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Photo- and Thermochromism. I. Infra-red Spectra of 1,3,3-Trimethylindoline-6'-nitro-8'- -bromobenzopyrylospirane Doped in Polyacrylonitril Thin Film

M. Leščinský

Department of Chemistry, Tokyo Institute of Technology, Ohokayama, Meguro-ku, Tokyo, Japan

 

Abstract:  The photo- and thermochromism of l,3,3-trimethylmdolme-6'-nitro-8'-bromobenzopyrylospirane doped in polyacrylonitril thin film was studied on the basis of changes of the infra-red spectra of complex solid solution. From reversible changes of „sensitive" absorption bands in connection with chemical changes in the course of spirane-merocyanine transformations, their probable assignment was made. From the changes of — N02 group vibrations, stereo rearrangement is expected.

Full paper in Portable Document Format: 233a194.pdf

 

Chemical Papers 23 (3) 194–197 (1969)

Tuesday, June 18, 2024

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