Li Zhong'an, Hu Pan, Yu Gui, Zhang Wei, Jiang Zuoquan, Liu Yunqi, Ye Cheng, Qin Jingui, Li Zhen
Department of Chemistry, Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Wuhan University, 430072, Wuhan, China.
Phys Chem Chem Phys. 2009 Feb 28;11(8):1220-6. doi: 10.1039/b816246h. Epub 2009 Jan 7.
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"-shape polymers 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 of the resultant polymers. All the polymers exhibited good film-forming ability and thermal stability. The second harmonic generation (SHG) experiments demonstrated that the two "H"-shape polymers (P1 and P2) exhibited large SHG coefficients of d(33) values (up to 90 pm V(-1)), and P2 even demonstrated relatively good long-term temporal stability.
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连接位置是肩并肩的，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轻松修饰这种精细结构，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。二次谐波产生（SHG）实验表明，两种“H”形聚合物（P1和P2）表现出较大的SHG系数d(33)值（高达90 pm V(-1)），并且P2甚至表现出相对良好的长期时间稳定性。
