▎ 摘　　要

NOVELTY - Nitrogen-15 and nitrogen-14 interspersed uniform nitrogen-doped graphene (I) is new. (I) is prepared by carrying out polycondensation of 15nitrogen and 14nitrogen interspersed hexaaminobenzene hydrochloride compound (II). USE - (I) is useful in preparing graphene materials and modified graphene materials; for characterization or detection of physical and chemical properties of graphene materials and modified graphene materials; for precise chemical structure characterization of uniform nitrogen-doped graphene porous materials; for study of intrinsic physical and chemical properties including optics, acoustics, electrical conductivity and heat conduction; for gas adsorption and separation and their mechanism research; and for study of single-atom catalytic mechanism (claimed). ADVANTAGE - The preparation method: is high efficient and simple; has strong feasibility and economic efficiency; adopts efficient and gentle polycondensation reaction; adopts high-efficiency diazonium salt formation reaction; and achieves nitrogen-15 selective labeling of hexaaminobenzene hydrochloride at 2,4,6-position. (I): ensures the labeled nitrogen-doped graphene material provides a large number of detectable signals by virtue of the periodic and uniformly distributed nitrogen-15 atoms inside the structure. DETAILED DESCRIPTION - Nitrogen-15 and nitrogen-14 interspersed uniform nitrogen-doped graphene of formula (I) is new. (I) is prepared by carrying out polycondensation of nitrogen-15 and nitrogen-14 interspersed hexaaminobenzene hydrochloride compound of formula (II). An INDEPENDENT CLAIM is also included for preparation of (I).