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Fabrication of Chemical Sensors for the Detection of Acidic Gas using 1,3-bisdicyanovinylindane  

Song, Hwan-Moon (Department of Chemical Engineering, Chungnam National University)
Park, Young-Min (Department of Organic Materials and Textile System Engineering, Chungnam National University)
Son, Young-A (Department of Organic Materials and Textile System Engineering, Chungnam National University)
Lee, Chang-Soo (Department of Chemical Engineering, Chungnam National University)
Publication Information
Korean Chemical Engineering Research / v.46, no.1, 2008 , pp. 184-188 More about this Journal
Abstract
This study presented simple and efficient fabrication of chemical sensors for the detection of acidic gas using 1,3-bisdicyanovinylindane as an indicator because it can be promising materials having property of the rapid color change according to the variation of pH. The dissociation of proton and dye in acidic condition as changing of ion pairs give rise to dramatically change the absorbance intensity of 1,3-bisdicyanovinylindane, which can be easily applied to the development of chemical sensors. In addition, indicator dyes having negatively charge in aqueous phase can be easily fabricated using layer-by-layer (LBL) methods by way of electrostatic interaction. For the proof of concept, we demonstrated the abrupt presentation of skeleton symbol on the chemical sensor, which could be resulted from the reaction of 1,3-bisdicyanovinylindane as background color with acidic gas. Thus, the rapid appearance of symbol will induce user's caution under the emergency condition. The presented chemical gas sensor using 1,3-bisdicyanovinylindane have strong advantages. First, the fabrication process of gas sensor was very simple and low-cost. Secondly, sensors reacted by acidic gas could be reused for several times. Finally, the chemical gas sensor would be environmentally friend, which can be a basic tool for the realization of eco-organic sensor device.
Keywords
1,3-bisdicyanovinylindane; Gas Sensor; Polyelectrolyte Multilayer; Microstamping; Soft-Lithography;
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Times Cited By KSCI : 1  (Citation Analysis)
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