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

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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

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Article information


Submitted
25 Sep 2019
Accepted
18 Dec 2019
First published
18 Dec 2019

Polym. Chem., 2020, Advance Article
Article type
Paper

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, Advance Article , DOI: 10.1039/C9PY01443H

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