Physical Sciences and Engineering Division, KAUST Catalysis Center, Polymer Synthesis Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
nikolaos.hadjichristidis@kaust.edu.sa
收稿:2019-06-29,
修回:2019-7-11,
录用:2019-7-12,
网络首发:2019-07-24,
纸质出版:2019-09
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Citation: Jiang, Y.; Hadjichristidis, N. pH-responsive AIE-active polyethylene-based block copolymers. Chinese J. Polym. Sci. 2019, 37, 930–935
Yu Jiang, Nikos Hadjichristidis. pH-responsive AIE-active Polyethylene-based Block Copolymers[J]. Chinese Journal of Polymer Science, 2019, 37(9): 930-935.
Citation: Jiang, Y.; Hadjichristidis, N. pH-responsive AIE-active polyethylene-based block copolymers. Chinese J. Polym. Sci. 2019, 37, 930–935 DOI: 10.1007/s10118-019-2330-0.
Yu Jiang, Nikos Hadjichristidis. pH-responsive AIE-active Polyethylene-based Block Copolymers[J]. Chinese Journal of Polymer Science, 2019, 37(9): 930-935. DOI: 10.1007/s10118-019-2330-0.
A novel synthetic strategy towards pH-responsive aggregation-induced emission (AIE)-active tetraphenylethene (TPE)-functionalized polyethylene-based block copolymers is presented. Tris(3-(4-(1
2
2-triphenylvinyl)phenoxy)propyl)borane was used to initiate the polyhomologation of dimethylsulfoxonium methylide to afford well-defined
α
-TPE-
ω
-OH linear polyethylenes (PE). The terminal hydroxyl groups were transformed to atom transfer radical polymerization (ATRP) initiating sites by esterification with
α
-bromoisobutyryl bromide
followed by polymerization of
tert
-butyl acrylate (
t
BA) to provide TPE-PE-
b
-P
t
BA block copolymers. After hydrolysis of the
t
Bu group to COOH group
the corresponding pH-responsive TPE-PE-
b
-PAA block copolymers were obtained. All synthesized block copolymers revealed AIE behavior either in solution or bulk. Due to the pH-responsivity of PAA chains
the aggregation state at different pH and consequently the fluorescence intensity changed. Also
the synthesized block copolymers exhibited ion-specificity fluorescence properties.
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