Four novel two-photon absorption compounds (1MOBI, 2MOHA, 3BrBI, and 4BrHA), which have assembled stilbene π-bridge, different electron acceptors and donors, were synthesized conveniently via the one-step Horner-Wadsworth-Emmons reaction. Their configurations are A-π-D-π-A, D′-π-D-π-D′, A′-π-A-π-A′, and D-π-A-π-D, respectively. Their linear and nonlinear optical properties including linear absorption, one-photon excited fluorescence, two-photon absorption, and two-photon excited fluorescence, were systematically investigated in various solvents. The results demonstrate that the compounds with dihexylamino donors exhibit good optical properties. 2MOHA and 4BrHA exhibit large two-photon absorption cross-sections (2183 and 1737 GM) in DMF, which are larger than those of many known stilbene derivatives. The relationships between the structures and the optical properties were studied aided with the time-dependent density functional theory calculations.

通过一步霍纳-沃兹沃思-埃蒙斯反应，合成了四种新型的双光子吸收化合物（1MOBI、2MOHA、3BrBI和4BrHA），它们组装了二苯乙烯 π 桥、不同的电子受体和供体。它们的构型分别是 A-π-D-π-A、D'-π-D-π-D'、A'-π-A-π-A' 和 D-π-A-π-D。在各种溶剂中系统地研究了它们的线性和非线性光学特性，包括线性吸收、单光子激发荧光、双光子吸收和双光子激发荧光。结果表明，具有二己基氨基供体的化合物表现出良好的光学性能。2MOHA和4BrHA在 DMF 中表现出大的双光子吸收截面（2183 和 1737 GM），这比许多已知的二苯乙烯衍生物大。借助瞬态密度泛函理论计算，研究了结构与光学特性之间的关系。