXS Study, C. H. M. Weber, F. Liu, X.-B. Zheng, G. Ungar, N. Mullin, J. K. Hobbs, M. Jahr, M. Lehmann, Soft Matter 2010, 6, 5227-5246. DOI:10.1039/C0SM00420K
    052 Nuclear Magnetic Resonance Spectroscopic Investigations of Phase Biaxiality in the Nematic Glass of a Shape-persistent V-shaped Mesogen, J. L. Figueirinhas, G. Feio, C. Cruz, M. Lehmann, Ch. Köhn, R. Dong, J. Chem. Phys. 2010, 133, 174509. DOI: 10.1063/1.3496491
    051 Biaxial Nematic Mesophases from Shape-persistent Mesogens with a Fluorene Bending Unit, M. Lehmann, Ch. Köhn, C. Cruz, J. L. Figueirinhas, G. Feio, R. Dong, Chem. Eur. J. 2010, 16, 8275-8279. DOI: 10.1002/chem.201001214
    050 Star-shaped Conjugated Systems (Review), H. Detert, M. Lehmann, H. Meier, Materials 2010, 3, 3218-3330.
    049 Trendbericht Organische Chemie 2009”, S. Bräse (Koordinator) et al., Nachrichten aus der Chemie 2010, 58, 267-299.
    2009
    048 Enantiotropic Low-temperature Nematics from V-shaped Thiadiazole Mesogens, M. Lehmann, J. Seltmann, Beilstein, J. Org. Chem. 2009, 5, 73. DOI: 10.3762/bjoc.5.73
    047 The Dawn in the Area of Thermotropic Biaxial Nematics, M. Lehmann, Liquid Crystals Today 2009, 18, 31-34.
    046 Star Mesogens (Hekates) – Tailor-made Molecules for Programming Supramolecular Functionality, M. Lehmann, Chem. Eur. J. 2009, 15, 3628-3651. DOI: 10.1002/chem.200802625
    045 Synthesis and Mesomorphic Properties of new V-shaped Nematogens Containing a Thiadiazol and a Thiazole Bending Unit, M. Lehmann, J. Seltmann, Alexander A. Auer, Eric Prochnow, Udo Benedikt, J. Mater. Chem. 2009, 19, 1978-1988. DOI: 10.1039/b818240j
    044 Crown Ethers with Lateral Ortho-Terphenyl Units: Effect of Ester Groups and Sodium Salts on the Mesomorphic Properties, N. Steinke, M. Jahr, M. Lehmann,* A. Baro, W. Frey, S. Tussetschläger, S. Sauer, S. Laschat, J. Mater. Chem. 2009, 19, 645-654. DOI: 10.1039/b814536a
    2008
    043 Programming Star-mesogens Towards the Formation of Columnar or Cubic Phases, M. Lehmann, M. Jahr, Chem. Mater. 2008, 20, 5453-5456. DOI: 10.1021/cm8013094
    042 Star-shaped Oligobenzoates with a Naphtaline Chromophore as Potential Semiconducting Liquid Crystal Materials, M. Lehmann,* M. Jahr, J. Gutmann, J. Mater. Chem. 2008, 18, 2995-3003. DOI: 10.1039/b803000f
    041 Synthesis and Properties of Oxadiazole Based V-shaped, Shape Persistent Nematogens, M. Lehmann,* Ch. Köhn, H. Kresse, Z. Vakhovskaya, Chem. Commun. 2008, 1768-1770. DOI: 10.1039/b718348h
    040 Columnar Mesophases with 3D Order from New Functional Non-conventional Star Mesogens, M. Lehmann,* M. Jahr, F. C. Grozema, R. D. Abellon, L. D. A. Siebbeles, M. Müller, Adv. Mater. 2008, 20, 4414-4418. DOI: 10.1002/adma.200800852
    039 Star-shaped Oligobenzoates: Non-conventional Mesogens Forming Columnar Helical Mesophases, M. Lehmann,* M. Jahr, B. Donnio, R. Graf, S., Gemming, I. Popov, Chem. Eur. J. 2008, 14, 3562-3576. DOI: 10.1002/chem.200700922
    038 Self-assembly of Hydrogen-bond Assisted Supramolecular Azatriphenylene Architectures, M. Palma, J. Levin, O. Debever, Y. Geerts, M. Lehmann,* P. Samori*, Soft Matter 2008, 4, 303-310.
    2007
    037 Polymorphism in Liquid Crystals from Star-shaped Mesogens, S. Gemming, I. Popov, M. Lehmann, Philosophical Magazine Letters 2007, 87, 883-891.
    036 Synthesis and Solid-state Structure of a Star-shaped Oligobenzoate, M. Lehmann, M. Jahr, T. Rüffer, H. Lang, Z. Naturforschung 2007, 62b,988-994.
    035 Homeotropic Alignment of Columnar Liquid Crystals in Open Films by Means of Surface Patterning, R. I. Gearba, D. V. Anokhin, A. I. Bondar, W. Bras, M. Jahr, M. Lehmann, D. A. Ivanov, Adv. Mater. 2007, 19,815-820.
    2006
    034 The Solution Structure of Stilbenoid Dendrimers: A Small-angle Scattering Study, S. Rosenfeldt, E. Karpuk, M. Lehmann, H. Meier, P. Lindner, L. Harnau, M. Ballauff, ChemPhysChem 2006, 7, 2097-2104.
    033 Self-organization and Nanoscale Electronic Properties of Azatriphenylene-based Architectures: A Scanning Probe Microscopy Study, M. Palma, J. Levin, V. Lemaur, A. Liscio, V. Palermo, J. Cornil, Y. Geerts, M. Lehmann, P. Samori, Adv. Mater. 2006, 18, 3313-3317.
    032 Shape-persistent V-shaped Mesogens – Formation of Nematic Phases With Biaxial Order, M. Lehmann, S.-W. Kang, Ch. Köhn, S. Haseloh, U. Kolb, D. Schollmeyer, Q. Wang, S. Kumar, J. Mater. Chem. 2006, 16, 4326-4334. DOI: 10.1039/b605718g
    031 Two-stage Self-assembly of Star-shaped Mesogens in Double Helices, D. A. Ivanov, R. I. Gearba, D. Anokhin, S. Magonov, M. Lehmann, PMSE Preprints 2006, 94, 655-656.
    030 Highly Fluorescent Crystalline and Liquid-crystalline Columnar Phases of Pyrene-based Structures, A. Hayer, V. de Halleux, A. Köhler, A. El-Garoughy, E.W. Meijer, J. Baberá, J. Tant, J. Levin, M. Lehmann, J. Gierschner, J. Cornil, Y. H. Geerts, J. Phys. Chem. B 2006, 110, 7653-7659.
    029 Liquid Crystalline Metal-free Phthalocyanines Designed for Charge and Exciton Transport, J. Tant, Y. H. Geerts, M. Lehmann, V. De Cupere, G. Zucchi, B. W. Laursen, T. Bjornholm, V. Lemaur, V. Marcq, A. Burquel, E. Hennebicq, F. Gardebien, P. Viville, D. Beljonne, R. Lazzaroni, J. Cornil, J. Phys. Chem. B 2006, 110, 3449.
    028 New ABC Core for the Synthesis of Nonsymmetric Star Molecules, M. Lehmann, M. Jahr, Org. Lett. 2006, 8, 721-723. DOI: 10.1021/ol0528585
    027 Supramolecular Order of Stilbenoid Dendrons: Importance of Weak Interactions, M. Lehmann, C. Köhn, H. Meier, S. Renker, A. Oehlhof, J. Mater. Chem. 2006, 16, 441-451.
    2005
    026 Semi-flexible Star-shaped Molecules: Conformational Analysis of Nano-seggregated Mesogens Forming Columnar Liquid-Crystal Phases, S. Gemming, M. Lehmann, G. Seifert, Z Metallkd. 2005</>, 96, 988-997 (ISSN 0179-4841).
    025 Liquid Crystalline Metal-free Phthalocyanines Designed for Charge and Exciton Transport, J. Tant, Y. H. Geerts, M. Lehmann, V. De Cupere, G. Zucchi, B. W. Laursen, T. Bjornholm, V. Lemaur, V. Marcq, A. Burquel, E. Hennebicq, F. Gardebien, P. Viville, D. Beljonne, R. Lazzaroni , J. Cornil, Journal of Physical Chemistry B 2005, 109, 20315-20323 (ISSN 1520-6106).
    024 Templating Crystal Growth at the Nanometer-scale with a Monotropic Columnar Mesophase, R. I. Gearba, A. Bondar, M. Lehmann, B. Goderis, W. Bras, M. H. J. Koch, D. A. Ivanov, Advanced Materials 2005, 17, 671-676.
    023 High Charge Carrier Mobility in P-deficient Discotic Mesogens: Design and Structure-property Relationship, M. Lehmann, G. Kestemont, R. G. Aspe, C. Buess-Herman, M. H. J. Koch, M. G. Debije, J. Piris, M. P. de Haas, J. M. Warman, M. D. Watson, V. Lemaur, J. Cornil, Y. H. Geerts, R. Gearba, D. A. Ivanov, Chemistry a European Journal 2005, 11, 3349-3362. (ISSN 0947-6539).
    2004
    022 Star-shaped Conjugated Compounds Forming Nematic Liquid Discotic Systems, H. Meier, M. Lehmann, Hans Christoph Holst, Dirk Schwöppe, Tetrahedron 2004, 60, 6881-6888 (ISSN 0040-4020).
    021 Electronic Delocalization in Discotic Liquid Crystals: A Joint Experimentally and Theoretical Study,X. Crispin, J. Cornil, R. Friedlein, K. K. Okudaira, V. Lemaur, A. Crispin, G. Kestemont, M. Lehmann, M. Fahlman, R. Lazzaroni, Y. Geerts, G. Wendin,N. Ueno, J.-L. Brédas, W. R. Salaneck, J. Am. Chem. Soc. 2004, 126, 11889-11899 (ISSN 0002-7863).
    020 Rigid Phenylene Ethynylene Units Linked by a V-Shaped Centre. An Approach to Biaxial Nematogens?, M. Lehmann, J. Levin, Mol. Cryst. Liq. Cryst. 2004, 411, 273-281 (ISSN 1058-725X).
    019 New Star-shaped Mesogens with Three Different Arms on a 1,3,5-Benzene Core, M. Lehmann, R. I. Gearba, M. H. J. Koch, D. A. Ivanov, Mol. Cryst. Liq. Cryst. 2004, 411, 397-406 (ISSN 1058-725X).
    018 Stilbenoid Dendrimers - Preparation and Properties, H. Meier, M. Lehmann, in H.S. Nalwa (Ed.), Encyclopedia of Nanoscience and Nanotechnology, Vol. 10, 95-106, American Scientific Publishers, Stevensons Ranch 2004.
    017 Hexaazatriisothianaphthenes: New Electron Carrier Mesogens?, M. Lehmann, V. Lemaur, J. Cornil, J.-L. Brédas, S. Goddard, I. Grizzi, Y. Geerts, Tetrahedron 2004, 60, 3283-3291 (ISSN 0040-4020).
    016 Charge Transport Properties in Discotic Liquid Crystals: A Quantum-chemical Insight into Structure-Property Relationships, V. Lemaur, D. A. da Silva Filho, V. Coropceanu, M. Lehmann, Y. Geerts, J. Piris, M. G. Debije, A. M. van de Craats, K. Senthilkumar, L. D. A. Siebbeles, J. M. Warman, J. L. Brédas, J. Cornil, Journal of American Chemical Society 2004, 126, 3271-3279 (ISSN 0002-7863).
    015 Semi-flexible Star-shaped Mesogens as Non-conventional Columnar Liquid Crystals, M. Lehmann, R. I. Gearba, M. H. J. Koch, D. A. Ivanov, Chem. Mater. 2004, 16, 374-376. DOI: 10.1021/cm034487x
    014 Photochemistry and Mobility of Stilbenoid Dendrimers in their Neat Phases, M. Lehmann, I. Fischbach, H. W. Spiess, H. Meier, J. Am Chem. Soc. 2004, 126, 772-784 (ISSN 0002-7863).
    2003 to 2001
    013 Discotic Liquid Crystals as Electron Carrier Materials, O. Roussel, G. Kestemont, J. Tant, V. de Halleux, R. Gómez Aspe, J. Levin, A. Remacle, M. Lehmann, Y. H. Geerts, Mol. Cryst. Liq. Cryst. 2003, 396, 35-39.
    012 Guest-Host Systems of 1,3,5-Tristyrylbenzenes, H. Meier, E. Karpouk, M. Lehmann, D. Schollmeyer, V. Enkelmann, Z. Naturforschung 2003, 58b, 775-781.
    011 Tailoring Discotic Mesophases: Columnar Order Enforced With Hydrogen Bonds, R. I. Gearba, M. Lehmann, J. Levin,, D. A. Ivanov, M. H. J. Koch, J. Baberá, M. G. Dibije, J. Piris, Y. H. Geerts, Adv. Mater. 2003, 15, 1614-1618. DOI: 10.1002/adma.200305137
    010 Supramolecular Helical Stacking of Enantiopure and Racemic Polycatenar Oxazoline Metallomesogens, J. Baberá, E. Cavero, M. Lehmann, J. L. Serrano, T. Sierra, J. T. Vazquez, J. Am. Chem. Soc. 2003, 125, 4527-4533.
    009 Chiral Hexacatenar Metallomesogens: Supramolecular Organization Versus Steric Demand of Chiral Cores, M. Lehmann, T. Sierra, J. Baberá, J.L. Serrano, R. Parker, J. Mater. Chem. 2002, 12, 1342-1350.
    008 Discotic Mesogens with Potential Electron Carrier Properties, G. Kestemont, V. de Halleux, M. Lehmann, D.A. Ivanov, M. Watson, Y. H. Geerts, Chem. Commun. 2001, 2074-2075.
    007 Rigid Chiral Building Blocks for Copper(II)- and Palladium(II)- Containing Liquid Crystals, M. Lehmann, M. Marcos, J. L. Serrano, T. Sierra, C. Bolm, K Weickardt, A. Magnus, G. Moll, Chem. Mater. 2001, 13, 4374-4381.
    2000 to 1998
    006 Stilbenoid Dendrimers, H. Meier, M. Lehmann, U. Kolb, Eur. J. Chem. 2000, 6, 2462.
    005 Selective and Statistical CC-Bonding by Photolysis of Discotic and Dendritic Compounds, R. Petermann, C. Schnorpfeil, M. Lehmann, M. Fetten, H. Meier, J. Inf. Recording. 2000, 25, 259-264.
    004 Photoreactive Liquid Crystals in the Series of Dendritic and Cyclic Stilbenoid Compounds, H. Meier, M. Lehmann, C. Schnorpfeil, M. Fetten, Mol. Cryst. Liq. Cryst. 2000, 352, 85-92.
    003 Dendirmers Consisting of Stilbene or Distyrylbenzene Building Blocks. Synthesis and Stability, M. Lehmann, B. Schartel, M. Hennecke, H. Meier, Tetrahedron 1999, 55, 13377-13394.
    002 Photochemistry of Stilbenoid Compounds - Ways from Photochemistry to Materials Science, H. Meier, U. Stalmach, M. Fetten, P. Seus, M. Lehmann, C. Schnorpfeil, J. Inf. Recording. 1998, 24, 47-60.
    001 Stilbenoid Dendrimers, H. Meier, M. Lehmann, Angew. Chem. Int. Ed. 1998, 37, 643-645.
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