Tunable charge transfer effect in poly-(spirobifluorene)s with different electron-rich side chains

	Tunable charge transfer effect in poly-(spirobifluorene)s with different electron-rich side chains
	Wang, Xuchao ; Zhao, Lei ; Shao, Shiyang ; Ding,Junqiao ; Wang,Lixiang ; Jing,Xiabin ; Wang,Fosong
刊名	polymer chemistry
	2014
卷号	5 期号:22 页码:6444-6451
关键词	LIGHT-EMITTING-DIODES CONJUGATED POLYMERS GREEN EMISSION BLUE EMISSION ELECTROLUMINESCENT DERIVATIVES COPOLYMERS POLY(SPIROBIFLUORENE)S EFFICIENCY DEVICES
通讯作者	ding,jq
英文摘要	a series of blue-emitting poly(spirobifluorene)s (psfs), namely, cz-psf, 4ro-psf and dpa-psf, have been designed and synthesized by incorporating 2,7-bis(3,6-di-tert-butyl-9h-carbazol-9-yl)-9h-fluorene (czf), 2,3,6,7-tetraoctyloxyfluorene (4rof) and n, n', n'', n'''-tetrakis(4-butylphenyl)-9h-fluorene-2,7-diamine (dpaf) as their electron-rich side chains, respectively. consistent with their measured homo levels (czf: -5.40 ev; 4rof: -5.17 ev; dpaf: -4.86 ev), the donor strength of the pendant is enhanced in the sequence czf < 4rof < dpaf. as a result, the charge transfer (ct) effect from the pendant to the backbone is found to be gradually intensified on going from cz-psf to 4ro-psf and dpa-psf. the emission maximum is accordingly red-shifted from 423 nm for cz-psf to 452 nm for 4ro-psf and 482 nm for dpa-psf, which is associated with a significant decrease in the photoluminescent quantum yields. compared with 4ro-psf, the copolymer cz-psf containing a weaker donor shows deep-blue emission with cie coordinates of (0.16, 0.09-0.12) and a peak luminous efficiency of 2.21 cd a(-1). these results indicate that the ct effect can be effectively tuned to realize high-performance deep-blue-emitting psfs by the manipulation of the electron-donating ability of their spiro-conjugated side chains.
收录类别	SCI
语种	英语
WOS记录号	WOS:000343703900007
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/53008]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Wang, Xuchao,Zhao, Lei,Shao, Shiyang,et al. Tunable charge transfer effect in poly-(spirobifluorene)s with different electron-rich side chains[J]. polymer chemistry,2014,5(22):6444-6451.
APA	Wang, Xuchao.,Zhao, Lei.,Shao, Shiyang.,Ding,Junqiao.,Wang,Lixiang.,...&Wang,Fosong.(2014).Tunable charge transfer effect in poly-(spirobifluorene)s with different electron-rich side chains.polymer chemistry,5(22),6444-6451.
MLA	Wang, Xuchao,et al."Tunable charge transfer effect in poly-(spirobifluorene)s with different electron-rich side chains".polymer chemistry 5.22(2014):6444-6451.