Enhanced thermal stability and electro-optic activity from fluorene-based nonlinear optical chromophores

被引：7

作者：

Liu, Fenggang ^{[1
]}

Yu, Canwen ^{[1
]}

Qin, Gangzhi ^{[1
]}

Peng, Meishan ^{[1
]}

Wang, Ziwei ^{[1
]}

Li, Ziheng ^{[1
]}

Wu, Shuangke ^{[1
]}

Li, Chunlin ^{[1
]}

Zhang, Maolin ^{[2
]}

机构：

[1] Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Peoples R China

[2] King Abdullah Univ Sci & Technol, KAUST Catalysis Ctr KCC, Thuwal 239556900, Saudi Arabia

来源：

DYES AND PIGMENTS | 2020年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Nonlinear optics; Chromophore; Isolation group; Electro-optic; Fluorene; FUNCTION-RELATIONSHIP EXPLORATION; SPHERICAL STRUCTURE; DESIGN; BRIDGE; COEFFICIENTS; PERFORMANCE; DENDRIMERS; POLYMERS; STATE;

D O I：

10.1016/j.dyepig.2020.108751

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Two 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 mu m, respectively. All these provide valuable insight into understanding of the impact of an isolation group on the performance of chromophores.

引用

页数：8

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