Nano-assembled thin film gas sensors. 1. Ammonia detection by a porphyrin-based multilayer film.

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dc.contributor.author Korposh, Serhiy O.
dc.contributor.author Takahara, Naoki
dc.contributor.author Ramsden, Jeremy J.
dc.contributor.author Lee, Seung-Woo
dc.contributor.author Kunitake, Toyoki
dc.date.accessioned 2008-05-07T12:58:11Z
dc.date.available 2008-05-07T12:58:11Z
dc.date.issued 2006-09
dc.identifier.citation Serhiy O. Korposh, Naoki Takahara, Jeremy J. Ramsden, Seung-Woo Lee, Toyoki Kunitake; Nano-assembled thin film gas sensors. 1. Ammonia detection by a porphyrin-based multilayer film. Journal of Biological Physics and Chemistry, Vol 6 No 3, 2006, pp125-132 en_UK
dc.identifier.issn 1512-0856
dc.identifier.uri http://hdl.handle.net/1826/2529
dc.description.abstract A thin film of porphyrin deposited by the layer-by-layer method is employed as the active element for an optical sensor. The usefulness of this film technology and the resulting nanoscale matrix for the detection of volatile organic compounds (VOCs), aromatics and amine-containing substances has been studied. The sensing principle is based on monitoring the optical changes of the Q band at 700 nm, as induced by the analyte in the electrostatic interaction between tetrakis(4-sulfophenyl)porphine (TSPP) and poly(diallyldimethylammonium chloride) (PDDA) layers. Three thin film samples with different thicknesses were prepared to assess the effect of film thickness on the sensitivity. For ammonia, the sensor shows a linear sensitivity in the concentration range 0–100 ppm and the sensor response was within 30 seconds. Sensor response could be regenerated by rinsing in distilled water. en_UK
dc.language.iso en en_UK
dc.publisher Association of Modern Scientific Investigation en_UK
dc.relation.ispartof www.amsi.ge/jbpc
dc.subject ammonia detection en_UK
dc.subject layer-by-layer en_UK
dc.subject optical fibres en_UK
dc.subject porphyrin en_UK
dc.subject thin film gas sensor en_UK
dc.title Nano-assembled thin film gas sensors. 1. Ammonia detection by a porphyrin-based multilayer film. en_UK
dc.type Article en_UK


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