A colorimetric sensor array for organics in water
A colorimetric sensor array for organics in water
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DOI：
10.1021/ja052606z
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发表时间：
2005-08-24
影响因子：
15
通讯作者：
Suslick, KS
中科院分区：
文献类型：
--
作者：
Zhang, C;Suslick, KS
由于高浓度水的潜在干扰，水溶液中有机化合物的分子识别本身就具有挑战性。在这里，我们提出了一种简单的比色传感器阵列，可以探测各种化学特性。通过在疏水膜上印刷疏水染料，可以轻松制备传感器阵列，为溶解在水中的各种有机物（单一化合物和复杂混合物）的识别和定量提供显着的化学选择性。即使在密切相关的有机化合物中也可以轻松区分。浸入水溶液中后，染料阵列在暴露于分析物之前和之后的数字成像提供了颜色变化曲线，该曲线是溶液有机成分的指纹。可轻松识别浓度范围为 0.1 M 至 1 μM 的各种有机水溶液。复杂的混合物不存在固有的困难；例如，使用比色传感器阵列方法可以轻松区分一系列商业软饮料。
Molecular recognition of organic compounds in aqueous solutions is inherently challenging due to the potential interference from the very high concentration of water. Here we present a simple colorimetric sensor array that probes a wide range of chemical properties. By printing hydrophobic dyes on a hydrophobic membrane, sensor arrays are easily prepared that provide substantial chemical selectivity for the identification and quantification of various organics (both single compounds and complex mixtures) dissolved in water. It is possible to differentiate easily even among closely related organic compounds. Upon immersion in aqueous solutions, digital imaging of the dye array before and after exposure to an analyte provide a color change profile that is a fingerprint for the organic components of the solution. Facile identification of a wide variety of aqueous organic solutions is possible over a concentration range of 0.1 M to 1 μM. Complex mixtures present no inherent difficulty; for example, a series of commercial soft drinks were easily distinguished using the colorimetric sensor array approach.