Molecular Crystals and Liquid Crystals p. 24 - 29 (2016)
Update date:2022-08-28
Topics:
Inada, Shunsuke
Araki, Tatsunori
Sato, Yukichi
Tatewaki, Yoko
Okada, Shuji
Electro-optic chromophores with 4-cyano-5-dicyanomethylene-2,5-dihydro-1H-pyrrol-2-one (CDCOP) and aniline moieties as an acceptor and a donor, respectively, were synthesized with modification of three substituents, among which two were attached to the aniline moiety (R) and one was introduced to the CDCOP ring (R′). Butyl and hexyl groups were introduced as R and R′, and higher melting points were observed when R and R′ were the same. For the chromophore fixation, thermal crosslinking based on cyanate trimerization was performed. The chromophore with cyanate moiety in R′ was combined with bisphenol A dicyanate, and the thermal chromophore fixation was confirmed with almost no chromophore degradation.
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