Prof. Dr. M. Lehmann

Contact

Prof. Dr. Matthias Lehmann

Institute of Organic Chemistry
University of Würzburg
Am Hubland
97074 Würzburg / Germany

room: 01.026
phone: +49 931 31 83708
fax: +49 931 31 87350
matthias.lehmann@uni-wuerzburg.de

Student advice & counselling

for Bachelor students as well as BAFÖG affairs please contact Prof. Dr. Roland Mitric

Fachstudienberater (Bachelor)

Key research interests

Our research aims for the design of novel liquid crystalline (LC) materials consisting of compounds with non-conventional shapes such as stars, V- or board-shaped molecules. The star topology is generated by symmetric attachment of three to six arms to a core unit. We achieve the control of the self-assembly in LC materials by the variation of the core, the arm scaffold and the peripheral chains. Detailed understanding of the stacking procedures in the solid-state by nanosegregation and space-filling allows the incorporation and positioning of functional building blocks. This converts the compounds on complex functional LC materials, which can be applied in organic electronics. Board- and V-shaped mesogens are investigated with respect to the formation of the highly elusive biaxial nematic mesophase. Biaxial nematogens are proposed as new materials for the future fast-switching LC-displays.

Recent Publications

Parallel Polar Dimers in the Columnar Self-Assembly of Umbrella-Shaped Subphthalocyanine Mesogens Current M. Lehmann, M. Baumann, M. Lambov, A. Eremin, Adv. Funct. Mater. 2021, Online Version.

DOI: 10.1002/adfm.202104217

The Liquid Crystal Click Procedure for Oligothiophene-Tethered Phthalocyanines – Self-Assembly, Alignment and Photo Current M. Dechant, M. Lehmann, G. Uzurano, A. Fujii, M. Ozaki, J. Mater. Chem. C 2021, Accepted Manuscript.

DOI: 10.1039/D1TC00710F

Unfolding multi-stranded perylene bisimide LC columns - A mesogen design for efficient nanoscale multilayer self-assembly M. Lehmann, M. Hecht, S. Herbst, K. Cui, F. Wuerthner, Chem. Commun. 2020, 56, 14015-14018 .

DOI: 10.1039/D0CC06458K

Columnar Liquid Crystals from Star‐shaped Conjugated Mesogens as Nano‐Reservoirs for Small Acceptors M. Lambov, N. Hensiek, A. Pöppler, M. Lehmann, ChemPlusChem 2020, 85, 2219-2229.

DOI: 10.1002/cplu.202000341

Self-Sorting Supramolecular Polymerization: Helical and Lamellar Aggregates of Tetra-Bay-Acyloxy Perylene Bisimide M. Hecht, P. Leowanawat, T. Gerlach, V. Stepanenko, M. Stolte, M. Lehmann, F. Würthner, Angew. Chem. Int. Ed. 2020, 85, 17084-17090.

DOI: 10.1002/anie.202006744

Liquid crystals from shape-persistent porphyrin stars with intrinsic free space T. Ghosh, L. Gerbig, M. Lambov, M. Dechant, M. Lehmann, J. Mater. Chem. 2020, 8, 5562-5571.

DOI: 10.1039/C9TC07086A

The complete list of publications is available at the Publication section