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.
                            本文描述的是新型
偶氮苯类发色团。这些发色团可用于光致变色组合物,该组合物由聚合物基体和发色团组成,其中发色团为新型
偶氮苯型结构。光致变色组合物在受到可见光光谱中至少一种波长的激光照射时具有光致发光性。与包含众所周知的
偶氮苯发色团的设备相比,包含新型
偶氮苯发色团化合物的光致变色设备显示出更高的光诱导双折射、更高的衍射效率和更明亮的图像。光致变色组合物可包括液晶。