期刊
SYNTHETIC METALS
卷 162, 期 1-2, 页码 35-43出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2011.11.005
关键词
Europium complexes; Fluorene; Bipyridine copolymers; Photophysical properties
资金
- INEO (National Institute for Organic Electronics)
- CNPq (National Research Council)
The synthesis and structural characterization of a europium complexed fluorene-bipyridine copolymer are described. A level of ion insertion of 80% in molar basis was achieved, and theoretical calculations showed that it required a twist of 179 degrees (49 kJ) between the pyridine units. Spectroscopy data showed that no electronic coupling between the main backbone and the complexation sites had occurred, but these hindered the interchain aggregation observed in the non complexed polymer. Preliminary electroluminescence studies showed that the EL and PL spectra are consistent, and that the ion had a trapping effect in the charge transport. (C) 2011 Elsevier B.V. All rights reserved.
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