Li Qianqian, Li Zhen, Zeng Fanxin, Gong Wei, Li Zhong'an, Zhu Zhichao, Zeng Qi, Yu Shanshan, Ye Cheng, Qin Jingui
Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China.
J Phys Chem B. 2007 Jan 25;111(3):508-14. doi: 10.1021/jp066489l.
For the first time, the indole-based NLO chromophores were embedded into the polymer main chain, and different isolation groups were attached to their donor side with the efforts of adjusting the NLO properties of the resultant main-chain polyurethanes, according to the site isolation principle. Thanks to the main-chain structure and the advantages of the indole-based chromophores, all the polymers show excellent transparency, good processability, thermal stability, and relatively good NLO effects. The tested NLO properties of the polymers demonstrate that there is a suitable isolation group present for the sulfonyl-based chromophore to boost its microscopic beta value to a possibly higher macroscopic NLO property efficiently.
首次将基于吲哚的非线性光学发色团嵌入聚合物主链，并根据位点隔离原理，通过调整所得主链聚氨酯的非线性光学性质，在其供体侧连接不同的隔离基团。由于主链结构以及基于吲哚的发色团的优势，所有聚合物均表现出优异的透明度、良好的加工性能、热稳定性以及相对良好的非线性光学效应。聚合物的测试非线性光学性质表明，对于基于磺酰基的发色团而言，存在一个合适的隔离基团，可有效地将其微观β值提升至可能更高的宏观非线性光学性质。
