Abstract
The luminescence spectra of plasma-polymerized N-vinylcarbazole, pPVCa, films were measured at 10.8 and 280 K and compared with the spectra of films prepared from a solution of conventionally polymerized poly ( N-vinylcarbazole), PVCa. Besides the typical fluorescence of carbazolyl groups, no long-lifetime phosphorescence characteristics for PVCa was detected. Instead, a broad emission band of some other chromophores was observed. After a 15 days' ageing of the films, the structure of this band became more distinct and it was found to be similar to that of the almost identical fluorescence spectra of 1,6-diphenyl-1,3,5-hexatriene and fluoranthene molecules. The observed differences in the luminescence spectra document that the chemical structure of pPVCa is less regular than that of PVCa due to complex reaction processes in the plasma.
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