화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.18, No.5, 496-503, May, 2010
DOI10.1007/s13233-010-0502-4  Export Citation
Synthesis of Polymeric Phthalocyanine Sulfonate Photosensitizer and Its Photodegradation on Rhodamine B in Aqueous Medium
Peng Zhao†, Je-wan Woo, Yong-sung Park, Yenan Song1, and Fushi Zhang2
  • Department of Industrial Chemistry, College of Natural Science, Sangmyung University, Seoul, 110-743, Korea
  • 1Department of Applied Chemistry, School of Science, Harbin Institute of Technology, Harbin, 150001, P.R. China
  • 2The Key Lab of Organic Photoelectrons and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, P.R. China
E-mail:
Novel phthalocyanine sulfonate (H2PPcSx) was synthesized from the sulfonation of a steric polymeric phthalocyanine and investigated as a photocatalyst in a homogenous system. The molecular weight of H2PPcSx was characterized as 9213-11692 by MALDI-TOF MS, classified as an oligomer with a 14-18 degree of polymerization. The electronic spectrum indicated a less aggregative tendency of H2PPCSx than the usual monomeric phthalocyanine photocatalyst. Efficient photodegradation of butyl Rhodamine B (bu Rh B) catalyzed by H2PPcSx was achieved in a homogenous solution; the spectral character indicated that decomposition occurred on the benzene ring in the Rh B molecular. For a 50 mg L^(-1) bu Rh B solution, the percentage degradation reached 95% in 4 h using 100 mg H2PPcSx as a photocatalyst. A mechanism involving the participation of both singlet oxygen and radicals was established for the photodegradation.
Keywords:polyphthalocyanine;photocatalysis;homogenous catalysis;Rhodamine;singlet oxygen
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