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| Title: | One-step fabrication of a polyaniline nanofiber vapor sensor |
| Author (s): | Li, Zhefei Blum, Frank D. Bertino, Massimo Kim, Chang-Soo Pillalamarri, Sunil K. |
| Department/Lab Affiliations: | Chemistry Electrical and Computer Engineering Intelligent Microsystem Laboratory Materials Research Center Materials Science & Engineering |
| Keywords: | nanofibers polyaniline sensors |
| Subject Terms: | Detectors. Nanostructured materials. |
| Issue Date: | 2008-04 |
| Publisher: | Elsevier |
| Citation: | Z.F. Li, F.D. Blum, M.F. Bertino, C.S. Kim, and S.K. Pillalamarri. "One-Step Fabrication of a Polyaniline Nanofiber Vapor Sensor", Sensors & Actuators: B. Chemical, 2008. |
| Abstract: | A single-step, bottom-up technique has been used to fabricate sensors, based on conducting polymer nanofibers. A small amount of an aqueous solution of aniline, a dopant, and an oxidant was placed on an interdigitated electrode array. Ultraviolet (UV)-irradiation of the solutions affected polymerization, yielding a highly porous film of polyaniline nanofibers with a mean diameter of around 100 nm and a length on the order of 1 μm. Solutions that were not irradiated formed bulk-like polyaniline (PANI) films. Nanofibers and bulk polyaniline sensors were exposed to chloroform, a weak proton donor; toluene, a vapor that causes polymer swelling; and to triethylamine, which alters the doping level. Because of their higher surface areas, the response times of the fiber sensors were about a factor of 2 faster, with the current variations up to 4 times larger than those of the bulk polyaniline sensors. These results suggest methods for the advancement of simple and environmentally-friendly production of organic nanofiber-based sensors and electronic devices. |
| Type: | Article - Journal text |
| Publisher URL: | |
| Link to this page: |
| title | One-step fabrication of a polyaniline nanofiber vapor sensor |
| contributor.author | Li, Zhefei |
| contributor.author | Blum, Frank D. |
| contributor.author | Bertino, Massimo |
| contributor.author | Kim, Chang-Soo |
| contributor.author | Pillalamarri, Sunil K. |
| contributor.deptlab | Chemistry |
| contributor.deptlab | Electrical and Computer Engineering |
| contributor.deptlab | Intelligent Microsystem Laboratory |
| contributor.deptlab | Materials Research Center |
| contributor.deptlab | Materials Science & Engineering |
| subject | nanofibers |
| subject | polyaniline |
| subject | sensors |
| subject.LCSH | Detectors. |
| subject.LCSH | Nanostructured materials. |
| date.issued | 2008-04 |
| publisher | Elsevier |
| identifier.citation | Z.F. Li, F.D. Blum, M.F. Bertino, C.S. Kim, and S.K. Pillalamarri. "One-Step Fabrication of a Polyaniline Nanofiber Vapor Sensor", Sensors & Actuators: B. Chemical, 2008. |
| identifier.pub.URI | |
| description.abstract | A single-step, bottom-up technique has been used to fabricate sensors, based on conducting polymer nanofibers. A small amount of an aqueous solution of aniline, a dopant, and an oxidant was placed on an interdigitated electrode array. Ultraviolet (UV)-irradiation of the solutions affected polymerization, yielding a highly porous film of polyaniline nanofibers with a mean diameter of around 100 nm and a length on the order of 1 μm. Solutions that were not irradiated formed bulk-like polyaniline (PANI) films. Nanofibers and bulk polyaniline sensors were exposed to chloroform, a weak proton donor; toluene, a vapor that causes polymer swelling; and to triethylamine, which alters the doping level. Because of their higher surface areas, the response times of the fiber sensors were about a factor of 2 faster, with the current variations up to 4 times larger than those of the bulk polyaniline sensors. These results suggest methods for the advancement of simple and environmentally-friendly production of organic nanofiber-based sensors and electronic devices. |
| type | Article - Journal |
| type.DCMIType | text |
| date.accessioned | 2007-04-11T17:00:48Z |
| date.available | 2008-05-22T14:10:52Z |
| identifier.persist.URI |