摘要:
Described herein are novel azo-benzene type chromophores. The chromophores are useful in photochromic compositions comprising a polymer matrix and a chromophore, wherein the chromophore is a novel azo-benzene type structure. The photochromic composition is photoresponsive upon irradiation by at least one wavelength of laser light across the visible light spectrum. Photochromic devices which comprise the novel azo-benzene type chromophore compound show significantly higher photoinduced birefringence, higher diffraction efficiency, and brighter images than devices that comprise well known azo-benzene chromophores. The photochromic composition may include a liquid crystal.
摘要:
A diamide type azo compound represented by the general formula (I): which is derived from 2-hydroxy-3,6-dicarboxylic acid and at least one of the amide moieties in the compound is an aliphatic amide moiety, various use of the same and process for preparing the same are provided.
摘要:
Described herein are novel azo-benzene type chromophores. The chromophores are useful in photochromic compositions comprising a polymer matrix and a chromophore, wherein the chromophore is a novel azo-benzene type structure. The photochromic composition is photoresponsive upon irradiation by at least one wavelength of laser light across the visible light spectrum. Photochromic devices which comprise the novel azo-benzene type chromophore compound show significantly higher photoinduced birefringence, higher diffraction efficiency, and brighter images than devices that comprise well known azo-benzene chromophores. The photochromic composition may include a liquid crystal.
摘要:
The present invention provides novel water-soluble azo compounds derived from 2-hydroxynaphthalene-3,6-dicarboxylic acid or derivatives thereof and diazonium salts having sulfo group(s). These compounds are useful as raw materials for dyes having excellent dyeing properties and fastness.