Effects of pi-spacers on the linear and nonlinear optical properties of novel fluorenone-based D-pi-A-pi-D type conjugated oligomers with different donors

	Effects of pi-spacers on the linear and nonlinear optical properties of novel fluorenone-based D-pi-A-pi-D type conjugated oligomers with different donors
	Huang T. H.; Li X. C.; Wang Y. H.; Kang Z. H.; Lu R.; Miao E. L.; Wang F.; Wang G. W.; Zhang H. Z.
	2013
发表期刊	Optical Materials
ISSN	ISBN/0925-3467
卷号	35 期号:7
摘要	We compare the effects of fluorene-ethylene (FE) spacers on the photo-physical properties of fluorenonebased conjugated oligomers. The introduction of FE spacer could modulate the steady-state spectra and weaken the difference between donor-dependent spectral features. Meanwhile, the quantum chemical calculations exhibit that the electron transition mechanism modulated by FE unit is variable with the donor of oligomers. The FE pi-spacer mainly rises the HOMO and facilitates the electron delocalization in the fluorene end-capped oligomer, while it lowers the LUMO and enhances the donor effect in the triphenylamine end-capped one. The time-resolved fluorescence measurement exhibits that the difference between donor-dependent excited state lifetimes of oligomers becomes less obvious after the introduction of FE units. Moreover, the nonlinear optical measurements show that the FE spacer is able to improve the two-photon fluorescence efficiency and enhance the two-photon absorption cross-section of oligomers simultaneously, but the difference in two-photon characteristics between oligomers with different donors is also decreased. (C) 2013 Elsevier B.V. All rights reserved.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/40629
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Huang T. H.,Li X. C.,Wang Y. H.,et al. Effects of pi-spacers on the linear and nonlinear optical properties of novel fluorenone-based D-pi-A-pi-D type conjugated oligomers with different donors[J]. Optical Materials,2013,35(7).
APA	Huang T. H..,Li X. C..,Wang Y. H..,Kang Z. H..,Lu R..,...&Zhang H. Z..(2013).Effects of pi-spacers on the linear and nonlinear optical properties of novel fluorenone-based D-pi-A-pi-D type conjugated oligomers with different donors.Optical Materials,35(7).
MLA	Huang T. H.,et al."Effects of pi-spacers on the linear and nonlinear optical properties of novel fluorenone-based D-pi-A-pi-D type conjugated oligomers with different donors".Optical Materials 35.7(2013).

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