A new nonlinear optical compound, 1, 8-dihydroxyl-4 (5-nitro-2-thiazole) azo -9, 10-dihydroanthracene was synthesized. The structure and properties of the compound were characterized by 1H-MNR, 13C-NMR, IR, UV-vis. The second-order polarizabilities were measured by solvatochromic method and the compound has βct value of 109 × 10-30 esu at 1064nm wavelength. The tautomerism of the compound in the different solvents was discussed also. The results showed that azo-type was the dominant structure in weakly polar solvents and the compound existed mostly as hydrazone-type in polar solvents.%本文合成了一种新的具有非线性光学性质的化合物1,8-二羟基-4(5-硝基-2-噻唑基) 偶氮 -9,10-二氢蒽.用1H-NMR,13C-NMR,IR,UV-Vis等对其结构和性能进行了表征.用溶致变色法测定了其二阶极化率(βct)值,在波长1064nm处,βct值为109×10-30esu.本文还讨论了该化合物在不同溶剂中的互变异构现象.研究表明:该化合物在弱极性溶剂中以偶氮式为优势结构,在强极性溶液中以醌腙式为优势结构.
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