Facile synthesis, structure and properties of CO2-sourced poly(thioether-co-carbonate)s containing acetyl pendants via thio-ene click polymerization?

Polymer Chemistry Pub Date: 2021-12-07 DOI: 10.1039/D1PY01477C

Abstract

Herein, we present a facile and effective method for the synthesis of CO2-sourced sequence-controlled poly(thioether-co-carbonate)s via consecutive organocatalyzed carboxylative cyclization of vinyl-functionalized propargylic alcohol with CO2, ring-opening transesterification of the resultant cyclic carbonate with polyols, and subsequent photo-initiated thio-ene click polymerization. More diverse units can be successively introduced into the polymer chain during this process and the structural characterization was identified by FT-IR, 1H-NMR and 13C-NMR spectroscopy. The presence of uniformly distributed acetyl pendants at the β-position of the carbonate moiety endows polymers with novel degradation ability. Moreover, hyperbranched poly(thioether-co-carbonate)s exhibit blue fluorescence under UV irradiation. Thus, this strategy is a promising method for rapid access to constructing CO2-sourced sequence-controlled polymers with highly diverse structure and multiple functionality.

Graphical abstract: Facile synthesis, structure and properties of CO2-sourced poly(thioether-co-carbonate)s containing acetyl pendants via thio-ene click polymerization
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