New Conjugated Bis(AZO) Mesogens with 'Push-PULL' Substituents

Autor:	Gian Piero Spada, Jacques Malthête, Riccardo Labruto, Stefano Masiero, Giovanni Gottarelli
Přispěvatelé:	R. Labruto, G. Gottarelli, J. Malthete, S. Masiero, G. P. Spada
Rok vydání:	2004
Předmět:	Photoisomerization Liquid crystal Chemistry Polymer chemistry Nitro Alkoxy group General Materials Science General Chemistry Conjugated system Condensed Matter Physics Photochemistry Push pull
Zdroj:	Molecular Crystals and Liquid Crystals. 420:1-8
ISSN:	1563-5287 1542-1406
Popis:	Two series of conjugated bis(azo) compounds with “push” (alkoxy, acyloxy) and “pull” (nitro) substituents at the end positions were synthesized and their thermal behavior investigated. Smectic A and nematic mesophases were observed over long temperature intervals. Surprisingly, photoirradiation of these compounds does not give detectable amounts of the expected photoisomerized isomers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e04b20f75ed8835971cc53684a8f86d0 https://doi.org/10.1080/15421400490487353 Zobrazit plný text záznamu