One‐pot synthesis of photosensitive dendrimer‐like polystyrenes from simultaneous copper(I)‐catalyzed azide–alkyne cycloaddition and atom transfer radical polymerization
One‐pot synthesis of photosensitive dendrimer‐like polystyrenes from simultaneous copper(I)‐catalyzed azide–alkyne cycloaddition and atom transfer radical polymerization
复制标题
DOI：
10.1002/pi.4134
复制
发表时间：
2012-05
影响因子：
3.2
通讯作者：
F. Yao;Liqun Xu;G. Fu;Baoping Lin
中科院分区：
文献类型：
--
作者：
F. Yao;Liqun Xu;G. Fu;Baoping Lin
以末端带有叠氮基的聚苯乙烯（PS）、苯乙烯单体、2，4-二溴异丁酸-4 ′-丙炔氧基偶氮苯、溴化铜（I）和配体为原料，通过一锅法CuAAC和原子转移自由基聚合（ATRP）合成了含偶氮苯结构/核的树枝状聚苯乙烯（PS）.通过凝胶渗透色谱、核磁共振氢谱和红外光谱等手段证实了树枝状PS的成功制备。由一锅法CuAAC和ATRP制备的树枝状PS在整个大分子和支链中都表现出明确和可控的分子结构，这归因于ATRP的可控性和点击化学的定量产率。由于偶氮苯单元在树枝状大分子中的引入，所制备的树枝状大分子状PS也表现出良好的光异构化性能。版权所有© 2012化学工业协会
Dendrimer-like polystyrenes (PSs) containing azobenzene moieties/core were prepared by one-pot copper(I)-catalyzed azide–alkyne cycloaddition (CuAAC) and atom transfer radical polymerization (ATRP) in the presence of PS with terminal azide groups, styrene monomers, 2,4-dibromoisobutyrate-4′-propynyloxyazobenzene, copper(I) bromide and ligand. The successful preparation of the dendrimer-like PSs was confirmed using gel permeation chromatography and 1H NMR and Fourier transform infrared spectroscopy. The dendrimer-like PSs prepared from one-pot CuAAC and ATRP exhibit a well-defined and controlled molecular structure in both whole macromolecules and the branches, which is attributed to the controlled character of ATRP and the quantitative yield of click chemistry. The dendrimer-like PSs prepared also exhibit good photo-isomerization properties due to the incorporation of azobenzene units within the dendrimers. Copyright © 2012 Society of Chemical Industry