Polystyrene with Persistently Enhanced Fluorescence: Photo-Induced Atom Transfer Radical Polymerization Using a Pyrene-Based Initiator

被引：4
|
作者：
Su, Chun-Hsien [1 ,2 ]
Wu, Zhenqiang [3 ]
Lin, Ching-Kai [1 ,2 ]
Han, Hui-An [1 ,2 ]
Chen, Yi-An [4 ]
Chou, Pi-Tai [4 ]
Fu, Xuefeng [3 ]
Peng, Chi-How [1 ,2 ]
机构：
[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 30013, Taiwan
[2] Natl Tsing Hua Univ, Frontier Res Ctr Fundamental & Appl Sci Matters, Hsinchu 30013, Taiwan
[3] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
[4] Natl Taiwan Univ, Dept Chem, Ctr Emerging Mat & Adv Devices, Taipei 10617, Taiwan
来源：
CHEMPHOTOCHEM | 2019年 / 3卷 / 11期
关键词：
atom transfer radical polymerisation; fluorescence; photopolymerisation; pyrene; styrene; METHYL-METHACRYLATE; ELECTRON-TRANSFER; PPM AMOUNTS; ATRP; COPOLYMER; POLYMERS; MONOMERS; LIGHT;
D O I：
10.1002/cptc.201900138
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The pyrene-based atom transfer radical polymerization (ATRP) initiator of 1-pyrenemethyl 2-bromoisobutyrate (PMBriB) was applied to the photo-induced radical polymerization of methyl acrylate, methyl methacrylate, and styrene. During the polymerization, the fluorescence of the polymer solution caused by the chain end pyrene group was observed to be slightly enhanced in all cases, possibly due to the decline of the aggregation caused quenching (ACQ) effect. However, the fluorescence of polystyrene obtained from photo-induced ATRP was significantly increased. Differential scanning calorimeter (DSC) measurements, NMR spectroscopy, and fluorescence measurements associated with a series of control studies demonstrated that the enhanced fluorescence was a persistent phenomenon in both solution and the solid state but the polystyrenes with and without enhanced fluorescence showed no observable difference in chemical bonding and molecular conformation. At this stage, the coexistence of pyrene, 2-bromoisobutyrate group, styrene, and light was required for this novel phenomenon and the mechanism of this fluorescence enhancement is still being studied.
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页码：1153 / 1161
页数：9
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