3-烷基/对烷氧基苯基-3-羟基-联茚满烯二酮衍生物的合成，晶体结构与固态光致变色及光致自由基性质研究

本文合成了一系列3-烷基/对烷氧基苯基-3-羟基-联茚满烯二酮新化合物，并通过¹H NMR, IR, MS 和元素分析数据进行了结构表征，其中化合物1,5,6的结构通过单晶X-Ray衍射进行了确证。分别用固体紫外光谱和电子自旋共振光谱研究了化合物的光致变色性能和光致自由基性质，结果表明：该类化合物在200W高压水银灯光源照射下产生光致变色现象，同时具有光致自由基性质。本文还根据分子结构和及分子内的作用力讨论了性质与结构之间的关系。

Synthesis,Crystal Structure,Solid Photochromic Properties and Light‐induced Radical Behavior of Bis{3‐[alkyl/(p‐alkoxyphenyl)]‐3‐hydroxyindan‐1‐on‐2‐ylidene} Derivatives

A series of new bis{3‐[alkyl/(p‐alkoxyphenyl)]‐3‐hydroxyindan‐1‐on‐2‐ylidene} derivatives 1 – 6 were prepared and characterized fully by ¹H NMR, IR, MS and elemental analysis data. The structures of compounds 1 , 5 and 6 were confirmed by the single‐crystal X‐ray diffraction. The photochromic and light‐induced properties were examined by means of UV‐Vis and electron spin resonance (ESR) spectroscopy methods, respectively. The results show that all the title compounds in this work simultaneously exhibit photochromism in solid state and generate stable free radicals under irradiation with a 200 W high pressure Hg‐lamp. Structure‐property relationship within these photochromic compounds was discussed in the context of their molecular structures and intra‐molecular interactions.