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Photoinduced Iron-Based Water-Induced Phase Separable Catalysis (WPSC) ICAR ATRP of Poly(ethylene Glycol) Methyl Ether Methacrylate

Photoinduced Iron-Based Water-Induced Phase Separable Catalysis (WPSC) ICAR ATRP of Poly(ethylene Glycol) Methyl Ether Methacrylate

Jian Wu, Bingjie Zhang, Lifen Zhang, Zhenping Cheng, Xiulin Zhu

Macromol Rapid Commun. 2017 Jun;38(12).

PMID: 28422360

Abstract:

Iron-mediated atom transfer radical polymerization (ATRP) has gained extensive attention because of the superiority of iron catalysts, such as low toxicity, abundant reserves, and good biocompatibility. Herein, a practical iron catalyst recycling system, photoinduced iron-based water-induced phase separable catalysis ATRP with initiators for continuous activator regeneration, at room temperature is developed for the first time. In this polymerization system, the polymerization is conducted in homogenous solvents consisting of p-xylene and ethanol, using commercially available 5,10,15,20-tetraphenyl-21H,23H-porphine iron(III) chloride as the iron catalyst, ethyl 2-bromophenylacetate as the ATRP initiator, 2,4,6-trimethylbenzoyl diphenylphosphine oxide as the photoinitiator, and poly(ethylene glycol) methyl ether methacrylate as the model hydrophilic monomer. After polymerization, a certain amount of water is added to induce the phase separation so that the catalyst can be separated and recycled in p-xylene phase with very low residual metal complexes (<12 ppm) in the resultant polymers even after six times recycle experiments.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP16456818	5,10,15,20-Tetraphenyl-21H,23H-porphine iron(III) chloride		16456-81-8	Price

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