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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (18): 1876-1880. 上一篇    下一篇

研究论文

超支化聚(酰胺-酯)溶液中的5,10,15,20-四(4-羟基苯基)卟啉聚集行为的研究

温昕，王素娟，高保祥，巴信武   

  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 E-mail:wsjxjc@126.com
  • 基金资助:

    国家自然科学基金项目（批准号：20574010）

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 E-mail:wsjxjc@126.com

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1677

被引次数

6

采用紫外可见光谱、荧光光谱研究5,10,15,20-四(4-羟基苯基)卟啉(THPP)在超支化聚(酰胺-酯)(HBP)溶液中聚集行为的变化. 结果表明: 中性溶液中, 随HBP浓度升高, 卟啉Soret带最大吸收峰从434 nm蓝移至425 nm, 且吸收峰强度逐渐增强, 出现卟啉的精细结构, 表明HBP有效破坏了THPP的J-型聚集体; 酸性介质中, 质子化H4THPP2＋的Soret吸收带位于447 nm, 加入HBP后蓝移至424 nm处, 表明游离碱卟啉(H2THPP)的出现, 说明THPP在HBP酸性介质中呈现平衡状态: H2THPP H4THPP2＋; 在碱性介质中, THPP上四个酚羟基变成氧负离子, 亲水性增强, 聚合物HBP的加入, 吸收和荧光强度逐渐增强.

关键词: 超支化聚(酰胺-酯), 5,10,15,20-四(4-羟基苯基)卟啉, 聚集行为

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