N,N′-Disubstituted Naphthyl(Azo)-2,3-Dihydroperimidine Blue Dyes Exhibiting High Solubility in Ferroelectric Liquid Crystal Hosts
作者:
M.K. O'Brien,
P.J. Shannon,
R.P. Grasso,
期刊:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
(Taylor Available online 1992)
卷期:
Volume 220,
issue 1
页码: 167-175
ISSN:1058-725X
年代: 1992
DOI:10.1080/10587259208033437
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The synthesis of N,N′-disubstituted naphthyl(azo)-2,3-dihydroperimidine blue dyes and a comparison of their absorption maxima and solubility in ferroelectric liquid crystal (FLC) hosts is described. The N,N′-disubstituted azo perimidines exhibited a much higher absorption maxima (20-50 nm) than their unsubstituted counterparts. In addition, the absorption maxima of the naphthyl(azo) perimidines was significantly higher than their phenyl(azo) analogues. Although the FLC solubility of the N,N′-dimethyl substituted dyes was similar to that measured for analogous unsubstituted dyes, the N,N′-dibutyl substituted bis(azo) dyes exhibited solubilities in excess of 8%.
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