▎ 摘　　要

NOVELTY - A graphene-type two-dimensional covalent organic framework film is obtained by polymerizing hexaminotriptycene (I) and pyrenetetraone compound (II). USE - Graphene-type two-dimensional covalent organic framework film is used for forming chip for ion detecting material, battery separator material, and DNA sequencing material (all claimed). ADVANTAGE - The graphene-type two-dimensional covalent organic framework film has high pore density and ion permeability, and provides ion detecting material which enables rapid detection of ions. DETAILED DESCRIPTION - A graphene-type two-dimensional covalent organic framework film is obtained by polymerizing hexaminotriptycene of formula (I) and pyrenetetraone compound of formula (II). R1,R2 = 4-8C alkyl, preferably methyl;and R3-R6 = H or alkyl. INDEPENDENT CLAIMS are included for the following: (1) preparation of graphene-type two-dimensional covalent organic framework film, which involves dissolving compound (I) or its salt in water, adjusting pH of obtained solution to less than 7, obtaining a solution (s1), dissolving compound (II) in an organic solvent, obtaining a solution (s2), dripping solution (s1) into solution (s2), and polymerizing; (2) method for transferring graphene-type two-dimensional covalent organic framework film, which involves preparing the film, adhering the film on a substrate (E1), obtaining an immobilized film, coating surface of obtained film with a polymer solution, curing the polymer, etching, removing substrate (E1), obtaining a graphene-type two-dimensional covalent organic framework-polymer composite film, placing obtained film on a substrate (E2), cleaning with water or an organic solvent (a1), removing polymer film, and obtaining graphene-type two-dimensional covalent organic framework film transferred on substrate (E2); and (3) chip, which comprises a silicon nitride substrate and the two-dimensional covalent organic framework film formed on a surface of the substrate. The surface of the silicon nitride substrate comprises pores having a diameter of 1-5 mu m.