Original title: Photo-active liquid crystalline materials: effect of lateral substitution far from the chiral center
Authors: Mironov, Sergei ; Suchánek, T. ; Marhoul, J. ; Cigl, Martin ; Hamplová, Věra ; Bubnov, Alexej
Document type: Papers
Conference/Event: Studentská vědecká konference fyziky pevných látek a materiálů /12./, Nové Hrady (CZ), 20230904
Year: 2023
Language: eng
Abstract: Photosensitive liquid crystalline (LC) materials give a fascinating possibility to tune and control the optical properties of soft systems distantly by illumination by UV-Vis light. Lateral substitution on the molecular core is an effective tool to tune the behaviour of chiral LCs. The effect of lateral substitution (by F, Cl, Br and methyl group) on the self-assembling behaviour, several new LCs with substituents placed on the benzene ring far from the chiral centre are and studied. All compounds, with exception of Br-substituted one, possess the cholesteric phase. The photosensitive behaviour, in particular the conversion of the E-Z isomers, was studied in toluene solution by HPLC. The kinetics of the photo-isomerization was identified under illumination by UV light. Due to presence of a photo-active azo group these materials can be used as functional dopants for design of smart photo-active liquid crystalline mixtures targeted for various applications in optoelectronics.
Keywords: azobenzene; E-Z isomerization; lateral substitution; photosensitive chiral liquid crystal
Project no.: GA22-16499S (CEP)
Funding provider: GA ČR
Host item entry: Sborník příspěvků 12. Studentské vědecké konference fyziky pevných látek a materiálů, ISBN 978-80-01-07255-4

Institution: Institute of Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0352249

Permalink: http://www.nusl.cz/ntk/nusl-542066


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