Photochromic and thermochromic spiranes. 20. Photochromic properties of solid-phase films of novel formyl-substituted spiropyrans of the indoline series

Authors

  • А. B. Метелица Scientific Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090
  • Н. B. Вoлошин Scientific Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090
  • H. E. Шелепин Scientific Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090
  • М. И. Княжанский Scientific Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090
  • B. И. Минкин Scientific Research Institute of Physical and Organic Chemistry, Rostov State University, Rostov-on-Don 344090

Abstract

We have synthesized novel formyl-substituted spiropyrans of the indoline series. We have obtained solid-phase amorphous films of the synthesized spiropyrans by thermal vacuum deposition and established their capacity for photochrornic transformations. We have investigated the effect of the substituents on the spectral properties of the original and colored forms of the solid-phase spiropyran films. We have shown that the kinetic characteristics of the photochromic transformations of these compounds in solid-phase films depend considerably on the bulk of the substituents in the indoline and benzopyran moieties, and also their electron active properties in the latter. Along with reversible processes, in the solid-phase spiropyran films we have observed irreversible photoreactions leading to degradation of the photochromic system.

How to Cite
Metelitsa, A. V.; Voloshin, N. V.; Shelepin, N. E.; Knyazhanskii, M. I.; Minkin, V. I. Chem. Heterocycl. Compd. 1996, 32, 346. [Khim. Geterotsikl. Soedin. 1996, 399.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01169257

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Published

1996-03-25

Issue

No. 3 (1996)

Section

Original Papers