A nunchaku-like nonlinear optical chromophore for improved temporal stability of guest-host electro-optic materials

作者：Huang, Heyan; Deng, Guowei; Liu, Jialei; Wu, Jieyun; Si, Peng; Xu, Huajun; Bo, Shuhui; Qiu, Ling; Zhen, Zhen; Liu, Xinhou^*

来源：Dyes and Pigments, 2013, 99(3): 753-758.

DOI：10.1016/j.dyepig.2013.06.034

• Nonlinear optical materials
• Chromophore
• Biphenylene
• Electro-optic
• Temporal stability
• Poled film

A novel nunchaku-like organic second order nonlinear optical chromophore containing a D-pi-A backbone and a rigid biphenylene unit was prepared. The UV vis absorption spectra studies demonstrated that the large rigid structure could suppress dipole dipole interactions effectively. The electro-optic coefficient of a poled film containing 20% wt of the new dye doped in amorphous polycarbonate afforded a value of 39 pm/V at 1310 nm. Compared with results obtained from a similar D-pi-A chromophore without the rigid isolated group, the new dye gave better performance. Moreover, the electrooptic film prepared with the new dye gave greater temporal stability, compared to a similar D-pi-A doped poled film that was reported previously. These results indicated that the introduction of a biphenylene group could effectively reduce the intermolecular electrostatic interactions and aid the alignment of the chromophores.

• 出版日期2013-12
• 单位中国科学院理化技术研究所; 中国科学院大学