高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (5): 937.

• 研究论文 • 上一篇    下一篇

三嵌段共聚物在气-液界面的有序组装

王刚, 魏莉, 洪霞, 汪大洋, 杨文胜, 刘凤岐, 李铁津, 白玉白   

  1. 吉林大学化学学院, 长春 130023
  • 收稿日期:2000-06-22 出版日期:2002-05-24 发布日期:2002-05-24
  • 通讯作者: 白玉白(1941年出生),男,教授,博士生导师,从事凝聚态物质的光物理与光化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29773017)资助.

Ordered Assembly of Triblock Copolymer on Air-water Interface

WANG Gang, WEI Li, HONG Xia, WANG Da-Yang, YANG Wen-Sheng, LIU Feng-Qi, LI Tie-Jin, BAI Yu-Bai   

  1. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2000-06-22 Online:2002-05-24 Published:2002-05-24

摘要: 将氢化的苯乙烯(PS)/丁二烯(PB)/苯乙烯(PS)三嵌段共聚物(SEBS)磺化,得到磺化的SEBS(S-SEBS),在水亚相上铺展了S-SEBS的Langmuir膜,研究其π-A特性.制备S-SEBS的Langmuir-Blodgett(LB)膜,用原子力显微镜(AFM)对其表面形态进行了研究,并以芘作为荧光探针研究了溶液和膜中S-SEBS聚集态的变化.研究结果表明,S-SEBS在气-液界面可以形成由两亲性的纳米小球组装而成的有序的二维和三维的纳米结构.对纳米结构形成的机理进行了初步分析.

关键词: S- SEBS, LB膜, 纳米结构, 荧光探针

Abstract: Sulfonated hydrogenated styrene-butadiene-styrene triblock copolymer(S-SEBS) was prepared by reaction of hydrogenated styrene-butadiene-styrene triblock copolymer(SEBS) with acetic anhydride and sulphuric acid.The assembly of S-SEBSon air-water interface was studied by using Langmuir film balance.Langmuir-Blogett(LB) film of S-SEBS was prepared and investigated by atomic force microscopy (AFM) in non-contact mode.The aggregations of S-SEBSin solution and in LBfilms were studied by fluorescence spectroscopy by using pyrene as fluorescence probe.The experimental results show that the ordered 2D and 3D-nanostructures composed of amphiphilic nanospheres have been obtained on the air-water interface.Apossible mechanism for the formation of the nanostructures is proposed.

Key words: S-SEBS, Langmuir-Blogett film, Nanostructures, Fluorescence probe

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