Tuning the emission color of conjugated organic materials by photochemical reactions
| Autor: | U. Scherf, Hans-Heinrich Hörhold, Gregor Langer, Alexander Pogantsch, Hartwig Tillmann, Egbert Zojer, Wolfgang Kern, Gernot Trattnig |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
Materials science Photoluminescence Mechanical Engineering Metals and Alloys Polymer Fluorene Electroluminescence Conjugated system Condensed Matter Physics Photochemistry Photobleaching Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Mechanics of Materials Materials Chemistry Polymer blend Derivative (chemistry) |
| Zdroj: | TU Graz |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/s0379-6779(02)00888-3 |
| Popis: | In this contribution we investigate the energy transfer efficiency in blend films consisting of poly(fluorene) (PF) as host and a poly(para-phenylenevinylene) (PPV) derivative as guest materials. It is shown that the emission properties of the blend system can be efficiently tuned using a photoreaction with gaseous hydrazine. This is due to a photobleaching of the PPV type polymer, which results in a reduced energy transfer efficiency as a consequence of the breaking of π-conjugation. In contrast to oxidative bleaching the creation of non-radiative recombination centers is of minor importance. |
| Databáze: | OpenAIRE |
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