▎ 摘　　要

Two kinds of graphene oxide-zinc phthalocyanine (GO-ZnPc) hybrid materials have been prepared by the covalent functionalization method. The morphologies and structures of the two kinds of GO-ZnPc hybrids are characterized by a series of methods, such as scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared, ultraviolet-visible absorption and fluorescence spectroscopies. From the fluorescence spectra, the two kinds of GO-ZnPc hybrids display strong fluorescence quenching by the photo-induced electron transfer (PET) process from ZnPc moieties to the GO. Energy diagrams show that a PET process from ZnPc molecules to GO nanosheets exists. The third order nonlinear optical (NLO) properties of GO-ZnPc hybrids are investigated by the Z-scan technique at 532 nm with 4 ns laser pulses. The nonlinear absorption coefficient beta value of GOZnPc( DG)(4) is larger than that of GO-ZnPc(TD)(4) because GO-ZnPc(DG)(4) possesses peripheral substituents with a stronger electron-donating effect compared to GO-ZnPc(TD)(4).