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Photoluminescence properties of new poly( N ‐vinylcarbazole)‐3‐methylthiophene (PVK‐3MeT) graft copolymer
Author(s) -
Chemek M.,
Massuyeau F.,
Wéry J.,
Hlel A.,
Ayachi S.,
Faulques E.,
Lefrant S.,
Alimi K.
Publication year - 2011
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.35074
Subject(s) - photoluminescence , copolymer , materials science , radiative transfer , singlet state , exciton , polymer chemistry , photochemistry , chemical engineering , optoelectronics , polymer , composite material , chemistry , optics , physics , atomic physics , condensed matter physics , excited state , engineering
Steady‐state and time‐resolved photoluminescence (TRPL) measurements are used in order to investigate the emission properties of new graft copolymer involving poly( N ‐vinylcarbazole) (PVK) and poly(3‐methylthiophene) (PMeT) named PVK‐3MeT. The photo‐generated species in PVK‐3MeT are identified as singlet intrachain excitons. Furthermore, radiative and nonradiative lifetimes have been calculated. The observed changes in the photo‐physical properties of the different condensed phases could be directly related to the nanostructure of the material. The use of PVK in the chemical synthesis allows the obtaining of a new organic material with better emission and slowly radiative recombination compared to those of polythiophenes indicating that the radiative channel is more enhanced. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012