Synthesis and Characterization of a New Semiconductor Oligomer HavingQuinoline and Fluorene Units
A new oligomer having fluorenylene and quinolinylene groups was straightforwardlysynthesized by Suzuki reaction and proven to be readily soluble in common organicsolvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transfor...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Brasil |
| Institución: | Universidade Federal de São Paulo (UNIFESP) |
| Repositorio: | Repositório Institucional da UNIFESP |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unifesp.br:11600/8776 |
| Acceso en línea: | http://dx.doi.org/10.5935/0103-5053.20140217 http://repositorio.unifesp.br/handle/11600/8776 |
| Access Level: | acceso abierto |
| Palabra clave: | conjugated material fluorene quinoline Suzuki OLEDs |
| Sumario: | A new oligomer having fluorenylene and quinolinylene groups was straightforwardlysynthesized by Suzuki reaction and proven to be readily soluble in common organicsolvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR),differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and gelpermeation chromatography (GPC) measurements. In solution, the oligomer presented twoabsorption maxima at 314 and 245 nm, along with a high fluorescence quantum yield(82%), characterized by an emission maximum at 419 nm. The band gap of the materialwas estimated to be around 2.60 eV by cyclic voltammetry, however the optical bandgap for the thin film observed by UV-Vis spectroscopy was 3.10 eV. The divergence waattributed to charge transfer interactions due to the presence of donor and acceptorunits in the copolymer. |
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