Decreased degradation of poly(p-phenylene vinylene) films at the indium–tin oxide interface
| Autor: | José Roberto Tozoni, L. C. Poças, S. L. Nogueira, Roberto S. Nobuyasu, M. J. M. Pires, Alexandre Marletta, Raigna A. Silva, Gustavo G. Dalkiranis |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Materials science Mechanical Engineering Sodium dodecylbenzenesulfonate Oxide Poly(p-phenylene vinylene) Polymer Indium tin oxide Absorbance chemistry.chemical_compound chemistry Chemical engineering X-ray photoelectron spectroscopy Mechanics of Materials Electrode Polymer chemistry General Materials Science |
| Zdroj: | Journal of Materials Science. 46:2644-2648 |
| ISSN: | 1573-4803 0022-2461 |
| DOI: | 10.1007/s10853-010-5119-7 |
| Popis: | This article discusses a strategy to reduce the degradation of a poly(p-phenylene vinylene) (PPV) film at the interface with an indium–tin oxide (ITO) electrode. It consists of using a less aggressive leaving group, the sodium dodecylbenzenesulfonate salt (DBS), in the chemical synthesis of PPV starting with the polymer precursor, and performing the thermal conversion into PPV at a lower temperature (100 °C) than in the conventional synthesis. The absorbance spectrum for an ITO/PPV + DBS film indicated that the polymer is less degraded and has the emission efficiency increased by ca. 4.5 times in comparison to ITO/PPV films obtained with the conventional procedures, i.e., with thermal conversion at 200 °C, in vacuum, during 2 h. The main reason for the enhanced performance of the route reported in this article is a decrease in the oxygen concentration at the ITO/PPV interface, as inferred with X-ray Photoelectron Spectroscopy which corroborates the optical properties. |
| Databáze: | OpenAIRE |
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