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Abstract Zinc-porphyrin based multi-arm star polymers (ZnTHPP-(PNIPAM-Br)n) with poly(N-isopropylacrylamide) as n = 1–4 arms respectively were successfully prepared via atom transfer radical polymerization (ATRP) initiated by four zinc porphyrin initiators (ZnTHPP-nBr) with… Click to show full abstract
Abstract Zinc-porphyrin based multi-arm star polymers (ZnTHPP-(PNIPAM-Br)n) with poly(N-isopropylacrylamide) as n = 1–4 arms respectively were successfully prepared via atom transfer radical polymerization (ATRP) initiated by four zinc porphyrin initiators (ZnTHPP-nBr) with n = 1–4 initiator groups accordingly, and these structures of star-shaped polymers were characterized by FT-IR, UV–Vis, 1H NMR and GPC. They were used as photocatalyst for the degradation of Rhodamine B(RhB) under visible-light irradiation to study the effect of topology on photocatalytic activity, it was found as the number of arms increased, the photocatalytic activity and stability of the star polymer increased. The four-arm star polymer (ZnTHPP-(PNIPAM-Br)4) was shown the best photocatalytic performance and stability, could be recycled by warming.
Journal Title: Journal of Molecular Structure
Year Published: 2020
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