▎ 摘　　要

NOVELTY - Porphyrin dimer graphene nonlinear composite material is formed by interaction between porphyrin dimer and graphene through pi-pi stacking effect. USE - Porphyrin dimer graphene nonlinear composite material used in nanosecond visible light field (claimed). ADVANTAGE - The porphyrin dimer graphene nonlinear composite material material has very strong reference significance for preparing a more efficient nanosecond nonlinear optical element. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing porphyrin dimer graphene nonlinear composite material, which involves: (a)dissolving tetraphenylporphyrin in a dichloromethane solution, adding copper acetate dissolved in a mixed acid solution in advance, and stirring for reaction to obtain 2-nitro-copper tetraphenylporphyrin;(b)reacting 2-nitro-copper tetraphenylporphyrin, 4-amino-4H-1,2,4-triazole and potassium hydroxide in a mixed solution of toluene and ethanol;(c)separating a reaction product to obtain 2-nitro-3-amino-copper tetraphenylporphyrin;(d)dissolving 2-nitro-3-amino-tetraphenylporphyrin copper in a dichloromethane solution, adding dropwise a mixture of concentrated sulfuric acid and trifluoroacetic acid, stirring;(e)pouring ice water after rapid reaction, collecting an organic phase, adding zinc acetate, stirring continuously, reacting, separating a reaction product to obtain 2-nitro-3-amino-tetraphenylporphyrin zinc;(f)dissolving 2-nitro-3-amino-zinc tetraphenylporphyrin in dichloromethane and methanol solution, adding palladium carbon, stirring uniformly, adding continuously sodium borohydride;(g)reacting under the monitoring of thin-layer chromatography, separating a reaction product to obtain 2,3-diaminoporphyrin zinc;(h)adding diethyl oxalate into a dichloromethane solution of 2,3-diaminoporphyrin zinc, reacting under the protection of nitrogen to obtain a porphyrin dimer (1a);(i)dispersing ultrasonically dispersing the graphene solid in dimethylformamide, adding porphyrin dimer (1a) into the dimethylformamide, performing continuously ultrasonic treatment;(j)stirring the mixture at normal temperature for reaction, filtering and washing the reaction product to obtain a porphyrin dimer graphene nonlinear composite material. DESCRIPTION OF DRAWING(S) - The drawing shows a preparation process and dispersibility image of the prepared porphyrin dimer graphene nanocomposite material (G-1a ).