Polyelectrolyte and molecular host ion self-assembly to multilayer thin films: An approach to thin film chemical sensors

被引：70

作者：

Yang, X ^{[1
]}

Johnson, S ^{[1
]}

Shi, J ^{[1
]}

Holesinger, T ^{[1
]}

Swanson, B ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1997年 / 45卷 / 02期

关键词：

polyelectrolyte; calixarene; self-assembly; thin-film Sensor;

D O I：

10.1016/S0925-4005(97)00274-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Multilayer molecular films of polyelectrolyte/calixarene and polyelectrolyte/cyclodextrin hosts were fabricated by alternating adsorption of charged species in aqueous solutions onto a substrate (quartz or silicon wafer). This layer-by-layer molecular deposition approach has been successfully used to integrate molecular recognition reagents into polymer films as chemically selective layers for surface acoustic wave (SAW) chemical sensing applications. The resulting sensors have high sensitivity and selectivity to the organic vapors studied. The films were characterized with SEM, infrared and W-vis spectroscopy, and monitored by SAW devices. These measurements revealed that the deposition process is highly reproducible and the resulting films are uniform and stable. (C) 1997 Elsevier Science S.A.

引用

页码：87 / 92

页数：6