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Heteroanalogs of spiropyrans: Recent developments

机译:螺吡喃异构体:最新进展

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The paper discusses the synthesis of photochromic spiropyrans and recent developments in the synthesis of heteroanalogs of spiropyrans viz. spiroxazines and spirothiopyrans. Spiropyran is an important class of organic photo-chromic compounds. Discovery of the photochromic reactions of the spiropyrans by Fischer and Hirschberg in 1952 and Hirschberg's idea of using phenomenon for a photochemical erasable memory initiated active research on photochromism. Numerous other applications based on reversible color and other changes in physical and chemical properties were suggested and examined for photochromic spiropyrans and spirooxazines: self developing photography, actinometry, displays, filters and lenses of variable optical density, including eye protecting glasses, etc.
机译:本文讨论了光致变色螺吡喃的合成以及螺螺吡喃杂类似物的合成的最新进展。螺恶嗪和螺硫吡喃。螺吡喃是一类重要的有机光致变色化合物。 Fischer和Hirschberg于1952年发现了螺吡喃的光致变色反应,Hirschberg的将现象用于光化学可擦写存储器的构想引发了对光致变色的积极研究。提出并基于光色变螺吡喃和螺恶嗪提出了许多其他基于可逆颜色和其他物理化学性质变化的应用:自显影照相,光度法,显示器,滤光片和可变光密度的镜片,包括护目镜等。

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