Dipole Assisted Photogated Switch in Spiropyran Grafted Polyaniline Nanowires
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
In this work we show dipole-assisted photogated switching by covalent grafting of photoactive molecules to conducting polymers. Photochromic spiropyran molecules were covalently attached to polyaniline (PANI) nanowires via N-alkylation reaction to the quinoic part of PANI. Upon irradiation with ultraviolet light spiropyran transformed to a large dipole containing molecule, merocyanine form. We show that this transformation leads to a substantial (ca. 2 orders of magnitude) increase in conductance of the photochromic PANI nanowires, which were evident by an increase in field-effect mobility and calculated band gap narrowing of the system. Finally, this transformation was found to be fully reversible with no significant photofatigue.
Details
Originalsprache | Englisch |
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Seiten (von - bis) | 3123-3128 |
Seitenumfang | 6 |
Fachzeitschrift | Journal of Physical Chemistry C, Nanomaterials and interfaces |
Jahrgang | 115 |
Ausgabenummer | 7 |
Publikationsstatus | Veröffentlicht - 24 Feb. 2011 |
Peer-Review-Status | Ja |
Externe IDs
Scopus | 79951888751 |
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WOS | 000287338100028 |
Schlagworte
Schlagwörter
- Field-effect transistors, Prussian blue, Iron-oxide, Amphiphilic azobenzene, Magnetic vesicles, Nanoparticles, Films, Derivatives, Substrate, Polymers