Gas Sensing Characteristics of Polyaniline Single-Wall Carbon Nanotube Composites

다국어 초록 (Multilingual Abstract)

A composite of polyaniline (PANi) and single-wall carbon nanotubes (SWNTs) is created when
aniline and oxidant are added into the acidic medium used for the purication of SWNTs. Raman
and FTIR spectra indicate variations in the intensity and shifts in positions of the adsorption
bands assigned to the vibration modes standing for PANi. The results are interpreted as being due
to modications in the chemical and the electronic structures of PANi. The addition of SWNTs in
PANi enhances the degree of oxidation of emeradine PANi and is considered as a physical doping
for PANi conductivity. The presence of SWNTs in the PANi-SWNTs composite alters the polaron
and the bipolaron lower levels in the PANi band gap. As a result, PANi-SWNT composites exhibit
signicantly improved in gas-sensing characteristics.

다국어 초록 (Multilingual Abstract)

A composite of polyaniline (PANi) and single-wall carbon nanotubes (SWNTs) is created when
aniline and oxidant are added into the acidic medium used for the purication of SWNTs. Raman
and FTIR spectra indicate variations in the intensity and shifts in positions of the adsorption
bands assigned to the vibration modes standing for PANi. The results are interpreted as being due
to modications in the chemical and the electronic structures of PANi. The addition of SWNTs in
PANi enhances the degree of oxidation of emeradine PANi and is considered as a physical doping
for PANi conductivity. The presence of SWNTs in the PANi-SWNTs composite alters the polaron
and the bipolaron lower levels in the PANi band gap. As a result, PANi-SWNT composites exhibit
signicantly improved in gas-sensing characteristics.

참고문헌 (Reference)

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