Molecular Photonics of 2,4-Dibenzylidenecyclobutanone and Its Derivativesстатья
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Дата последнего поиска статьи во внешних источниках: 7 октября 2020 г.
Аннотация:Spectral, luminescent, and time-resolved properties of 2,4-dibenzylidenecyclobutanone and itsdiethylamino, methylthio, methoxy, and dimethoxy derivatives have been studied. The electron-donatingsubstituents shift bathochromically the absorption band maximum by 45–140 nm relative to unsubstituteddienones and the fluorescence maximum by 50–125 nm relative to the methoxy derivative. Upon the laserpulse, dienones convert to the triplet state with a lifetime of 0.15–3.5 μs and a stable photoproduct is formed.