Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (18): 1876-1880. Previous Articles     Next Articles

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  1. (河北大学化学与环境科学学院 保定 071002)
  • 投稿日期:2009-09-07 修回日期:2010-12-25 发布日期:2010-05-18
  • 通讯作者: 王素娟
  • 基金资助:


Study of the Aggregation of Meso-tetrakis(4-hydroxyphenyl) porphyrin in the Hyperbranched Poly(amide-ester) Solution

WEN Xin, WANG Su-Juan, GAO Bao-Xiang, BA Xin-Wu   

  1. (College of Chemistry & Environmental Science, Hebei University, Baoding 071002)
  • Received:2009-09-07 Revised:2010-12-25 Published:2010-05-18
  • Contact: WANG Su-Juan

The aggregation behavior of meso-tetrakis(4-hydroxyphenyl) porphyrin (THPP) in hyperbranched poly(amide-ester)s (HBP) solution was investigated by UV-vis and fluorescence spectra. The absorption at 434 nm in THPP was blue-shifted to 425 nm, and the absorption intensity increased with the addition of HBP. The results showed that the J-type aggregation of THPP was effectively distacked by hyperbranched poly(amide-ester) in the neutral phosphate buffer solution. In acid solution, the hypsochromic shift from 447 nm to 424 nm exhibited the presence of H2THPP with the addition of HBP, which showed the equilibrium H2THPP H4THPP2+. In basic solution, the hydroxy in THPP resulted into the oxide ions, which improved the solubility in water. The absorption and FL intensity of THPP increased with addition of HBP.

Key words: hyperbranched poly(amide-ester)s, meso-tetrakis(4-hydroxyphenyl) porphyrin, aggregation behavior