pH-induced spontaneous vesicle formation from NaDEHP

被引:30
作者
Chen, WJ
Li, GZ [1 ]
Zhou, GW
Zhai, LM
Li, ZM
机构
[1] Shandong Univ, Key Lab Colloid & Interface Chem, State Educ Min, Jinan 250100, Peoples R China
[2] Shandong Inst Light Ind, Dept Light Chem, Jinan 250100, Peoples R China
[3] Jinan Univ, Dept Chem, Jinan 250012, Peoples R China
关键词
D O I
10.1016/S0009-2614(03)00733-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A new pH-induced vesicle composed of single surfactant, sodium bis-(2-ethyl hexyl) phosphate (NaDEHP), was prepared. Spontaneous vesicles form by varying the initial pH value from 6.0 to 3.0 in the NaDEHP aqueous solution which has been demonstrated by negative-staining transmission electronic microscopy (TEM) and dynamic light scattering (DLS) methods. The monodispersity of the vesicle system is quite well and the polydispersities are almost lower than 0.10. The vesicle formation is the consequence of charged and uncharged surfactant molecules coexisting at a certain pH values that form dimers through hydrogen bond, which have the appropriate geometry structure to engender bilayer vesicle. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:482 / 486
页数:5
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