▎ 摘　　要

The functionalization of reduced graphene oxide by phenyl carboxylic diazonium salt and the subsequent attachment of a symmetrically substituted Zn-phthalocyanine via amide reaction were described. The graphene derivative was characterized by Raman spectra, Ultraviolet/visible spectra, Fourier transform infrared spectra, thermogravimetric analysis, scanning electron microscope, transmission electron microscopy, atomic force microscopy, fluorescence emission spectra and Z-scan experiments. The nanocomposite exhibited excellent thermal performance, a strong quenching and stronger nonlinear optical performance than that of each individual and the mixture in nanosecond regime. The thermogravimetric analysis tests showed the high grafting efficiency of phthalocyanine to graphene. And the efficient fluorescence quenching and optical limiting properties of the hybrid demonstrated the possible photoinduced electron transfer or energy transfer mechanism between graphene and phthalocyanine.