An optoelectronic nose: "Seeing" smells by means of colorimetric sensor arrays
An optoelectronic nose: "Seeing" smells by means of colorimetric sensor arrays
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DOI：
10.1557/mrs2004.209
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发表时间：
2004-10-01
期刊：
影响因子：
5
通讯作者：
Suslick, KS
中科院分区：
文献类型：
--
作者：
Suslick, KS
描述了一种利用化学响应染料薄膜作为比色传感器阵列的气味和挥发性有机化合物（VOCs）的通用传感器的新方法。这种光电“鼻子”通过使用多种染料阵列（其颜色根据全范围的分子间相互作用而变化），在可以轻松数字成像的简单设备中提供了对气味剂的巨大区分能力。高灵敏度（ppb）已被证明用于检测生物重要的分析物，如胺，羧酸和硫醇。通过适当选择染料和基底，可以使阵列基本上对湿度的变化不敏感。
A new approach to general sensors for odors and volatile organic compounds (VOCs) using thin films of chemically responsive dyes as a colorimetric sensor array is described. This optoelectronic "nose," by using an array of multiple dyes whose colors change based on the full range of intermolecular interactions, provides enormous discriminatory power among odorants in a simple device that can be easily digitally imaged. High sensitivities (ppb) have been demonstrated for the detection of biologically important analytes such as amines, carboxylic acids, and thiols. By the proper choice of dyes and substrate, the array can be made essentially nonresponsive to changes in humidity.