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One‐pot synthesis of photosensitive dendrimer‐like polystyrenes from simultaneous copper(I)‐catalyzed azide–alkyne cycloaddition and atom transfer radical polymerization
Author(s) -
Yao Fang,
Xu LiQun,
Fu GuoDong,
Lin BaoPing
Publication year - 2012
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4134
Subject(s) - dendrimer , atom transfer radical polymerization , azobenzene , polymer chemistry , cycloaddition , azide , gel permeation chromatography , chemistry , polymerization , click chemistry , alkyne , materials science , photochemistry , organic chemistry , catalysis , molecule , polymer
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 1 H 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