Chemistry Letters

Photochromism. Synthesis and properties of indolinospirobenzothiopyrans

S Arakawa, H Kondo, J Seto

Index: Arakawa, Sei'ichi; Kondo, Hirofumi; Seto, Jun'etsu Chemistry Letters, 1985 , p. 1805 - 1808

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Citation Number: 9

Abstract

Novel photochromic compounds, indolinospirobenzothiopyrans, were prepared and their properties in polymer films were examined. The absorption bands of the colored form lie around 100 nm deeper in the long-wave region of the spectrum than are the case with the common spiropyrans.