Discrimination of Methanol from Ethanol in Gasoline Using a Membrane-type Surface Stress Sensor Coated with Copper(I) Complex
Discrimination of Methanol from Ethanol in Gasoline Using a Membrane-type Surface Stress Sensor Coated with Copper(I) Complex
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DOI：
10.1246/bcsj.20200347
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发表时间：
2021-02-01
影响因子：
4
通讯作者：
Ariga, Katsuhiko
中科院分区：
文献类型：
--
作者：
Nishikawa, Michihiro;Murata, Tomohiro;Ariga, Katsuhiko
我们成功制造了一种新型传感平台，一种膜型表面应力传感器（MSS），涂有铜（I）复合物轴承phen和BINAP配体[Cu（phen）-（（+/-）-BINAP）]PF6（1，phen = 1,10-菲咯啉，BINAP = 2,2'-双（二苯基膦）-1,1'-联萘），用于特定分子传感。基于 Cu(I) 络合物吸附引起的变形产生的机械应力的传导，研究了各种挥发性有机化合物 (VOC) 的检测性能。所制造的传感器器件对多种 VOC 中的甲醇表现出选择性响应。此外，在正己烷和汽油中混合甲醇样品时，在暴露于甲醇时观察到不同的 MSS 信号，并且对乙醇混合物有明显的辨别力。事实上，含有 1% 甲醇的汽油蒸气比含有 20% 乙醇的汽油样品表现出更高的 MSS 响应。汽油和相关石油样品中的甲醇污染是汽车和燃料行业的一个世界范围内的常见问题，需要使用便携式设备通过简单的程序检测甲醇污染物。目前的研究成果将有助于满足这些社会需求。
We successfully fabricated a novel sensing platform, a Membrane-type Surface stress Sensor (MSS) coated with copper(I) complex bearing phen and BINAP ligands, [Cu(phen)-((+/-)-BINAP)]PF6 (1, phen = 1,10-phenanthroline, BINAP = 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl), for specific molecular sensing. Based on the transduction of mechanical stresses derived from sorption-induced deformation of Cu(I) complex, the detection performance of various volatile organic compounds (VOCs) has been investigated. The fabricated sensor devices showed selective responses to methanol over a wide range of VOCs. In addition, distinct MSS signals upon exposure to methanol were observed for mixing samples of methanol in n-hexane and gasoline with clear discrimination of ethanol mixtures. In fact, gasoline vapor with 1% methanol exhibited much higher MSS responses than 20% ethanol containing gasoline samples. Methanol contamination in gasoline and related petroleum samples is a world-wide common problem in the automobile and fuel sectors where detection of methanol contaminants with portable devices by easy procedures is required. The current research results will contribute to fulfilling these social demands.