Design, Characterization, and Processing of Hybrid Organic−Inorganic Coatings with Very High Second-Order Optical Nonlinearities
Design, Characterization, and Processing of Hybrid Organic−Inorganic Coatings with Very High Second-Order Optical Nonlinearities
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DOI：
10.1021/cm960576g
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发表时间：
1997-04
影响因子：
8.6
通讯作者：
B. Lebeau;S. Brasselet;and Joseph Zyss;C. Sanchez
中科院分区：
文献类型：
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作者：
B. Lebeau;S. Brasselet;and Joseph Zyss;C. Sanchez
通过(4-（氨基-N，N-（二氧基二脲烷）丙基三乙氧基硅烷）-2-甲基-4′-硝基偶氮苯（ICTES - Red 17）和四甲基氧基硅烷（TMOS）的水解和共缩合，合成了有机-无机杂化纳米复合材料。从生成的溶胶中，可以沉积几微米厚的涂层。结果表明，溶胶的老化时间和涂层的热处理对提高二次谐波（SHG）响应及其时间稳定性都很重要。在溶胶-凝胶衍生NLO材料中，厚度为4.2 μm、ICTES - Red 17-TMOS摩尔组成为50/50的杂化涂层表现出最高的非谐振SHG响应（d33 = 150 pm/V, λ = 1.34 μm）。此外，它们在80℃下也表现出良好的稳定性。
Hybrid organic−inorganic nanocomposites have been synthesized through hydrolysis and co-condensation between (4-(amino-N,N-(diethoxydiurethano)propyltriethoxysilane)-2-methyl-4‘-nitroazobenzene (ICTES−Red 17) and tetramethoxysilane (TMOS). From the resulting sols, coatings a few microns in thickness can be deposited. It has been shown that the aging time of the sol and the thermal treatment of the coatings are both important to improve the second-harmonic-generation (SHG) response and its temporal stability. The hybrid coatings 4.2 μm thick, with a 50/50 ICTES−Red 17-TMOS molar composition, exhibit the highest nonresonant SHG response (d33 = 150 pm/V, λ = 1.34 μm) reported up to now for sol−gel-derived NLO materials. Moreover, they also exhibit a good stability at 80 °C.