高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (12): 2500.

• 研究论文 • 上一篇    下一篇

四-(4-苯基磺酸基)卟啉在反相微乳内相中的聚集行为

张立岩,李岩,赵莉芝,刘学,王鑫,马如江,安英丽,史林启   

  1. 南开大学高分子化学研究所, 功能高分子材料教育部重点实验室, 天津 300071
  • 收稿日期:2010-02-03 修回日期:2010-03-31 出版日期:2010-12-10 发布日期:2010-12-06
  • 通讯作者: 史林启 E-mail:shilinqi@nankai.edu.cn
  • 作者简介:史林启, 男, 博士, 教授, 博士生导师, 主要从事功能高分子方面的研究.
  • 基金资助:

    国家自然科学基金(批准号:  20774051, 50625310)资助.

Aggregation Behavior of Tetrakis(4-sulfonatophenyl)porphyrin in the Inner Water Pool of Inverse Microemulsions

ZHANG Li-Yan, LI Yan, ZHAO Li-Zhi, LIU Xue, WANG Xin, MA Ru-Jiang, AN Ying-Li, SHI Lin-Qi*   

  1. Key Laboratory of Functional Polymer Materials, Ministry of Education, Institute of Polymer Chemistry, Nankai University, Tianjin 300071, China
  • Received:2010-02-03 Revised:2010-03-31 Online:2010-12-10 Published:2010-12-06
  • Contact: SHI Lin-Qi E-mail:shilinqi@nankai.edu.cn
  • About author:史林启, 男, 博士, 教授, 博士生导师, 主要从事功能高分子方面的研究.
  • Supported by:

    National Natural Science Foundation of China;National Natural Science Foundation of China

PDF (PC)

被引次数

5

摘要： 本文系统研究了四-(4-苯基磺酸基)卟啉(TPPS)在由聚乙二醇辛基苯基醚（TX-100）构筑的反相微乳液内相中的聚集行为。通过改变反相微乳水相液滴的pH值、粒径及TPPS的浓度，发现在反相乳液内相中TPPS的表观pKa明显小于在水溶液中的pKa（4.9），并且，TPPS的表观pKa随着水相液滴粒径的减小而降低；当水相液滴的pH > pKa时，TPPS以去质子化单体H2TPPS4-形式存在，而当pH < pKa时，TPPS以质子化单体H4TPPS2-和J-聚集两种形式存在，并且TPPS浓度的增大，促进了H4TPPS2-向J-聚集转变；在pH值不变的条件下，随着水相液滴粒径的增大，TPPS的存在状态由H2TPPS4-向H4TPPS2-转变，并形成J-聚集。

关键词: TPPS, 软受限空间, 非离子型表面活性剂, 反相微乳液

Abstract: TX-100/n-hexanol/water/cyclohexane inverse microemulsions have been used to entrap tetrakis(4-sulfonatophenyl)porphyrin (TPPS). The aggregation behaviors of TPPS in the inner phase of nonionic W/O inverse have been investigated on changing pH, size of the microemulsions water pool and the concentration of porphyrin. The apparent pKa of TPPS in microemulsions have been found to be much lower than that in open aqueous solution, and exhibit a decrease on decreasing the water pool dimension. Deprotonized TPPS was prevalently presented when pH > pKa. While J-aggregates and protonized TPPS are the main species existed when pH < pKa, and more protonized TPPS self-assemble into J-aggregates on increasing the concentration of TPPS. At fixed pH, the deprotonized TPPS tend to become protonized and self-assemble into J-aggregates on increasing the inner water pool dimension.

Key words: TPPS, soft microconfinement, nonionic surfactant, inverse microemulsions

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