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学科主题: 物理有机化学
题名: Aggregation of TPPS on spreading films of achiral cationic amphiphiles: Effect of the charge and rigid spacer on the morphologies and supramolecular chirality
其他题名: 非手性正离子两亲物在扩散薄膜表面的簇集:电荷和刚性连接基团对介观结构和超分子手性的影响
作者: Zhang L(张利) ; Jiao TF(焦剔峰) ; Shao XB(邵学斌) ; Li ZT(黎占亭) ; Liu MH(刘鸣华)
通讯作者: 刘鸣华
刊名: Colloid Surf. A-Physicochem. Eng. Asp.
发表日期: 2006
卷: 284, 页:130-134
收录类别: SCI
部门归属: 北京化学所; 上海有机所
英文摘要: Aggregation of an anionic TPPS (tetrakis(4-sulfonatophenyl)porphine) on the spreading films of cationic amphiphiles containing one, two and four positive charges at the air/water interface were investigated. The positive charge centers in these amphiphiles were separated by a rigid spacer. It was found that TPPS in the subphase could aggregate onto the spreading films as J-aggregate. The complex films formed in situ at the air/water interface could be transferred onto solid substrate by a horizontal lifting method. Although the amphiphiles and the TPPS were achiral, CD signals were detected for the complex films. A possible helical sense of the TPPS stacked in the complex film was suggested to be responsible for the supramolecular chirality of the multilayer films. The charge distributions and spacers have great influence on the CD intensity as well as their split and the surface morphologies. AFM measurements revealed nanofiber structures in the surface morphologies for the complex films of TPPS with amphiphiles having one or two positive charges, while nanorod morphologies were observed for that with four positive charges. It was suggested that the charge centers in the amphiphiles limited the aggregation of TPPS and the interactions between the adjacent J-aggregates. (c) 2005 Elsevier B.V. All rights reserved.
语种: 英语
相关网址: 查看原文
WOS记录号: WOS:000238791800025
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/20853
Appears in Collections:物理有机化学研究室_期刊论文

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Recommended Citation:
Zhang L,Jiao TF,Shao XB,et al. Aggregation of TPPS on spreading films of achiral cationic amphiphiles: Effect of the charge and rigid spacer on the morphologies and supramolecular chirality[J]. Colloid Surf. A-Physicochem. Eng. Asp.,2006,284:130-134.
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