Phenylene-functionalized polythiophene derivatives for light-emitting diodes: their synthesis, characterization and propertiesElectronic supplementary information (ESI) available: experimental details for the preparation of compounds 2, 3a–c and 4a–c. See http://www.rsc.org/suppdata/jm/b1/b103717j/
作者:Ai-Lin Ding、Jian Pei、Yee-Hing Lai、Wei Huang
DOI:10.1039/b103717j
日期:2001.11.23
The design, synthesis and characterization of a new series of conjugated polymers, poly[(3-(4′-n-butylphenyl)thiophene-2,5-diyl)(2,5-dialkoxy-1,4-phenylene)(4-(4′-n-butylphenyl)thiophene-2,5-diyl)] are described in this contribution. Three polymers modified by phenyl groups have been successfully synthesized via FeCl3-oxiditive polymerization. The well-defined structure of the polymers is fully verified by elemental analysis, FT-IR, and 1H and 13C NMR spectroscopy. All polymers show good thermal stability and solubility in common organic solvents. The absolute photoluminescence (PL) efficiencies of the polymers in the neat film can be up to 11%. The electrochemical properties of the polymers indicate that their HOMO and LUMO energy levels can be adjusted by means of the aromatic groups both in the side chain and the backbone structure.
Yellowish green electroluminescence is achieved from single-layered polymer light-emitting diodes (PLEDs) with the configuration ITO/polymer/Ca or Al.
本文介绍了新系列共轭聚合物(聚[(3-(4′-正丁基苯基)噻吩-2,5-二基)(2,5-二烷氧基-1,4-苯基)(4-(4′-正丁基苯基)噻吩-2,5-二基)])的设计、合成和表征。通过FeCl3氧化聚合,成功合成了三种由苯基修饰的聚合物。通过元素分析、FT-IR、1H和13C NMR光谱,充分验证了聚合物的明确结构。所有聚合物均具有良好的热稳定性和在常见有机溶剂中的溶解性。纯薄膜中聚合物的绝对光致发光(PL)效率可达11%。聚合物的电化学性质表明,可通过侧链和主链结构中的芳香基团调节其HOMO和LUMO能级。通过ITO/聚合物/Ca或Al结构,单层聚合物发光二极管(PLED)可实现黄绿色电致发光。