917501-64-5Relevant academic research and scientific papers
Photo-crosslinkable second order nonlinear AB2-type monomers: Convenient synthesis and enhanced NLO thermostability
Cheng, Ziyao,Deng, Xiaocong,Li, Qianqian,Li, Zhen,Wang, Ruifang,Zhao, Wenjing
, p. 6380 - 6387 (2020)
In this article, two AB2-type second-order nonlinear optical 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 th
An attempt to modify nonlinear optical effects of polyurethanes by adjusting the structure of the chromophore moieties at the molecular level using "click" chemistry
Li, Zhong'an,Zeng, Qi,Li, Zhen,Dong, Shoucheng,Zhu, Zhichao,Li, Qianqian,Ye, Cheng,Di, Chong'an,Liu, Yunqi,Qin, Jingui
, p. 8544 - 8546 (2007/10/03)
The modification of the nonlinear optical effects (NLO) properties of polyurethanes by adjusting the structure of chromophore moieties at the molecular level by introducing different size of isolation spacers, was illustrated. One of the major problems arising while optimizing organic NLO materials is to efficiently translate the large β values of the organic chromophores into high macroscopic NLO activities of polymers. The isolation parts in the chromophore moieties can weaken the strong intermolecular electrostatic interaction to enhance the resultant macroscopic NLO effect of polymers. The dynamic thermal stabilities of the NLO activities of the polymers are investigated by depoling experiments where the real time decays of their SHG signals are monitored. The results show that the NLO properties do not always increase accompanying with the entanglement of the isolation groups linked to the corresponding chromophore moieties.
