Selective gas nanosensors with multisize CdSe nanocrystal/polymer composite films and dynamic pattern recognition

被引：46

作者：

Potyrailo, RA ^{[1
]}

Leach, AM ^{[1
]}

机构：

[1] GE Co, Chem & Biol Sensing Lab, Mat Anal & Chem Sci, Global Res Ctr, Niskayuna, NY 12309 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 13期

关键词：

D O I：

10.1063/1.2190272

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We introduce a concept for selective chemical sensing based on different size semiconductor nanocrystals incorporated into a preselected polymer matrix. When CdSe nanocrystals of different sizes (2.8 and 5.6 nm diam) were incorporated into a polymer film, each size of the nanocrystals demonstrated a distinct photoluminescence response pattern (excitation at lambda=407 nm) upon exposure to polar and nonpolar vapors in air at atmospheric pressure. When this composite response was processed using a multivariate analysis, a single film with different size CdSe nanocrystals served as a selective sensor. (c) 2006 American Institute of Physics.

引用

页数：3

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