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THE LEHMANN GROUP: ORGANIC SOFT MATERIALS AND LIQUID CRYSTALS

Group Members

PhD Students

Maximilian Baumann

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 81897

Email: maximilian.baumann@uni-wuerzburg.de

Maximilian Baumann finished his chemistry (Master) studies at the Julius-Maximilians-Universität of Würzburg in May 2019. He wrote his Master thesis "Umbrella-Shaped Mesogens for Polar and Ferroelectric Liquid-crystalline Phases" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Current Research Topic

Trigonal-pyramidal mesogens for ferroelectric and polar liquid crystals.

Publications

  • "Parallel Polar Dimers in the Columnar Self-Assembly of Umbrella-Shaped Subphthalocyanine Mesogens" M. Baumann, M. Lambov, A. Eremin, Adv. Funct. Mater.  2021 DOI: 10.1002/adfm.202104217

  • "Polare Flüssigkristalle mit Regenschirmstruktur" M. Baumann, Bunsen-Magazin Ausgabe 4/2021.

  • "Supramolecular click procedures in liquid crystals" M. Lehmann, M. Dechant, L. Gerbig and M. Baumann, Liquid Crystals  2019 DOI: 10.1080/02678292.2019.1618936

Prizes

Winning prize at the 47th German Liquid Crystal Conference 2021 (Online-Conference) for his poster with the title "Umbrella-shaped LC Star Subphthalocyanines - E-Field Orientable Polar Mesophases".

Leonard Fink

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 83101

Email: leonard.fink@uni-wuerzburg.de

Leonard Fink studied chemistry (Bachelor and Master) at the Julius-Maximilians-Universität of Würzburg from October 2017 to December 2022. He wrote his Master thesis "Synthese BTBT-substituierter Phthalocyanine mit Siloxan-Peripherie als organische Halbleitermaterialien" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Current Research Topic

Phthalocyanine based star mesogens with BTBT arms and peripheral siloxane moieties.

Anselm Herzog

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 87870

Email: anselm.herzog@uni-wuerzburg.de

Anselm Herzog studied Math and Chemistry (teaching degree) at the Julius-Maximilians-Universität Würzburg from October 2011 to March 2016. From March 2016 to November 2021 he studied Chemistry at the Julius-Maximilians-Universität  Würzburg.  He wrote his Bachelor thesis “Synthese und Charakterisierung eines neuartigen C3-symmetrischen OPV-Sternmesogens“ in 2018 and his Master thesis "Synthesis and Characterisation of Hexasubstituted oligothiophen starmesogenes containing PBIs" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Current Research Topic

Trigonal-pyramidal mesogens for ferroelectric and polar liquid crystals.

Katja Noll

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 888769

Email: katja.noll@uni-wuerzburg.de

Katja Noll studied chemistry (Master) at the Julius-Maximilians-Universität of Würzburg from October 2014 to February 2020. She wrote her Master thesis "Synthese und Untersuchungen von Sternmesogenen mit drei Ankergruppen zur Anbindung an Gäste und anorganische Substrate" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

For her PhD thesis she is funded by the "Studienstiftung des deutschen Volkes".

Current Research Topic

Synthesis and investigations of shape-persistant C3-symmetric star mesogens with guest molecules in the free spaces.

Publications

  • "Discotic Star Mesogen with Thymine Nucleobases Exhibiting a Rare Gyroid Cubic Mesophase with 3D Conductivity" K. Noll, M. Lambov, D. P. Singh, M. Lehmann, Chemistry – A European Journal, 2023, 30, e2023033. DOI: 10.1002/chem.202303375

  • "Conference report on the 49th German Liquid Crystal Conference" S. Varytimiadou & K. Noll, Liquid Crystals Today, 2023, 32, 12–14. DOI: 10.1080/1358314X.2023.2221616

Prizes

Winning prize at the 49th German Liquid Crystal Conference 2023 for her poster with the title "Structural Control of Nucleobase Star Mesogens – Switching Bicontinuous Cubic Networks to Hexagonal Columnar Phases".

Aparna Prasad

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Email: aparna.prasad@uni-wuerzburg.de

Aparna Prasad studied chemistry (Bachelor's & Master's Degree) at the Madras Christian College (University of Madras, India) from 2010 to 2015. She completed her master's degree in catalytic chemistry at the SRM Research Institute.

For her PhD thesis she is funded by the "Studienstiftung des deutschen Volkes" (Oct. 2019).

Current Research Topic

“Low Melting Donor-Acceptor Star Mesogens Based On Phthalocyanine-Oligo(Phenyleneethenylene)-Fullerene Triads – New Filled Mesophases For Potential Photovoltaic Applications”.

Lisa Reber, geb. Gerbig

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 84173

Email: lisa.reber@uni-wuerzburg.de

Lisa Reber studied chemistry at the Julius-Maximilians-Universität of Würzburg from October 2013 to April 2019. She wrote her Master thesis "Flüssigkristalline Fullerenhelices auf Basis von Drei- und Vierarmsternmesogenen: Synthese und Struktur-Eigenschafts-Beziehungen" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Current Research Topic

Four-armed star-shaped shape-persistent porphyrine based liquid crystals.

Publications

Prizes

Winning prize at the 46th German Liquid Crystal Conference in Paderborn for her poster with the title "Star-shaped Porphyrine-Oligo(phenylenevinylene)-Fullerene Triads – New Mesogens for Organic Bulk Heterojunction Materials?".

Nikolai Scheuring

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 83101

Email: nikolai.scheuring@uni-wuerzburg.de

Nikolai Scheuring studied chemistry (Master) at the Julius-Maximilians-Universität of Würzburg from October 2010 to April 2018. He wrote his Master thesis "Synthese von Oligopeptiden mit fluorierten Azobenzolen als fotoschaltbare supramolekulare Polymere" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Current Research Topic

Board-shaped mesogens.

Pascal Weinberger

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: +49 931 31 87557

Email: pascal.weinberger@uni-wuerzburg.de

Pascal Weinberger studied chemistry (Bachelor's and Master's Degree) at the Julius-Maximilians-Universität of Würzburg from October 2015 to January 2021. He wrote his master's thesis "Systematische Untersuchung der thermotropen Eigenschaften flüssigkristalliner ionischer Cyanoborate" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Current Research Topic

Borate anions forming ionic liquid crystals.

Publications

  • "Sulfinyl-aminotroponiminates: alkali- (Li, Na, K) and heavy-metal (Bi) complexes" A. Hanft, D. Rottschäfer, V. Müller, P. Weinberger, K. Radacki, X. Xie and C. Lichtenberg, Dalton Trans.  2022, 51, 10809-10817. DOI: 10.1039/D2DT01802K

Technical Staff

Paul Runge

Institut für Organische Chemie

Am Hubland

97074 Würzburg

Phone: coming soon

Email: paul.runge@uni-wuerzburg.de

Paul Runge studied chemistry (Bachelor and Master) at the Julius-Maximilians-Universität of Würzburg from October 2015 to August 2022. He wrote his Master thesis "Hexasubstituierte, alternierende Sternmesogene mit Oligothiophenarmen" at the Institute of Organic Chemistry in the working group of Prof. Dr. Lehmann.

Master Students

Bahar Ebrahimghasri

Research Topic

tba

Email: bahar.ebrahimghasri@stud-mail.uni-wuerzburg.de

Laboratory Assistants

Alumni

  • Steffen Maier (2023)
  • Leonard Fink (2022)
  • Paul Runge (2022)
  • Anselm Herzog (2021)
  • Pascal Weinberger (2021)
  • Katja Noll (2020)
  • Hannah Kraft, geb. Dengel (2019)
  • Maximilian Baumann (2019)
  • Lisa Reber, geb, Gerbig (2019)
  • Nikolai Scheuring (2018)
  • Michael Ohnemus (2017)
  • Moritz Dechant (2016)
  • Matthew Abdy (2015)
  • Markus Hügel (2012)
  • Steff Gloza (2009)
  • Michael Jahr (2005)

  • Louis Richter (2023)
  • Julian Spieß (2023)
  • Kai Wieser (2022)
  • Entea Asllani (2021)
  • Daniel Friedewald (2020)
  • Leonard Fink (2020)
  • Ron Gary (2020)
  • Alena Neudert (2019)
  • Steffen Maier (2019)
  • Robin Elflein (2019)
  • Otto Staudhammer (2019)
  • Dominik Weh (2019)
  • Jan Schäfer (2018)
  • Sophia Löffelsend (2018)
  • Nicola Hensiek (2018)
  • Lena Glaser (2017)
  • Katja Noll (2017)
  • Lukas Miller (2017)
  • Maximilian Baumann (2016)
  • Moritz Pfister (2015)
  • Nikolai Scheuring (2014)
  • Magnus Mahl (2014)
  • Lisa Kirschbaum (2014)
  • Michael Ohnemus (2014)
  • Moritz Dechant (2014)
  • Maria Krebs (2012)