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Novel photochromic spirocyclic compounds of thienopyrroline series: 1: Spiropyrans

Paper ID Volume ID Publish Year Pages File Format Full-Text
29260 44143 2007 6 PDF Available
Title
Novel photochromic spirocyclic compounds of thienopyrroline series: 1: Spiropyrans
Abstract

Novel spiropyrans of the thienopyrroline series have been synthesized and their photochromic properties studied and compared with those of the indoline analogues. As compared with the indoline analogues, the absorption bands of the cyclic forms of the thienopyrroline spiropyrans are shifted to the blue spectral region, whereas those of the ring-opened forms are shifted to the red region. The merocyanine isomers of the thienopyrroline spiropyrans demonstrate greater thermal stability than their indoline analogues. At the same time thienopyrroline spiropyrans are more photodegradable and less fatigue resistant than the indoline congeners.

Keywords
Spiropyrans; Thienopyrrolenines; Photochromism; Fluorescence
First Page Preview
Novel photochromic spirocyclic compounds of thienopyrroline series: 1: Spiropyrans
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 189, Issues 2–3, 25 June 2007, Pages 161–166
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering