Russian Chemical Bulletin

, Volume 48, Issue 8, pp 1491–1496 | Cite as

Spectral and photochemical properties of bifunctional compounds and their complexes

2. Photocyclization of α,ω-bis(diphenylamino)alkanes to α,ω-di(carbazolyl)alkanes
  • M. F. Budyka
  • T. N. Gavrishova
  • O. D. Laukhina
Physical Chemistry

Abstract

Quantum yields of the step-by-step photocyclization of diphenylamine (DPA) derivatives Ph2N−(CH2)n−NPh2,n=3–6, 9, to the corresponding α,ω-di(carbazolyl)alkanes were measured. Atn>3, the presence of the second DPA group had no effect on the cyclization of the first DPA group; however, cyclization of the second DPA group was retarded after cyclization of the first DPA group. The effect was explained by quenching of the excited DPA group by the carbazole group newly formed in the semi-cyclic compound. For disubstituted propane (n=3), the mutual influence of the two groups at both stages of the reaction was found.

Key words

bifunctional compounds diphenylamine photocyclization carbazole energy transfer 

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Copyright information

© Kluwer Academic/Plenum Publishers 1999

Authors and Affiliations

  • M. F. Budyka
    • 1
  • T. N. Gavrishova
    • 1
  • O. D. Laukhina
    • 1
  1. 1.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovkaRussian Federation

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