New fluorene based copolymer with Europium dye in the side chain for tunable multicolor emission'
| Autor: | M. Pasini, F. Vignali, U. Giovanella, S. Destri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Zdroj: | VI Convegno Nazionale Materiali Molecolari Avanzati Per Fotonica Ed Elettronica, ARBATAX (SARDEGNA), 25-27 GIUGNO 2009 info:cnr-pdr/source/autori:M. Pasini, F. Vignali, U. Giovanella and S. Destri/congresso_nome:VI Convegno Nazionale Materiali Molecolari Avanzati Per Fotonica Ed Elettronica,/congresso_luogo:ARBATAX (SARDEGNA)/congresso_data:25-27 GIUGNO 2009/anno:2009/pagina_da:/pagina_a:/intervallo_pagine |
| Popis: | Numerous investigations on organic electroluminescent (EL) devices based on organic dyes and polymers, being the latter more easily processable, have been extensively reported; among them, those where lanthanide complexes are employed as dopant in polymer host matrix are of great interest. In a previous work we obtained, for the first time, tunable multicolor EL emission from dispersion of a Eu3+ complex in the electroluminescent poly(9,9-dioctylfluorene) (PFO). The result has been reached by designing a complex whose ligand, with long alkyl chains, increases site isolation of Eu3+ ion and reduces the strong quenching effect due to back-transfer typical of Eu3+ complex:PFO blends. Spin-coated devices showed blue and red contemporary emission, (see Fig.1) with a maximum external quantum efficiency as high as 1%. |
| Databáze: | OpenAIRE |
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