High-Generation Second-Order Nonlinear Optical (NLO) Dendrimers that Contain Isolation Chromophores: Convenient Synthesis by Using Click Chemistry and their Increased NLO Effects

被引：59

作者：

Wu, Wenbo ^{[2
]}

Li, Conggang ^{[1
]}

Yu, Gui ^{[3
]}

Liu, Yunqi ^{[3
]}

Ye, Cheng ^{[3
]}

Qin, Jingui ^{[2
]}

Li, Zhen ^{[2
]}

机构：

[1] Chinese Acad Sci, China State Key Lab Magnet Resonance & Atom & Mol, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China

[2] Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China

[3] Chinese Acad Sci, Organ Solids Labs, Inst Chem, Beijing 100080, Peoples R China

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2012年 / 18卷 / 35期

基金：

美国国家科学基金会;

关键词：

azo compounds; chromophores; click chemistry; dendrimers; nonlinear optics; ORGANIC ELECTROOPTIC MATERIALS; MAIN-CHAIN POLYURETHANES; THERMAL-STABILITY; POLYMERS; DESIGN; MACROMOLECULES; EFFICIENT; ASSEMBLIES; MOIETIES; LAYER;

D O I：

10.1002/chem.201200441

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein, high-generation dendrimers G4-NS and G5-NS, which contained 30 and 62 azo-benzene chromophore moieties, respectively, were conveniently prepared in high purity and satisfied yields by a combination of divergent and convergent approaches, coupled with the utilization of the powerful Sharpless click reaction. These dendrimers possessed a regular structure of alternating layers of nitro-based and sulfonyl-based azo chromophores in which the sulfonyl-based azo-chromophore moieties were utilized as co-isolation groups for the nitro-based moieties to achieve larger macroscopic second-order nonlinear optical (NLO) effects. These high-generation dendrimers (G4-NS and G5-NS) displayed very large NLO efficiencies (up to 253.0 pm?V-1), which is, to the best of our knowledge, the record highest efficiency for simple azo-chromophore moieties.

引用

页码：11019 / 11028

页数：10

共 61 条

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