An interpretation of the photophysical properties of poly(N-vinylcarbazole) based on bichromophoric model systems and the conformational analysis of the polymer
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引用次数: 13
Abstract
The photophysical properties of poly(N-vinylcarbazole) are interpreted, based on the photophysical properties of the diastereomers of 2,4-di(N-carbazolyl)pentane and a theoretical study of the conformational distribution in the dyads of poly(N-vinylcarbazole). From the conformational distribution in the polymer it is derived that more than 95% of the excitation will occur on a chromophore belonging to an excimer site. Since excimer formation at these excimer sites is very rapid (>1010 s−1), it is concluded that, if energy migration is to be important, the rate constant of energy migration from one chromophore to another should be ⪢1010 s−1.
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