Simultaneous Monitoring of Humidity and Chemical Changes Using Quartz Crystal Microbalance Sensors Modified with Nano-thin Films
Simultaneous Monitoring of Humidity and Chemical Changes Using Quartz Crystal Microbalance Sensors Modified with Nano-thin Films
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DOI：
10.2116/analsci.27.253
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发表时间：
2011-03
影响因子：
1.6
通讯作者：
R. Selyanchyn;S. Korposh;S. Wakamatsu;Seung-Woo Lee
中科院分区：
文献类型：
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作者：
R. Selyanchyn;S. Korposh;S. Wakamatsu;Seung-Woo Lee
利用纳米薄膜修饰的石英晶体微天平（QCM）电极开发了一种用于测量显著环境变化（烟雾、湿度、有害物质释放）的系统。采用逐层沉积的方法在电极表面沉积纳米厚度的敏感涂层。用四-（4-磺基苯基）卟啉（TSPP）（或其锰衍生物MnTSPP）和聚（二烯丙基二甲基氯化铵）（PDDA）的自组装交替层修饰QCM电极。QCM传感器，这是以前报道的湿度传感的目的，揭示了一个很高的可能性，以识别显着的环境变化。通过对获得的数据进行差分信号分析，可以确定环境变化的起源。传感器对湿度变化、有害气体（氨）或香烟烟雾暴露表现出不同的反应。甚至还没有定性分析;已经表明，可以使用所获得的结果来建立用于监测烟雾或危险材料释放的通风触发器或警报器。
Quartz crystal microbalance (QCM) electrodes modified with nano-thin films were used to develop a system for measuring significant environment changes (smoke, humidity, hazardous material release). A layer-by-layer approach was used for the deposition of sensitive coatings with a nanometer thickness on the electrode surface. The QCM electrode was modified with self-assembled alternate layers of tetrakis-(4-sulfophenyl) porphine (TSPP) (or its manganese derivative, MnTSPP) and poly(diallyldimethylammonium chloride) (PDDA). The QCM sensors, which had been reported previously for humidity sensing purposes, revealing a high possibility to recognize significant environmental changes. Identifying of the origin of environmental change is possible via differential signal analysis of the obtained data. The sensors showed different responses to humidity changes, hazardous gas (ammonia) or cigarette smoke exposure. Even qualitative analysis is not yet available; it has been shown that ventilation triggers or alarms for monitoring smoke or hazardous material release can be built using the obtained result.