Photochromic liquid-crystalline copolymers containing crown ether groups

Autor:	V. P. Shibaev, A. Yu. Bobrovsky, A. S. Medvedev
Rok vydání:	2007
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Photochromism Azobenzene chemistry Potassium perchlorate Liquid crystal Mesogen Polymer chemistry Copolymer General Chemistry Crown ether Macromolecule
Zdroj:	Russian Chemical Bulletin. 56:2414-2425
ISSN:	1573-9171 1066-5285
DOI:	10.1007/s11172-007-0384-6
Popis:	An approach was developed for the synthesis of new multifunctional photosensitive liquid-crystalline copolymers of the acryl series containing azobenzene, ionophoric, and mesogenic groups in the same macromolecule. The phase behavior of the copolymers was studied. Most of these copolymers were demonstrated to form nematic mesophases. An increase in the concentration of crown-containing groups to 26 mol.% leads to amorphization of the copolymers. The influence of complexation of the crown ether groups of the copolymers with potassium perchlorate on the mesomorphic properties of the systems was investigated. A comparative study of the photooptical properties of the copolymers in solution and thin films was performed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cb104683527728f18954a6328e3539bd https://doi.org/10.1007/s11172-007-0384-6 Zobrazit plný text záznamu Full text from SpringerLink