Photophysical studies of a hemicyanine dye (LDS-698) in dioxane-water mixture, in different alcohols, and in a room temperature ionic liquid.
作者： Debabrata Seth , Souravi Sarkar , Rajib Pramanik , Chiranjib Ghatak , Palash Setua
DOI: 10.1021/JP810045H
关键词:
摘要: In this paper, we have investigated the photophysics of 1-ethyl-2-(4-(p-dimethylaminophenyl)-1,3-butadienyl)pyridinium perchlorate (LDS-698) molecule in dioxane−water mixture and a room temperature ionic liquid (RTIL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]). Both photoisomerization twisted intramolecular charge transfer (TICT) are possible molecule. We shown that TICT is favorable neat [bmim][BF4]. The change absorption energy LDS-698 with mole fraction water nonlinear these systems. Stern−Volmer plot also deviates from linearity This nonlinearity due to specific solvation molecules mixture.
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