An Attempt To Modify Nonlinear Optical Effects of Polyurethanes by Adjusting the Structure of the Chromophore Moieties at the Molecular Level Using “Click” Chemistry
本文成功合成了两种分别具有两个双键和一个硫醇基的AB 2型二阶非线性光学单体(DN-SH和DS-SH)。极化后,在没有光引发剂的情况下,这两种单体可以在365 nm紫外线下通过硫醇-烯点击反应进行原位光交联。由于薄膜的光交联过程,大大提高了二阶非线性光学性质的热稳定性。DS-SH比DN-SH表现出更大的NLO效果和更好的NLO热稳定性,因为引入了基于磺酰基的生色团,可以减少基于硝基的生色团之间的静电相互作用。Ť 80%的光交联的DS-SH膜增加至112.5℃,比未交联的人(75℃)的高得多的,而Ť 80%的DN-SH膜从58增加至95℃。更令人兴奋的是,不同摩尔比(1:1、2:1、1:2)的DN-SH和DS-SH掺杂薄膜表现出更好的NLO性能(分别为123、122和114 pm V -1)。 )进行光交联后的结果),而不是单个DN-SH(89 pm V -1)和DS-SH(108 pm V
High-Generation Second-Order Nonlinear Optical (NLO) Dendrimers: Convenient Synthesis by Click Chemistry and the Increasing Trend of NLO Effects
作者:Zhong'an Li、Wenbo Wu、Qianqian Li、Gui Yu、Li Xiao、Yunqi Liu、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1002/anie.200906946
日期:2010.4.1
Click it in: Forth and fifth generation dendrimers (see structure), bearing 30 and 62 azobenzene chromophore moieties, respectively, are conveniently prepared in satisfactory yields through a combination of divergent and convergent approaches by using the powerful Sharpless “click” reaction.
Using Two Simple Methods of ArAr<sup>F</sup>Self-Assembly and Isolation Chromophores to Further Improve the Comprehensive Performance of NLO Dendrimers
作者:Wenbo Wu、Gui Yu、Yunqi Liu、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1002/chem.201202992
日期:2013.1.7
series of high‐generation nonlinearoptical (NLO) dendrimers have been conveniently prepared in high purity and satisfactory yields. Perfluoroaromatic rings and isolation chromophores were introduced to further improve their comprehensiveperformance. Thanks to the effects of ArArF self‐assembly and the isolation chromophores, coupled with perfect 3D spatial isolation from the highly branched structure
“H”-shape second order NLO polymers: synthesis and characterization
作者:Zhong’an Li、Pan Hu、Gui Yu、Wei Zhang、Zuoquan Jiang、Yunqi Liu、Cheng Ye、Jingui Qin、Zhen Li
DOI:10.1039/b816246h
日期:——
In this work, two “H”-shape and one “AB”-type second order nonlinear optical (NLO) polymers were prepared for the first time. The linkage positions of chromophores in the “H”-shapepolymers were shoulder-to-shoulder, in which the chromophore moieties were part of the polymeric backbone. The subtle structure could be easily modified by the introduction of different isolation groups, to adjust the property
在这项工作中,首次制备了两种“ H”形和一种“ AB”型二阶非线性光学(NLO)聚合物。“ H”形聚合物中发色团的键合位置是肩对肩,其中发色团部分是聚合物主链的一部分。通过引入不同的隔离基团可以很容易地对微妙的结构进行修饰,以调节所得聚合物的性能。所有聚合物均表现出良好的成膜能力和热稳定性。二次谐波生成(SHG)实验表明,两种“ H”形聚合物(P1和P2)显示出较大的SHG系数,其d 33值(最高90 pm V -1)和P2 甚至表现出相对较好的长期时间稳定性。
An Attempt To Modify Nonlinear Optical Effects of Polyurethanes by Adjusting the Structure of the Chromophore Moieties at the Molecular Level Using “Click” Chemistry
Photo-crosslinkable second order nonlinear AB<sub>2</sub>-type monomers: convenient synthesis and enhanced NLO thermostability
作者:Ruifang Wang、Ziyao Cheng、Xiaocong Deng、Wenjing Zhao、Qianqian Li、Zhen Li
DOI:10.1039/d0tc00308e
日期:——
AB2-type second-ordernonlinearoptical monomers (DN-SH and DS-SH) containing two double bonds and one thiol group, respectively, were synthesized successfully. These two monomers could be in situ photo-crosslinked via a thiol–ene click reaction under 365 nm UV light without a photoinitiator after poling. Thanks to the photo-crosslinking process of thin films, the thermostability of the second-order nonlinear
本文成功合成了两种分别具有两个双键和一个硫醇基的AB 2型二阶非线性光学单体(DN-SH和DS-SH)。极化后,在没有光引发剂的情况下,这两种单体可以在365 nm紫外线下通过硫醇-烯点击反应进行原位光交联。由于薄膜的光交联过程,大大提高了二阶非线性光学性质的热稳定性。DS-SH比DN-SH表现出更大的NLO效果和更好的NLO热稳定性,因为引入了基于磺酰基的生色团,可以减少基于硝基的生色团之间的静电相互作用。Ť 80%的光交联的DS-SH膜增加至112.5℃,比未交联的人(75℃)的高得多的,而Ť 80%的DN-SH膜从58增加至95℃。更令人兴奋的是,不同摩尔比(1:1、2:1、1:2)的DN-SH和DS-SH掺杂薄膜表现出更好的NLO性能(分别为123、122和114 pm V -1)。 )进行光交联后的结果),而不是单个DN-SH(89 pm V -1)和DS-SH(108 pm V