两种具有D-π-A结构化合物的合成、表征及三阶非线性光学特性

The nonlinearly optical properties of two compounds with donor/π-conjugated/acceptor (D-π-A) structure

报道了两种D π A结构的化合物,通过红外、元素分析、核磁及单晶X衍射对化合物的结构进行了表征。用Nd∶YAG脉冲激光器通过Z扫描技术研究了它们的三阶非线性光学特性。结果表明在532nm的激光作用下,不仅表现出显著的非线性光学折射率,而且表现出有大的非线性光学吸收系数。

Two novel organic compounds with donor/p-conjugated system /acceptor (D-π-A) structure were synthesized and characterized by IR, elemental analysis, ~1HNMR and single crystal X-ray diffraction analysis. Their nonlinearly optical properties of L_1, L_2 compounds have been investigated by Z-scan technique. The results show that the molecules were well planarity, there was a high delocalization of π electrons in the system. It was revealed that the two compounds have strong two-photon absorption and nonlinear refractive index under the pumping laser of 532nm wavelength.