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Polyaniline Nanofiber Gas Sensors: Examination of Response Mechanisms
Abstract
Using a new interfacial polymerization method for the synthesis of polyaniline nanofibers, we have developed nanofiber sensors and compared them to conventional polyaniline sensors. Five different response mechanisms are explored: acid doping (HCl), base dedoping (NH 3 ), reduction (with N 2 H 4 ), swelling (with CHCl 3 ), and polymer chain conformational changes (induced by CH 3 OH). In all cases, the polyaniline nanofibers perform better than conventional thin films. Their high surface area, porosity and small diameters enhance diffusion of molecules and dopants into the nanofibers.
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Metadata
- Authors
- Virji, S., Huang, J., Kaner, R. B., & Weiller, B. H.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-02-19
- Volume
- 4
- Issue
- 3
- Pages
- 491-496
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W1974788729
- Cited by
- 1,108
- References
- 0
- FWCI
- 46.16
- Type
- journal article
- Language
- en
- Open access
- closed
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