溶液中寡聚表面活性剂的聚集行为与功能
详细信息 查看官网全文
- 英文论文题名：Aggregation Behavior and Unique Performances of Oligomeric Surfactants in Aqueous Solution
- 论文作者：范雅珣 ; 侯研博 ; 伍春娴 ; 何承前 ; 周成成 ; 王毅琳
- 英文论文作者：Yaxun Fan ; Yanbo Hou ; Chunxian Wu ; Chenqian He ; Chengcheng Zhou ; Yilin Wang ; Institute of Chemistry ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院化学研究所;
- 论文关键词：寡聚表面活性剂 ; 自组装 ; 水溶液 ; 功能
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：O647.2
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：147k
- 原文格式：D
- 会议级别：全国
摘要
近年来,我们设计合成了具有星状连接基团的三聚、四聚和六聚表面活性剂,并研究了其在水溶液中的聚集行为。研究发现,寡聚度和连接基团的结构对寡聚表面活性剂的聚集行为有重要影响,分子构象的变化是导致寡聚表面活性剂独特聚集体转化规律的重要因素~1。这些星状寡聚表面活性剂为构筑多种结构的聚集体结构提供了可能,特别是星状四聚、六聚寡聚表面活性剂在远远低于其临界聚集浓度的条件下就可以通过伸展的分子构象和疏水链间的疏水缔合形成网状聚集体。进而我们的研究表明,这些星状寡聚表面活性剂具有许多优越的性能~2:能够在固体表面形成致密排布的吸附层和球状聚集体,从而显著降低固体表面的摩擦系数;能够在极低的浓度条件下解聚淀粉多肽形成的成熟长纤维;能够有效调控聚合物的形貌;在极低的浓度条件下就具有很强的杀菌活性等。
In recent years,we synthesized cationic trimeric,tetrameric and hexameric quaternary ammonium surfactants with a star-shaped spacer and studied their self-assembly in aqueous solution.It was found that both the degree of oligomerization and the nature of spacer groups have important influences on the aggregation behavior of oligomeric surfactants.The molecular conformational change is the key factor in the unique aggregate transitions of oligomeric surfactants.They provide great possibilities of constructing various aggregate structures and open a new approach to affect the aggregate structures by adjusting the molecule configurations.In particular the tetrameric and hexameric surfactants form large network-like premicellar aggregates at very low concentration far below their critical aggregation concentrations.They have been proved to show unique performances in surface modification,amyloid disaggregation,adjustment of polymer morphology,antimicrobial activity and so on.
In recent years,we synthesized cationic trimeric,tetrameric and hexameric quaternary ammonium surfactants with a star-shaped spacer and studied their self-assembly in aqueous solution.It was found that both the degree of oligomerization and the nature of spacer groups have important influences on the aggregation behavior of oligomeric surfactants.The molecular conformational change is the key factor in the unique aggregate transitions of oligomeric surfactants.They provide great possibilities of constructing various aggregate structures and open a new approach to affect the aggregate structures by adjusting the molecule configurations.In particular the tetrameric and hexameric surfactants form large network-like premicellar aggregates at very low concentration far below their critical aggregation concentrations.They have been proved to show unique performances in surface modification,amyloid disaggregation,adjustment of polymer morphology,antimicrobial activity and so on.
引文
[1](a)Wu,C.;Hou,Y.;Deng,M.;Huang,C.;Yu,D.;Xiang,J.;Liu,Y.;Li,Z.;Wang,Y.L.Langmuir 2010,26:7922.(b)Hou,Y.;Han,Y.;Deng,M.;Xiang,J.;Wang,Y.L.Langmuir 2010,26:28.(c)Fan,Y.;Hou,Y.;Xiang,J.;Yu,D.;Wu,C.;Tian,M.;Han,Y.;Wang,Y.L.Langmuir 2011,27:10570.
[2](a)Hou,Y.;Cao,M.;Deng,M.;Wang,Y.L.Langmuir 2008,24:10572.(b)He,C.;Hou,Y.;Han,Y.;Wang,Y.L.Langmuir 2011,27:4551.(c)Fan,Y.;Wu,C.;Wang,M.;Wang,Y.L.;Thomas,R.K.Langmuir 2014,30:6660.(d)Wang,M.;Wu,C.;Tang,Y.;Fan,Y.;Han,Y.;Wang,Y.L.Soft Matter 2014,10:3432.(e)Zhou,C.;Wang,F.;Chen,H.;Li,M.;Qiao,F.;Liu,Z.;Hou,Y.;Wu,C.;Fan,Y.;Liu,L.;Wang,S.;Wang,Y.L.ACS Appl.Mater.Interfaces 2016,8:4242.
[2](a)Hou,Y.;Cao,M.;Deng,M.;Wang,Y.L.Langmuir 2008,24:10572.(b)He,C.;Hou,Y.;Han,Y.;Wang,Y.L.Langmuir 2011,27:4551.(c)Fan,Y.;Wu,C.;Wang,M.;Wang,Y.L.;Thomas,R.K.Langmuir 2014,30:6660.(d)Wang,M.;Wu,C.;Tang,Y.;Fan,Y.;Han,Y.;Wang,Y.L.Soft Matter 2014,10:3432.(e)Zhou,C.;Wang,F.;Chen,H.;Li,M.;Qiao,F.;Liu,Z.;Hou,Y.;Wu,C.;Fan,Y.;Liu,L.;Wang,S.;Wang,Y.L.ACS Appl.Mater.Interfaces 2016,8:4242.