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International Journal of Photoenergy
Volume 7, Issue 1, Pages 17-22
http://dx.doi.org/10.1155/S1110662X05000036

Solid state photochromism of spiropyrans

1Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090, Russia
2Y. Kupala State University of Grodno, Ozheshko 22, Grodno 230023, Belarus

Copyright © 2005 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of spiropyrans possessing photochromic properties in solid state were investigated. UV irradiation (λmax=365 nm) of the thin vacuum deposited spiropyran films results in conversion of the colorless form to the photocolored one. The reaction is photochemically and thermally reversible. The photochromic activity of the solid material and polystyrene matrix has been compared. Raman spectroscopy has been used for studying the influence of metallic surface on the adsorbed spiropyran layers.