Abstract
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.
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Zhao, P., Woo, Jw., Park, Ys. et al. Synthesis of polymeric phthalocyanine sulfonate photosensitizer and its photodegradation on rhodamine B in aqueous medium. Macromol. Res. 18, 496–503 (2010). https://doi.org/10.1007/s13233-010-0502-4
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DOI: https://doi.org/10.1007/s13233-010-0502-4