Further improvement of the macroscopic NLO coefficient and optical transparency of hyperbranched polymers by enhancing the degree of branching

被引：25
作者：
Wu, Wenbo [1 ]
Li, Zhen [1 ]
机构：
[1] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China
来源：
POLYMER CHEMISTRY | 2014年 / 5卷 / 17期
基金：
美国国家科学基金会;
关键词：
DENDRIMERS CONVENIENT SYNTHESIS; ORGANIC ELECTROOPTIC MATERIALS; POWERFUL CLICK CHEMISTRY; MAIN-CHAIN POLYURETHANES; CHROMOPHORE MOIETIES; COPPER(I) CATALYSIS; STRUCTURAL CONTROL; FACILE SYNTHESIS; MONOMERS; POLYTRIAZOLES;
D O I：
10.1039/c4py00419a
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this paper, two new second-order nonlinear optical (NLO) hyperbranched polytriazoles (HP1 and HP2) containing nitro azobenzene as the chromophore were successfully prepared, through the AB(4)-type click polymerization under copper(I) catalysis. Thanks to the AB(4)-type branched monomer, the degree of branching (DB) of HP1 was improved to 0.691, much larger than that of its analogue, HPS1 (0.457), which was derived from an AB(2)-type monomer. The solubility, optical transparency and NLO coefficient of HP1 were all improved in comparison with those of HPS1, due to the better site-isolation effect. Furthermore, pentafluorophenyl rings were utilized as isolation groups to further enhance the NLO effect in HP2, and the d(33) value and the d(33)(infinity) value of HP2 were tested to be as high as 136 pm V-1 and 28 pm V-1, respectively.
引用
收藏
页码：5100 / 5108
页数：9
相关论文
共 69 条
[51]   Low (sub-1-volt) halfwave voltage polymeric electro-optic modulators achieved by controlling chromophore shape [J].
Shi, YQ ;
Zhang, C ;
Zhang, H ;
Bechtel, JH ;
Dalton, LR ;
Robinson, BH ;
Steier, WH .
SCIENCE, 2000, 288 (5463) :119-122
[52]   Hyperbranched and Highly Branched Polymer Architectures-Synthetic Strategies and Major Characterization Aspects [J].
Voit, Brigitte I. ;
Lederer, Albena .
CHEMICAL REVIEWS, 2009, 109 (11) :5924-5973
[53]   Simplifying the synthesis of dendrimers: accelerated approaches [J].
Walter, Marie V. ;
Malkoch, Michael .
CHEMICAL SOCIETY REVIEWS, 2012, 41 (13) :4593-4609
[54]   Hyperbranched polytriazoles with high molecular compressibility: aggregation-induced emission and superamplified explosive detection [J].
Wang, Jian ;
Mei, Ju ;
Yuan, Wangzhang ;
Lu, Ping ;
Qin, Anjun ;
Sun, Jingzhi ;
Ma, Yuguang ;
Tang, Ben Zhong .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (12) :4056-4059
[55]   Second-order nonlinear optical hyperbranched polymer containing isolation chromophore moieties derived from both "H"-type and star-type chromophores [J].
Wu, Wen-bo ;
Fu, Ying-jie ;
Wang, Can ;
Xu, Zhen ;
Ye, Cheng ;
Qin, Jin-gui ;
Li, Zhen .
CHINESE JOURNAL OF POLYMER SCIENCE, 2013, 31 (10) :1415-1423
[56]   New design strategies for second-order nonlinear optical polymers and dendrimers [J].
Wu, Wenbo ;
Qin, Jingui ;
Li, Zhen .
POLYMER, 2013, 54 (17) :4351-4382
[57]   Dendrimers with Large Nonlinear Optical Performance by Introducing Isolation Chromophore, Utilizing the Ar/ArF Self-Assembly Effect, And Modifying the Topological Structure [J].
Wu, Wenbo ;
Ye, Cheng ;
Qin, Jingui ;
Li, Zhen .
ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (15) :7033-7041
[58]   A series of AB2-type second-order nonlinear optical (NLO) polyaryleneethynylenes: using different end-capped spacers with adjustable bulk to achieve high NLO coefficients [J].
Wu, Wenbo ;
Ye, Cheng ;
Qin, Jingui ;
Li, Zhen .
POLYMER CHEMISTRY, 2013, 4 (07) :2361-2370
[59]   Second-order nonlinear optical dendrimers containing different types of isolation groups: convenient synthesis through powerful "click chemistry" and large NLO effects [J].
Wu, Wenbo ;
Wang, Can ;
Tang, Runli ;
Fu, Yingjie ;
Ye, Cheng ;
Qin, Jingui ;
Li, Zhen .
JOURNAL OF MATERIALS CHEMISTRY C, 2013, 1 (04) :717-728
[60]   Using Two Simple Methods of Ar-ArF Self-Assembly and Isolation Chromophores to Further Improve the Comprehensive Performance of NLO Dendrimers [J].
Wu, Wenbo ;
Yu, Gui ;
Liu, Yunqi ;
Ye, Cheng ;
Qin, Jingui ;
Li, Zhen .
CHEMISTRY-A EUROPEAN JOURNAL, 2013, 19 (02) :629-640
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