▎ 摘　　要

Density functional theory (DFT) calculations were used to study the adsorption of noble metal (Pt) on deprotonated 1,3-dipolar cycloaddition graphene to explore the mechanism of the formation of metal nanowires. The results show that: (1) Pt atoms that adsorb on 1,3-dipolar cycloaddition graphene induce the deprotonation of this 1,3-dipolar cycloaddition graphene and then the configuration changes to a deprotonated 1,3-dipolar cycloaddition graphene; (2) the noble metal anchoring site on the deprotonated 1,3-dipolar cycloaddition graphene is the ortho-carbon of nitrogen in the deprotonated pyridine alkyne, which was further confirmed by the average Bader charge of the ortho-carbon, and the average Bader charge of the ortho-carbon is as high as 1.0e; (3) Pt-n nanowire can form between two neighboring deprotonated pyridine alkyne units of deprotonated 1,3-dipolar cycloaddition graphene, and the Pt-n (n=3-6) nanowire adsorption configurations are more stable than the corresponding Pt-n (n=3-6) cluster adsorption configurations; and (4) the electronic structure analysis of the composite shows that Pt metal adsorption does not essentially change the electronic property of deprotonated 1,3-dipolar cycloaddition graphene. The doped states of the Pt metal result in the Pt-6 cluster adsorption composite being metallic while the doped states result in the Pt-6 nanowire adsorption composite being semimetallic.