Two-photon absorption, nonlinear optical and UV-vis spectral properties of 2-furanylmethyleneaminoantipyrine, benzylideneaminoantipyrine and cinnamilideneaminoantipyrine

► Three imine-bridged aromatic antipyrine derivatives as photo-responsive materials. ► The compounds exhibit two-photon absorption and first-hyperpolarization properties ► The compounds have long-range electron transfer characteristics.