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学科主题: 物理有机化学
题名: A new type of deaggregators, the bolaamphiphilic DeAgrs. Observations of the dependence of deaggregating ability on aggregator concentration and solvent aggregating power
其他题名: A new type of deaggregators, the bolaamphiphilic DeAgrs. Observations of the dependence of deaggregating ability on aggregator concentration and solvent aggregating power
作者: Zhou QZ(周其中) ; Shi JL(史济良) ; Jiang XK(蒋锡夔) ; Li ZT(黎占亭)
通讯作者: 黎占亭
刊名: Chin. J. Chem.
发表日期: 2002
卷: 20, 期:11, 页:1279-1286
收录类别: SCI
部门归属: 中国科学院上海有机化学研究所物理有机化学实验室
英文摘要: Four new amphiphilic molecules, i.e., the bolaamphiphiles ω-trimethylamino n-hexadecanoate deAgr 16), n-dodecanoate (deAgr 12), n-undecanoate (deAgr 11), and n-octanoate (deAgr 8) were synthesized. Their ability as deaggregators to break up the aggregating systems of hexadecyl β-naphthoate (a16) and dodecyl β-naphthoate (A12) in dioxanewater binary solvent systems was investigated in a number of solvent systems and at different A16 and A12 concentrations. The results reveal that this new type of bolaamphiphilic molecules appears to be one of the most efficient deaggregators reported, which, at very low concentrations, can effectively break up the aggregating systems of highly concentrated A16 and A12. It is also found that bolaamphiphiles with longer aliphatic chains possess greater deaggregating ability. However, when the overall concentrations of A16 and A12 are very low but still above their critical aggregating concentration, these bolaamphiphilic molecules lose their deaggregating power and tend to coaggregate with the aggregated A16 or A12 molecules. The quite efficient deaggregating abilityof the longchain bolaamphiphiles (deAgr 16 and deAgr 12), as compared to the short-chain deAgr 8, has been ascribed to their dynamic switch-on/switch-off behavior involving coiled-up and uncoiled conformations of their long aliphatic chains.
语种: 英语
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WOS记录号: WOS:000179210800022
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/12622
Appears in Collections:物理有机化学研究室_期刊论文

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Recommended Citation:
Zhou QZ,Shi JL,Jiang XK,et al. A new type of deaggregators, the bolaamphiphilic DeAgrs. Observations of the dependence of deaggregating ability on aggregator concentration and solvent aggregating power[J]. Chin. J. Chem.,2002,20(11):1279-1286.
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