Issue 4, 2021

Novel tetraphenylethylene (TPE)-functionalized nitroxide/alkoxyamine for nitroxide-mediated homogeneous and heterogeneous polymerizations

Abstract

Tetraphenylethylene (TPE)-containing 4-amino-2,2,6,6-tetramethylpiperidine-1-oxyl (NH2-TEMPO) and 3-(((2-cyanopropan-2-yl)oxy)(cyclohexyl)amino)-2,2-dimethyl-3-phenylpropanenitrile (Dispolreg 007) were synthesized and utilized to mediate/initiate NMP in both homogeneous and heterogeneous polymerization systems. The introduction of TPE groups decreased the C–O bond dissociation energy (BDE) of NH2-TEMPO-St and led to more efficient NMP with a higher reaction rate, even at lower temperatures. Moreover, for both solution polymerization and miniemulsion polymerization, quantitative information of the polymerization process could be easily acquired with the naked eye without destroying the reaction system, by building the relationship between the increased photoluminescence (PL) intensity of the system and monomer conversion as well as the molecular weight (Mn).

Graphical abstract: Novel tetraphenylethylene (TPE)-functionalized nitroxide/alkoxyamine for nitroxide-mediated homogeneous and heterogeneous polymerizations

Supplementary files

Article information

Article type
Paper
Submitted
24 Sep 2020
Accepted
14 Dec 2020
First published
15 Dec 2020

Polym. Chem., 2021,12, 526-533

Novel tetraphenylethylene (TPE)-functionalized nitroxide/alkoxyamine for nitroxide-mediated homogeneous and heterogeneous polymerizations

H. Ma, L. Wang, Y. Liang, Z. Cui, P. Fu, M. Liu, X. Qiao and X. Pang, Polym. Chem., 2021, 12, 526 DOI: 10.1039/D0PY01369B

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