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A series of spiropyrans with a polyaromatic or heteroaromatic pendant was synthesized conveniently.Their photochromic behaviors were investigated with the aid of absorption spectral measurements.The results indicated that the compounds with the same parent spiropyran but different aromatic pendant show significantly different photochromic properties.This may be due to the π-π orbital interaction between the polyaromatic pendant and the open photomerocyanine form of spiropyran.The results obtained are very useful in the molecule design area.  相似文献   
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IntroductionDiscoveryofthephotochromicreactionsofspiropy ransbyFischerandHirshberg1in 195 2andHirshberg’sideaofusingthephenomenonfora“photochemicalerasablememory”2 initiatedactiveresearchonpho tochromism .Numerousotherapplicationsbasedonre versiblecolorando…  相似文献   
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