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Development of sensor surface with recognition of molecular substructure
Kyushu University Graduate School of Systems Life Sciences.
Kyushu University Graduate School of Information Science and Electrial Engineering.
Kyushu University Graduate School of Information Science and Electrial Engineering.
Asko Cylinda AB .
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2008 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 130, no 1, 330-337 p.Article in journal (Refereed) Published
Abstract [en]

A biological olfaction system is one of the highest performance chemical sensing systems for low-molecular-weight compounds. An ability of recognizing a various molecular properties based on their structures is essential for a biological odor recognition process. For the development of a sensor mimicking the olfactory system, we have formed benzene-patterned self-assembled monolayer (SAM) on the sensor surface using SAMs with nanostructure that serves as adsorption sites for benzene ring, which is representative substructure of aromatics. The structure of the benzene-patterned SAM surface was analyzed by contact-angle measurement, ellipsometry, cyclic voltammetry (CV) and atomic force microscopy (AFM). Moreover, the electrodes evaluated as sensor surfaces with cyclic surface-polarization impedance (cSPI) sensor that measures changes in impedance of the electrode surface by adsorption of substances. The results of cSPI indicated the benzene-patterned SAM surface could distinguish benzene by recognizing of the hydrophobicity and the molecular size. © 2007 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2008. Vol. 130, no 1, 330-337 p.
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-44512DOI: 10.1016/j.snb.2007.08.027Local ID: 76939OAI: diva2:265374
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2015-09-18

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