Photophysical properties and photoisomerization of aza derivatives of trans-2-styrylnaphthalene: trans-1-(2-pyrazinyl)-2-( n-quinoxalinyl)ethylene

Extensive vibronic mixing between the lowest excited 1(π,π* (or 1(n,π*)) and 1(n,π*) (or 1)π,π*)) states leads to efficient non-radiative decay in the excited singlet state of trans-1-(2-pyrazinyl)-2-( n-quinoxalinyl)ethylene ( n-PyQxE; n=2, 6) (aza derivatives of trans-2-styrylnaphthalene (2-StN))....

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Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 1992-07, Vol.67 (1), p.23-32
Main Authors: Shim, Sang Chul, Kim, Maeng Sup, Lee, Ki Taek, Lee, Bok Hee
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
General and physical chemistry
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
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Summary:Extensive vibronic mixing between the lowest excited 1(π,π* (or 1(n,π*)) and 1(n,π*) (or 1)π,π*)) states leads to efficient non-radiative decay in the excited singlet state of trans-1-(2-pyrazinyl)-2-( n-quinoxalinyl)ethylene ( n-PyQxE; n=2, 6) (aza derivatives of trans-2-styrylnaphthalene (2-StN)). Azulene quenching of direct and triplet-sensitized trans å cis photoisomerization of n-PyQxE indicates that direct photoisomerization proceeds through the triplet manifold only at room temperature.
ISSN:1010-6030
1873-2666
DOI:10.1016/1010-6030(92)85164-P