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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.16 [2009] >
IJEMS Vol.16(5) [October 2009] >
| Title: | Charge transport and ammonia sensing response in poly (aniline-co-1-amino- 2-naphthol-4-sulphonic acid) |
| Authors: | Bansal, Vineet
Bansal, M C
Dhawan, S K |
| Keywords: | Conducting polymer
Polyaniline
Copolymer
Nanotubes
Scanning electron microscopy
Charge transport |
| Issue Date: | Oct-2009 |
| Publisher: | CSIR |
| Abstract: | The paper reports the synthesis of tubes of
poly (aniline-co-1-amino-2-naphthol-4-sulphonic acid) using para toluene
sulphonic acid as a dopant. The copolymers have the conductivity of the order
of 0.348 S/cm to 0.198 S/cm depending on the
ratio of the co-monomers present in the feed ratio. The morphology of the
copolymers was studied by scanning electron microscope. Electrical conduction
have been studied in the temperature range from 300 K to 30 K. Charge transport
has been attributed as tunnelling in the range 30 K to 70 K. Above 70 K, charge
transport is represented by Mott’s three-dimensional variable hopping. The
copolymer has been found to be a better ammonia vapour sensing material and can
be used for detection for varying concentration. |
| Page(s): | 355-363 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.16(5) [October 2009]
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