Preparation of polymer films containing multi-branched chromophores for enhanced nonlinear optical activity
Preparation of polymer films containing multi-branched chromophores for enhanced nonlinear optical activity
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制备含有多支链发色团的聚合物薄膜以增强非线性光学活性
DOI：
10.1016/j.dyepig.2016.09.040
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发表时间：
2017
影响因子：
4.5
通讯作者：
Guodong Qian
中科院分区：
文献类型：
--
作者：
Wenxin Lin;Yuanjing Cui;Jiancan Yu;Yu Yang;Guodong Qian
为了获得理想的宏观非线性光学活性，以单发色团为原料，通过酯化反应合成了两种新的多支化发色团。通过1H NMR、FT-IR、元素分析、质谱和紫外-可见吸收光谱等手段对发色团的分子结构进行了表征。将单发色团N1和双发色团DN掺杂到聚4-乙烯基苯酚中，制备了高分子负载密度（高达30wt%）的主客体聚合物薄膜Film-N1和Film-DN。聚合物薄膜Film-N1和Film-DN的最大二次谐波产生系数（d33）分别达到25 pm V-1和39 pm V-1。相比之下，六支化树枝状发色团SN由于其大分子量（约3183 Da）而直接用于制备薄膜Film-SN，而无需任何聚合物基质，并且Film-SN的d33值高达208 pm V−1。与Film-N1相比，含有多支化发色团的Film-DN和Film-SN薄膜的d33值分别提高了约1.6倍和8.3倍，表明多支化发色团可以通过位隔离效应显著提高薄膜的宏观光学非线性.
Two new multi-branched chromophores were synthesized via esterification from monochromophores to achieve ideal macroscopic nonlinear optical activities. Molecular chemical structures of chromophores were confirmed by1H NMR, FT-IR spectroscopy, elemental analysis, mass spectrometry and UV–visible absorption spectra. MonochromophoreN1and bichromophoreDNwere doped into poly (4-vinylphenol) to fabricate guest-host polymer filmsFilm-N1andFilm-DNwith high molecular loading density (up to 30 wt%). And the maximum second harmonic generation coefficients (d33) of polymer filmsFilm-N1andFilm-DNreached to 25 pm V−1and 39 pm V−1, respectively. In contrast, six-branched dendritic chromophoreSNwas utilized directly to prepare thin filmFilm-SNwithout any polymer matrix due to its large molecular weight (about 3183 Da) and thed33value ofFilm-SNwas up to 208 pm V−1. Compared withFilm-N1, films containing multi-branched chromophoresFilm-DNandFilm-SNexhibited about 1.6-fold and 8.3-fold enhancement in thed33value indicating the multi-branched chromophore could significantly promote the macroscopic optical nonlinearity through the site-isolation effect.
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DOI：
10.1021/jp0549677
发表时间：
2005-11
期刊：
The journal of physical chemistry. B
影响因子：
--
作者：
Yuanjing Cui;G. Qian;Junkuo Gao;Lujian Chen;Zhiyu Wang;Min-quan Wang
通讯作者：
Yuanjing Cui;G. Qian;Junkuo Gao;Lujian Chen;Zhiyu Wang;Min-quan Wang
影响因子：
15
作者：
Kim, Tae-Dong;Kang, Jae-Wook;Jen, Alex K. -Y.
通讯作者：
Jen, Alex K. -Y.
影响因子：
8.6
作者：
Facchetti, A;Abbotto, A;Marks, TJ
通讯作者：
Marks, TJ
具有大电光活性和高热稳定性的非线性光学发色团的设计：供体基团的作用
影响因子：
4.5
作者：
Liu, Fenggang;Xiao, Hongyan;Qiu, Ling
通讯作者：
Qiu, Ling
影响因子：
3.6
作者：
PALEY, MS;HARRIS, JM;TWIEG, RJ
通讯作者：
TWIEG, RJ