Copper on responsive polymer microgels: a recyclable catalyst exhibiting tunable catalytic activity

Copper has been immobilized on a chitosan-based responsive polymer microgel by simply stirring the microgel dispersion with copper sulfate. The ensuing catalyst is highly active for a model azide-alkyne [3+2]-cycloaddition reaction, and can be recycled at least 5 times; the catalytic activity can be...

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Veröffentlicht in:	Chemical communications (Cambridge, England) England), 2014-11, Vol.50 (91), p.14217-14220
Hauptverfasser:	Wu, Qingshi, Cheng, Han, Chang, Aiping, Bai, Xue, Lu, Fan, Wu, Weitai
Format:	Artikel
Sprache:	eng
Schlagworte:	ACTIVITY Alkynes - chemistry Azides - chemistry Catalysis CATALYSTS Catalytic activity Copper Copper - chemistry COPPER SULFATE Cyclization Dispersions Gels - chemistry Microgels Molecular Structure Particle Size Polymer gels POLYMERS Polymers - chemistry RECOVERY (WASTES) Recycled Stirring Surface Properties Triazoles - chemical synthesis Triazoles - chemistry
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Beschreibung
Zusammenfassung:	Copper has been immobilized on a chitosan-based responsive polymer microgel by simply stirring the microgel dispersion with copper sulfate. The ensuing catalyst is highly active for a model azide-alkyne [3+2]-cycloaddition reaction, and can be recycled at least 5 times; the catalytic activity can be tuned via swelling-deswelling transitions of the polymer gels.
ISSN:	1359-7345 1364-548X
DOI:	10.1039/c4cc06436d