Selective Detection of Calcium Cations on Macromolecular Langmuir Monolayer and Langmuir-Schaefer Films

被引：3

作者：

Park, Jin Young ^{[1
]}

Park, Yushin ^{[2
]}

Advincula, Rigoberto C. ^{[2
,3
]}

机构：

[1] Jungwon Univ, Dept Renewable Energy, Goesan Gun 367805, Chungbuk, South Korea

[2] Univ Houston, Dept Chem, Houston, TX 77204 USA

[3] Case Western Reserve Univ, Dept Macromol Sci & Engn, Cleveland, OH 44106 USA

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2013年 / 13卷 / 03期

基金：

美国国家科学基金会;

关键词：

Calcium Cation; Langmuir-Schaefer Film; Chemosensor; Complexation; Quartz Crystal Microbalance; QUARTZ-CRYSTAL; BLODGETT-FILMS; CROWN-ETHER; METAL-IONS; CHEMOSENSORS; SENSOR; FLUORESCENT;

D O I：

10.1166/jnn.2013.6874

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, we report the interfacial Langmuir monolayer behavior and surface morphological features of a dendronic terthiophene linked via a tetraethylene glycol moiety (3T503T) and its complexation with calcium cations. Surface pressure-mean molecular area (pi-A) isotherms show distinct behavior due to the secondary interaction of cations with the ionophore units. Furthermore, two Langmuir-Schaefer (LS) films with and without calcium cations exhibited significantly different surface morphological features from atomic force microscopy (AFM) imaging. Quartz crystal microbalance (QCM) measurements reveal changes in frequency and resistance enabling selective sensing of calcium cations on the LS films. Thus, well-organized 3T503T LS films on the solid substrates are potential candidates for highly selective chemosensing.

引用

页码：2201 / 2205

页数：5

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