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Photochromic materials sensitive for UV recording

D. ILIEVA1,* , TS. PETROVA1, V. DRAGOSTINOVA1

Affiliation

  1. Central Laboratory of Optical Storage and Processing of Information, Bulgarian Academy of Sciences, Acad. G. Bonchev Str, bl. 101, P.O. Box 95, 1113 Sofia, Bulgaria

Abstract

We report a spectrophotometric investigation of the photoprocesses in different polymer films containing stilbene and stilbenecarboxaldehyde. The films are sensitive to UV light. We have observed considerable photoinduced changes in the absorption spectra of the samples due to trans-cis photoisomerization of the stilbene-type molecules. The influence of different chemical sensitizers on the photochromic process is observed. If the UV- illumination is done with linearly polarized light, the induced changes in the absorption spectra are anisotropic..

Keywords

Photochromic materials, Photoinduced dichroism, Stilbene-type molecules, UV recording.

Submitted at: Nov. 1, 2006
Accepted at: Feb. 15, 2007

Citation

D. ILIEVA, TS. PETROVA, V. DRAGOSTINOVA, Photochromic materials sensitive for UV recording, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 2, pp. 486-489 (2007)