Issue 12, 2020

Copper-based ionic liquid-catalyzed click polymerization of diazides and diynes toward functional polytriazoles for sensing applications

Abstract

Click polymerizations of azides and alkynes catalyzed by Cu(I) species have been widely studied and play a significant role in polymer synthesis. In these approaches, long reaction time and/or elevated temperature are generally required. Fabrication of new catalytic systems with higher efficiency and an energy saving feature is still a key challenge. In this work, an efficient copper-based ionic liquid (Cu-IL) is facilely prepared and used to catalyze the azide–alkyne click polymerization under mild reaction conditions. Soluble and thermally stable 1,4-regioregular polytriazoles (PTAs) with satisfactory molecular weights (up to 56 100) are readily synthesized in high yields (up to 95%). Thanks to its intense blue fluorescence and excellent water-solubility, the resultant ionic PTA could be applied for sensitive explosive detection, selective Fe3+ ion recognition and specific bioimaging in its aqueous solution. Thus, this work not only establishes a powerful Cu-IL-catalyzed azide–alkyne click polymerization but also provides PTAs with versatile properties.

Graphical abstract: Copper-based ionic liquid-catalyzed click polymerization of diazides and diynes toward functional polytriazoles for sensing applications

Supplementary files

Article information

Article type
Paper
Submitted
25 Sep 2019
Accepted
18 Dec 2019
First published
18 Dec 2019

Polym. Chem., 2020,11, 2006-2014

Copper-based ionic liquid-catalyzed click polymerization of diazides and diynes toward functional polytriazoles for sensing applications

B. Li, R. Hu, A. Qin and B. Z. Tang, Polym. Chem., 2020, 11, 2006 DOI: 10.1039/C9PY01443H

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