Speaker
Prof.
Zbigniew Galewski
(Faculty of Chemistry, University of Wroclaw, Poland)
Description
Liquid-crystalline azobenzene derivatives are today very important materials in modern opto-electronics [1,2]. Chiral moiety can induce extra new structures and physical properties. In this communication after short review about mesogenic chiral azobenzenes a new series of compounds are presented [3].
Four types of mesophases were identified: chiral nematic, smectic A*, smectic C* and TGBA. For decyl derivative freezing process is not observed. Glass state is created.
By the use of the UV-Vis spectroscopy the photoisomerization studies were conducted. Moreover, the circular dichroism (CD) spectra were measured.
References
[1] Q. Li, Liquid Crystals Beyond Displays. Chemistry, Physics and Applications, Wiley, 2012.
[2] A. Sobolewska, J. Zawada, S. Bartkiewicz, and Z. Galewski, J. Phys. Chem. C 117, 10051−10058 (2013).
[3] J. Czeszejko-Sochacka, PhD Thesis, University of Wrocław, 2010.
Primary author
Prof.
Zbigniew Galewski
(Faculty of Chemistry, University of Wroclaw, Poland)
Co-authors
Ms
Izabela Niezgoda
(Faculty of Chemistry, University of Wroclaw, Poland)
Dr
Justyna Czeszejko-Sochacka
(Faculty of Chemistry, University of Wroclaw, Poland)
