ICCAS OpenIR
Dendronized Polyfluorenes with High Azo-Chromophore Loading Density: Convenient Synthesis and Enhanced Second-Order Nonlinear Optical Effects
Li, Zhong'an1; Yu, Gui2; Liu, Yunqi2; Ye, Cheng2; Qin, Jingui1; Li, Zhen1
2009-09-08
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume42Issue:17Pages:6463-6472
AbstractTwo new dendronized nonlinear optical (NLO) polyfluorenes were synthesized with high azochromophore loading density by the introduction of high generation chromophore dendrons on the side chains. Thanks to the advantages of Sharpless' click chemistry reaction, the dendrons were conveniently bonded to the backbone of polyfluorene with the conversion of 100%, although they were really very bulky. The new-formed triazole rings in the dendrons acted as suitable isolation groups to minimize the strong dipole-dipole interactions among the polar chromophore moieties to improve NLO effects, according to the results obtained from UV-vis spectra and order parameters. All the polymers were well characterized and exhibited good solubility, high thermal ability, wide optical window, and large NLO, effects (up to 106.0 pm/V). In addition, the tested NLO results of these dendronzied polymers demonstrated a deviation from the dipolar frustration that typically limits the NLO effect in conventional chromophore/polymer composite materials, indicating that the frequently observed asymptotic dependence of electro-optic activity on chromophore density may be overcome through rational design.
DOI10.1021/ma901108r
Indexed BySCI
Language英语
WOS IDWOS:000269635900018
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/66990
Collection中国科学院化学研究所
Corresponding AuthorLi, Zhen
Affiliation1.Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Chem, Organ Solids Labs, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhong'an,Yu, Gui,Liu, Yunqi,et al. Dendronized Polyfluorenes with High Azo-Chromophore Loading Density: Convenient Synthesis and Enhanced Second-Order Nonlinear Optical Effects[J]. MACROMOLECULES,2009,42(17):6463-6472.
APA Li, Zhong'an,Yu, Gui,Liu, Yunqi,Ye, Cheng,Qin, Jingui,&Li, Zhen.(2009).Dendronized Polyfluorenes with High Azo-Chromophore Loading Density: Convenient Synthesis and Enhanced Second-Order Nonlinear Optical Effects.MACROMOLECULES,42(17),6463-6472.
MLA Li, Zhong'an,et al."Dendronized Polyfluorenes with High Azo-Chromophore Loading Density: Convenient Synthesis and Enhanced Second-Order Nonlinear Optical Effects".MACROMOLECULES 42.17(2009):6463-6472.
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