The photoinduced transformations of aziridine derivatives in liquid crystalline matrices
- 1 January 2009
- journal article
- Published by Pleiades Publishing Ltd in Russian Journal of Physical Chemistry A
- Vol. 83 (8) , 1350-1354
Abstract
The special features of the photoinduced transformations of 1,5-diaryl-3,5a-dihydro-1H-azireno[1,2-c]imidazole in liquid crystalline matrices were studied. During irradiation, changes in absorption bands at 630 and 430 nm were observed, which, in the cholesteric phase, were accompanied by a selective reflection band shift to sorter waves. The data obtained were in conformity with the concept of a two-stage character of phototransformations. The special features of the process in the liquid crystalline phase compared with crystals, polymeric dispersions, and solutions were considered.Keywords
This publication has 12 references indexed in Scilit:
- Tunable chiral materials for multicolour reflective cholesteric displaysLiquid Crystals, 1998
- Photosensitive chiral dopants with high twisting powerLiquid Crystals, 1994
- Photoinduced Change of Cholesteric LC-PitchMolecular Crystals and Liquid Crystals Incorporating Nonlinear Optics, 1990
- Solid State Photochemistry of Aziridines and OxiranesMolecular Crystals and Liquid Crystals, 1979
- Temperature Dependence of the Intrinsic Pitch in Induced Cholesteric SystemsBerichte der Bunsengesellschaft für physikalische Chemie, 1978
- Photochemical transformations of small ring heterocyclic compounds. XLII. 1,3-Dipolar cycloaddition reactions of the azomethine ylide derived from the 1,3-diazabicyclo[3.1.0]hex-3-ene systemThe Journal of Organic Chemistry, 1973
- Photochromic aziridines. I. Mechanism of photochromism in 1,3-diazabicyclo[3.1.0]hex-3-enes and related aziridinesJournal of the American Chemical Society, 1972
- Photochemically induced reversible color changes in cholesteric liquid crystalsJournal of the American Chemical Society, 1971
- Aziridines. XVIII. Reactions of a 1,3-diazabicyclo-[3.1.0]hex-3-ene with alkenes, alkynes, and diethyl azodicarboxylateThe Journal of Organic Chemistry, 1968
- Aziridine. XV. Synthesis and reactions of 1,3-diazabicyclo[3.1.0]hex-3-enesThe Journal of Organic Chemistry, 1967