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High Energy Chemistry

, Volume 53, Issue 1, pp 5–12 | Cite as

Photochemical Properties of Supramolecular Covalently Bound Dyad Based on 8-Hydroxy-2-styrylquinoline

  • M. F. BudykaEmail author
  • T. N. Gavrishova
  • V. M. Li
  • S. A. Dozmorov
PHOTOCHEMISTRY
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Abstract

Spectral and photochemical properties of bichromophoric dyad with two styrylquinoline (SQ) photochromes bridged by the decamethylene group have been investigated. According to stationary spectrophotometry data, there is no substantial interaction between the two SQ units of the dyad in the ground (S0) state. Under irradiation, two competitive reversible reactions occur: trans-cis photoisomerization of the SQ photochrome and intramolecular [2+2] photocycloaddition between two SQ photochromes, indicating the transient formation of excimer. A comparison with results of model studies and earlier obtained data leads to the assumption that the excimer formation is facilitated by covalent bridging of the SQ photochromes by the decamethylene chain, whereas π-staking between the two SQ photochromes does not seem to play a substantial role.

Keywords:

diarylethylene biphotochromic dyad photoisomerization photocycloaddition cyclobutane 

Notes

ACKNOWLEDGMENTS

The study was carried out understate task no. 01201361847 and supported by the Russian Foundation for Basic Research, project no. 17-03-00789.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • M. F. Budyka
    • 1
    Email author
  • T. N. Gavrishova
    • 1
  • V. M. Li
    • 1
  • S. A. Dozmorov
    • 1
    • 2
  1. 1.Institute of Problems of Chemical Physics, Russian Academy of SciencesChernogolovkaRussia
  2. 2.Faculty of Basic Physicochemical Engineering, Moscow State UniversityMoscowRussia

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