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利用自行搭建的线阵CCD连续直读紫外-可见吸收光谱仪,研究了合成的螺吡喃类化合物6-硝基-1’,3’,3’-三甲基吲哚啉螺苯并吡喃的光致变色反应。通过研究在光照后闭环体开环与光照后开环体的闭环两个过程的光谱变化,讨论了合成产物的光致变色性质。证明该化合物的开环反应是一个快反应,在光照下的变色过程则是一个振荡平衡过程,而开环体的退色反应是一级动力学过程。
Using self-built linear array CCD direct reading UV-Vis absorption spectrometer, the synthesis of spiropyran 6-nitro-1 ’, 3’, 3’-trimethylindoline spirobenzopyran Photochromic reaction. The photochromism properties of the synthesized products were discussed by studying the spectral changes of the ring-opened ring and the ring-closed ring after illumination. It is proved that the ring-opening reaction of the compound is a fast reaction, and the color-changing process under illumination is an oscillatory equilibrium process. The fading reaction of the ring-opening body is a first-order kinetic process.