The Formation and Performance of Solid Supported Bilayer Lipid Membranes Modified with Crown Ethers

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (8): 1237.

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The Formation and Performance of Solid Supported Bilayer Lipid Membranes Modified with Crown Ethers

HE Yu-E¹, XIE Ming-Gui¹, ZHAO Yu-Cong¹, TIEN Xin-Di²

1. Department of Chemistry, Sichuan University, Chengdu, 610064;
2. Department of Physiology, Michigan State University, East Lansing, MI 48824-1101, U.S.A.

Received:1994-08-27 Revised:1995-02-15 Online:1995-08-24 Published:1995-08-24

Abstract

Abstract: Self-assembly solid supported bilayer lipid membranes(S-BLMs)modified with crown ethers were formed on metalic wire.The stability and the electrochemical characteristics of the s-BLMs depended on the variety of metalic wire,organic solvent,lipids and molecular structures of crown ethers. The membrane potentials of the s-BLMs prepared with stainless steel wire in mixed solution of squalane saturated cholesterol and crown ether in CHCl₃were determined.The cavity size and negative electricity of the ether ring of crown ethe,r molecules are favorable to the selective complexation with metal cations(M⁺,e.g. Li⁺Na⁺,K⁺) in the aqueous solution. The change of[M⁺](10^-4-10^-1mol/L)would result in a Nernst corresponding in the membrane potential.

Key words: Bilayer lipid membranes, Crown ether, Ion sensor

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HE Yu-E, XIE Ming-Gui, ZHAO Yu-Cong, TIEN Xin-Di. The Formation and Performance of Solid Supported Bilayer Lipid Membranes Modified with Crown Ethers[J]. Chem. J. Chinese Universities, 1995, 16(8): 1237.

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The Formation and Performance of Solid Supported Bilayer Lipid Membranes Modified with Crown Ethers

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