Synthesis and characterization of well-defined PVBCz-b-PDMAEMA multifunctional block copolymer prepared via ATRP

2015 Global Conference on Polymer and Composite Materials

材料科学;化学

Mao, Tengfei^1 ; Gou, Yanzi^1 ; Wang, Jun^1

Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defence Technology, Changsha

410073, China^1

关键词: Carbazole units;    Fluorescent intensity;    FT-IR characterization;    Linear increment;    Macroinitiators;    Monomer conversions;    Synthesis and characterizations;    Thermo responsiveness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/87/1/012058/pdf
DOI  :  10.1088/1757-899X/87/1/012058

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A functional polymer containing carbazole unit, PVBCz, was successfully prepared via atom transfer radical polymerization (ATRP) of 9-(4-vinylbenzyl)-9H-carbazole (VBCz). The controlled features of ATRP were confirmed by the linear increment of the molecular weight with the monomer conversion, while the molecular weight distribution was relatively narrow (Mw/Mn≤1.33). The block copolymer PVBCz-b-PDMAEMA was synthesized via ATRP, using PVBCz-Br as a macro-initiator and DMAEMA as the second monomer.1H-NMR, GPC and FT-IR characterization confirmed the successful synthesis of PVBCz-b-PDMAEMA. The resulting copolymer exhibited both fluorescence from PVBCz segments and thermoresponsiveness from PDMAEMA segments. Moreover, the fluorescent intensity of PVBCz-b-PDMAEMA in aqueous solutions increased as the temperature rose, which could be attributed to the coupling of two different functions.