Cation-selective color sensors composed of ionophore-phospholipid-polydiacetylene mixed vesicles

被引:210
作者
Kolusheva, S [1 ]
Shahal, T [1 ]
Jelinek, R [1 ]
机构
[1] Ben Gurion Univ Negev, Dept Chem, IL-84105 Beer Sheva, Israel
关键词
D O I
10.1021/ja9924288
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Supramolecular assemblies of vesicles composed of ionophores and phospholipids embedded in a matrix of polymerized diacetylene [PDA] lipids are shown to undergo visible color changes in the presence of ions in solution. The blue-to-red color transitions of the vesicles are directly related to binding of the cations to the ionophores, and their association with the lipids. The system detects cations in submillimolar concentrations and demonstrates a significant ionic selectivity, in particular between the physiologically important ions Na+ and K+.
引用
收藏
页码:776 / 780
页数:5
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