光致变色的吲哚类俘精酸酐 (E)-1-苄基-2-甲基-3-吲哚亚乙基丁二酸酐的合成

Photochromic indylanhydride synthesis and properties (E) 1 benzyl 2 methyl 3 indylethylidene succinic anhydride

合成了一种新的吲哚类俘精酸酐：（Ｅ）-１-苄基-２-甲基-３-吲哚亚乙基（亚异丙基）丁二酸酐。经ＭＳ、ＩＲ、ＵＶ、ＨＮＭＲ及元素分析确定了其结构，在紫外光或阳光照射下其最大吸收波长由３８８ｎｍ变至５９２ｎｍ（颜色由浅黄色变为蓝色），在白光或黄绿光照射下又可恢复。研究了它在不同极性溶剂中的光致变色性能，随溶液极性的增加，最大吸收发生红移。该化合物具有良好的光致变色性能，在防复印、防伪及在光信息存储材料等方面具有潜在的应用价值。

A new indylfulgide——(E) 1 benzyl 2 methyl 3 indylethylidene (isopropylidene) succinic anhydride has been synthesized. It's structure was determined by using MS, Ir, UV, 1HNMR and elemental analysis. The maximum absorption wavelength changes from 388 nm to 592 nm(it's colour changes from yellowish to blue) on exposure to U.V. light, and the reverse reaction could be induced by irradiation with white light of yellow green light. It's photochromic properties have been investigated in different polarity solvents, the maximum absorption exhibits red shift with the increasement of the solvent polarity. The product has efficient photochromic characteristic. It has potential utilities in preventing duplication, Meventing forgery and organic memory devices.