期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：4
页码：11600
出版社：S&S Publications
摘要：Conjugated polymers containing carbazole moieties either in the main or side chains have attracted muchattention because of their unique electronic properties, their high photoluminescence quantum efficiency, and thermalstability. In this paper we present a combined experimental study of the structure, optical and spectroscopic propertiesof a new copolymer based on carbazole and terphenyl (PEcbz-Ter). This copolymer was prepared by oxidativecopolymerization. First, we describe the route for preparing the new copolymer. Then, we report characterizationmeasurements based on solide state Nuclear Magnetic Resonance (13C NMR), IR absorption, UV–visible absorption,photoluminescence spectroscopy, and X-ray diffraction. We report also additional transient photoluminescence (PL)study on this copolymer in order to complete a broader comparative view of optical properties of these two systemsand particularly, to investigate the nature of the excited states, their lifetime and decay processes. We also determinedthe Quantum Yield (QY) of the PL emission for the copolymer. The decay behaviors provide an understanding on howthe conformational changes and the chemical nature of the substituent groups can tune the emission properties in suchstructures and change their QY.
关键词：PEcbz-Ter; UV-Vis-NIR absorption; 13C RMN; PL; PLRT; and X-ray diffraction.
