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Researchers from Chinese Academy of Science Report Recent Findings in Biological Pigments [Synthesis of star poly(N-isopropylacrylamide) with...

July 1, 2014



Researchers from Chinese Academy of Science Report Recent Findings in Biological Pigments [Synthesis of star poly(N-isopropylacrylamide) with end-group of zinc-porphyrin via ATRP and its photocatalytic activity under visible light]

By a News Reporter-Staff News Editor at Life Science Weekly -- A new study on Biological Factors is now available. According to news reporting originating in Changchun, People's Republic of China, by NewsRx journalists, research stated, "A series of well-defined star-shaped poly(N-isopropylacrylamide) (ZnTHPP-PAM) with zinc-porphyrin as the core was synthesized by atom transfer radical polymerization (ATRP). Zinc(11)meso-tetra(p-bromopropionylphenyl)porphyrin (ZnTHPP-Br) was employed as the initiator, and CuBr/tris(2-dimeoeth-yl)amine(Me6TREN) was selected as the catalyst system."

The news reporters obtained a quote from the research from the Chinese Academy of Science, "The structures of the target polymers were characterized by FT-IR and H-1 NMR. The polydispersity index (PDI) was obtained by gel permeation chromatography (GPC), indicating that the molecular weight distribution was narrow and the polymerization was well controlled. The lower critical solution temperatures (LCST) for the aqueous solutions of ZnTHPP-PAM were generated by using turbidimetry method. The result exhibited lower value as compared to that of NIPAM homopolymer, which was arose from the incorporation of the hydrophobic porphyrin core. The photocatalytic activity of ZnTHPP-PAM was verified by the degradation of Methylene Blue in the presence of hydrogen peroxide under visible light."

According to the news reporters, the research concluded: "It was worth noting that the catalytic efficiency was higher at the LCST of the polymer, which benefited to the reuse of the photocatalyst."

For more information on this research see: Synthesis of star poly(N-isopropylacrylamide) with end-group of zinc-porphyrin via ATRP and its photocatalytic activity under visible light. Journal of Photochemistry and Photobiology A-Chemistry, 2014;283():38-44. Journal of Photochemistry and Photobiology A-Chemistry can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Biological Factors).

Our news correspondents report that additional information may be obtained by contacting N.N. Qiu, Chinese Academy Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, People's Republic of China. Additional authors for this research include Y.H. Li, S.L. Han, G.H. Cui, T. Satoh, T. Kakuchi and Q. Duan.

Keywords for this news article include: Asia, Changchun, Porphyrins, Photocatalyst, Nanotechnology, Photocatalytic, Biological Factors, Biological Pigments, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Life Science Weekly


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