Enhanced thermal stability and electro-optic activity from fluorene-based nonlinear optical chromophores
Online Publication Date2020-08-08
Print Publication Date2020-12
Embargo End Date2021-08-01
Permanent link to this recordhttp://hdl.handle.net/10754/664771
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AbstractTwo series of nonlinear optical chromophores G1–G4 and J1-J4 based on diethylaminophenyl or julolidinyl-based donor and tricyanovinyldihydrofuran acceptor have been synthesized. Compared to the unmodified isophorone bridge of chromophore G1 and J1, the bridges of chromophores G2/J2 and G3-G4/J3-J4 were modified with tert-butyldimethylsilyl (TBDMS) groups and fluorene group, respectively. In addition, we introduced bulky tert-butyldiphenylsilyl (TBDPS) groups to the donor of chromophore G4 and J4 to further increase poling efficiency. The results show that the chromophores G3-G4/J3-J4 modified with fluorene groups on the bridge have higher stability and larger electro-optic coefficient than chromophores G1-G2 and J1-J2. Electro-optical films doped with chromophore G1-G4 and J1-J4 have been poled to give r33 values of 69, 96, 118, 133, 143, 201, 240 and 261 pm/V at 1.31 μm, respectively. All these provide valuable insight into understanding of the impact of an isolation group on the performance of chromophores.
CitationLiu, F., Yu, C., Qin, G., Peng, M., Wang, Z., Li, Z., … Zhang, M. (2020). Enhanced thermal stability and electro-optic activity from fluorene-based nonlinear optical chromophores. Dyes and Pigments, 183, 108751. doi:10.1016/j.dyepig.2020.108751
SponsorsWe gratefully acknowledge the financial support of the National Natural Science Foundation of China (No. 21805049) and Guangzhou Municipal Science and Technology Project (No.201904010176) for the financial support.
JournalDyes and Pigments