Seeing smells: development of an optoelectronic nose
Seeing smells: development of an optoelectronic nose
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DOI：
10.1590/s0100-40422007000300029
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发表时间：
2007-06-01
期刊：
影响因子：
--
通讯作者：
Nakagaki, Shirley
中科院分区：
文献类型：
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作者：
Suslick, Kenneth S.;Bailey, Daniel P.;Nakagaki, Shirley
综述了多孔膜上一系列化学响应染料的开发及其作为气味和挥发性有机化合物 (VOC) 通用传感器的应用。这些比色传感器阵列 (CSA) 通过使用多种染料阵列充当“光电鼻”，这些染料的颜色变化基于全方位的分子间相互作用。 CSA 在暴露之前和之后进行数字成像，生成的差异图为任何 VOC 或气味混合物提供数字指纹。与之前的电子鼻技术相比，其结果是气味剂的辨别能力大大增加。对于检测具有重要生物学意义的分析物，包括胺、羧酸和硫醇，已证明具有高灵敏度 (ppbv)。由于染料和膜的疏水性，该阵列基本上对湿度变化没有响应。
The development of an array of chemically-responsive dyes on a porous membrane and in its use as a general sensor for odors and volatile organic compounds(VOCs) is reviewed. These colorimetric sensor arrays (CSA) act as an "optoelectronic nose" by using an array of multiple dyes whose color changes are based on the full range of intermolecular interactions. The CSA is digitally imaged before and after exposure and the resulting difference map provides a digital fingerprint for any VOC or mixture of odorants. The result is an enormous increase in discriminatory power among odorants compared to prior electronic nose technologies. For the detection of biologically important analytes, including amines, carboxylic acids, and thiols, high sensitivities (ppbv) have been demonstrated. The array is essentially non-responsive to changes in humidity due to the hydrophobicity of the dyes and membrane.