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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/33246
Título: 
Doping of polyaniline by corona discharge
Autor(es): 
Instituição: 
  • Universidade Estadual Paulista (UNESP)
  • Universidade de São Paulo (USP)
  • Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
ISSN: 
0021-8979
Resumo: 
In the present article it is shown that a corona discharge can be employed to dope thin films of polyaniline (PANI) coated on poly(ethylene terephthalate) films, allowing the electrical conductivity to be tuned within the range 10(-10) to 0.3 S cm(-1). A study of the effect of different corona conditions, namely corona treatment for positive and negative polarities, air humidity, treatment time, corona current, and the geometry of the corona triode, on the electrical conductivity of the polyaniline is presented. The results indicate that the corona discharge leads to protonic doping of polyaniline similar to that which occurs in conventional protonic acid solution doping. Atomic force microscopic analysis shows that, as the PANI is exposed to the corona discharge, its globular morphology is disrupted leading to the appearance of droplet-like features and a significant decrease in the average height and surface roughness. Doping by corona discharge presents several advantages over the conventional solution method namely that it is a dry process which does not require use of chemicals reagents, and which is both rapid and avoids dopant migration. The latter can be important for applications of PANI in microelectronic devices. (C) 2000 American Institute of Physics. [S0021-8979(00)01608-X].
Data de publicação: 
15-Abr-2000
Citação: 
Journal of Applied Physics. Melville: Amer Inst Physics, v. 87, n. 8, p. 3878-3882, 2000.
Duração: 
3878-3882
Publicador: 
American Institute of Physics (AIP)
Fonte: 
http://dx.doi.org/10.1063/1.372428
Endereço permanente: 
Direitos de acesso: 
Acesso restrito
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/33246
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