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Photoisomerization of Stilbazolium Chromophores with Potential Nonlinear Optical Applications
Author(s) -
Gaines George L.
Publication year - 1987
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198703411
Subject(s) - isomerization , photoisomerization , chromophore , protonation , photochemistry , conformational isomerism , chemistry , irradiation , nonlinear optical , molecule , nonlinear system , organic chemistry , physics , catalysis , quantum mechanics , ion
Why is 1 photostable? Many other stilbazolium compounds, including protonated 1 , undergo isomerization to the cis form upon irradiation. This isomerization is forestalled, however, when a quinoid resonance structure of type 1a is favored. The cisoid conformer of 1a is thermodynamically unstable compared with 1a (transoid).

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