Homeotropic orientation behavior of nematic liquid crystals induced by copper ions

被引：14

作者：

Li, Guang ^{[1
]}

Gao, Bin ^{[1
]}

Yang, Meng ^{[1
]}

Chen, Long-Cong ^{[1
]}

Xiong, Xing-Liang ^{[1
]}

机构：

[1] Chongqing Med Univ, Lab Bioengn, Chongqing 400016, Peoples R China

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2015年 / 130卷

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Liquid crystal; Homeotropic orientation; Copper ions; Surface; DIMETHYL METHYLPHOSPHONATE; BINDING EVENTS; METAL-SALTS; SURFACES; SENSORS; MICROCANTILEVER; TRANSITIONS; RESPONSES; ASSAYS;

D O I：

10.1016/j.colsurfb.2015.04.027

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

A homeotropic ordering film of nematic liquid crystal (LC) induced by copper ions (Cu2+) had been developed. The Cu(ClO4)(2) was directly spin-coated on the glass substrate without any other chemical modification. A homeotropic orientation of LC thin-film was generated by the interfacial chemical interaction between nitrile-containing LC and copper ions on the surface. Results showed that an appropriate density of Cu2+ could shorten the response time of orientation, but a shelf-time was prolonged. The LC film fabrication not only offered a simple process, but also presented a great repeatability to detect organophosphonates (DMMP). This study provided guidance for the design of LC films responding to organic molecules as a biosensor. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：287 / 291

页数：5

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