Indeno[2,1-c]fluorene-based blue fluorescent oligomers and polymers:   Synthesis, structure, photophysical and electroluminescence properties

doi:10.1016/j.polymer.2013.03.044

CORC > 北京大学 > 化学与分子工程学院

	Indeno[2,1-c]fluorene-based blue fluorescent oligomers and polymers: Synthesis, structure, photophysical and electroluminescence properties
	Du, Bin ; Wang, Lei ; Yuan, Si-Chun ; Lei, Ting ; Pei, Jian ; Cao, Yong
刊名	polymer
	2013
关键词	Twisted backbone Light-emitting polymers Polycyclic skeleton LIGHT-EMITTING-DIODES BUILDING-BLOCKS ALTERNATING COPOLYMERS SIDE-CHAINS POLYFLUORENE STABILITY EMISSION POLY(P-PHENYLENE) POLYPHENYLENE PERFORMANCE
DOI	10.1016/j.polymer.2013.03.044
英文摘要	An alkylated skeleton of indeno[2,1-c]fluorene, viewed as a positional isomerism of indeno[1,2-b]fluorene, was developed to construct several conjugated oligomers and polymers through a Pd-catalyzed Suzuki coupling reaction for organic light-emitting diodes. Single crystal analysis indicated that the structure of indeno[2,1-c]fluorene was twisted due to close H H contacts in the crowded region of molecules. P1-P3 showed good solubility in common organic solvents as well as facile film forming properties. In comparison with linear n-alkyl-substituted oligo(indeno[1,2-b]fluorene)s and poly(indeno[1,2-b]fluorene)s (2,8-PIFs), the absorption and emission features of twisted n-alkyl-substituted oligo(indeno[2,1-c]fluorene)s and poly(indeno[2,1-c]fluorene) (P1) in dilute solution exhibited a correlation to the conjugation length and obviously blue-shifted due to the distorted backbones. All polymers emitted strong blue fluorescence with very narrow full widths at half-maximum (fwhm) (about 50 nm) in dilute solution and in thin film. Electroluminescent (EL) devices with the configuration of ITO/PEDOT:PSS/PVK/polymers/Ba/Al were fabricated to achieve blue EL emission with maximum brightness up to 2800 cd/m(2) at a bias of 10 V. The EL devices using P2 as the active materials showed a maximum external quantum efficiency of 1.2% and a maximum luminous efficiency of 1.5 cd/A. Our investigations demonstrate that indeno[2,1-c]fluorene moiety might be regarded as a potential building skeleton to develop the effective blue and UV light-emitting materials. (c) 2013 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000319365900013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); EI; 5; ARTICLE; 12; 2935-2944; 54
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/224155]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Du, Bin,Wang, Lei,Yuan, Si-Chun,et al. Indeno[2,1-c]fluorene-based blue fluorescent oligomers and polymers: Synthesis, structure, photophysical and electroluminescence properties[J]. polymer,2013.
APA	Du, Bin,Wang, Lei,Yuan, Si-Chun,Lei, Ting,Pei, Jian,&Cao, Yong.(2013).Indeno[2,1-c]fluorene-based blue fluorescent oligomers and polymers: Synthesis, structure, photophysical and electroluminescence properties.polymer.
MLA	Du, Bin,et al."Indeno[2,1-c]fluorene-based blue fluorescent oligomers and polymers: Synthesis, structure, photophysical and electroluminescence properties".polymer (2013).