Development of sensor surface with recognition of molecular substructure
2008 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 130, no 1, 330-337 p.Article in journal (Refereed) Published
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.
IdentifiersURN: urn:nbn:se:liu:diva-44512DOI: 10.1016/j.snb.2007.08.027Local ID: 76939OAI: oai:DiVA.org:liu-44512DiVA: diva2:265374