Fabrication and characterization of polysilsesquioxanes nanocomposites based chemical sensor

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Abstract

In this work, we investigate amperometric chemical sensor devices based on polyhedral oligomeric silsesquioxanes (POSS) nanocomposites. Devices, fabricated spinning the polymer on a substrate (glass, alumina), have been tested vs. ammonia, VOC and humidity. The devices exhibit a very strong, nicely reversible, response to water vapour. The operating mechanism at the base of the observed phenomena is explained in terms of a resonant charge transfer within the POSS cages enhanced by the water presence. The effect of the incorporation of other fillers such as carbon and zinc, has been also investigated in view of their possible use to improve sensor selectivity. © 2007 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)487 - 490
Number of pages4
JournalSensors and Actuators, B: Chemical
Volume129
Issue number1
DOIs
Publication statusPublished - 29 Jan 2008

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All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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