Low cost selective sensor for carbonyl compounds in air based on a novel conductive poly(p-xylylene) derivative
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
20/10/2012
20/10/2012
2009
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| Resumo |
A novel poly(p-xylylene), PPX, derivative bearing phenyl side groups was electrochemically synthesized in 85% yield. The polymer, poly(2-phenyl-p-xylylene) (PPPX), presented a major fraction (88%) soluble in common organic solvents. It showed to be thermally resistant up to 140 degrees C. UV-VIS analysis revealed an Egap of similar to 3.0 eV. Gas sensors made from thin films of CSA doped PPPX deposited on interdigitated electrodes exhibited significant changes in electrical conductance upon exposure to five carbonyl compounds: acetaldehyde, propionaldehyde. benzaldehyde, acetone and butanone. Three-dimensional plots of relative response vs. time of half-response vs. time of half-recovery showed good discrimination between the five carbonyl Compounds tested. (C) 2008 Elsevier B.V. All rights reserved. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) FAPESP[06/51701-5] FAPESP[06/59464-2] Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) CNPq[305152/2007-0] Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CNPq[472297/2007-4] Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
| Identificador |
Materials science and engineering. C, Biomimetic materials, sensors and systems, v.29, n.2, p.426-429, 2009 0928-4931 http://producao.usp.br/handle/BDPI/31219 10.1016/j.msec.2008.08.016 |
| Idioma(s) |
eng |
| Publicador |
ELSEVIER SCIENCE BV |
| Relação |
Materials science and engineering. C, Biomimetic materials, sensors and systems |
| Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE BV |
| Palavras-Chave | #Conductive polymers #Gas sensors #Volatile organic compounds #Volatile carbonyl compounds #GAS SENSORS #COPOLYMERS #ROUTE #Materials Science, Multidisciplinary |
| Tipo |
article original article publishedVersion |
