▎ 摘　　要

NOVELTY - Solvent-resistant polyimide separation membrane i.e. N1-(2-(2-(2-aminoethylamino)ethylamino)ethyl)-4-(4-(2-(2-(2-aminoethylamino)ethylamino)ethylcarbamoyl)-3-carbamoylbenzoyl)-N2-phenylphthalamide compound (I) is new. USE - (I) is useful in liquid includes water or organic solvent as a medium filtration (claimed), and in surface modification for improving the load fastness of graphene oxide on the surface, solvent resistance and the hydrophilicity. ADVANTAGE - The method: has simple process; and (I): improves inter-layer spacing and stability. DETAILED DESCRIPTION - Solvent-resistant polyimide separation membrane i.e. N1-(2-(2-(2-aminoethylamino)ethylamino)ethyl)-4-(4-(2-(2-(2-aminoethylamino)ethylamino)ethylcarbamoyl)-3-carbamoylbenzoyl)-N2-phenylphthalamide compound of formula (I) is new. X and Y1 = 2-acetyl-5-(4-acetyl-3-carbamoylbenzoyl)-N-phenylbenzamide moeity of formula (II) or 43-acetyl-2,14,21,22,40-pentahydroxy-3,26,39-trioxo-44,47,49-trioxanonadecacyclo(31.5.5.4(2,8).2(23,31).2(34,41).0(10,19).0(13,18).0(16,25).0(17,22).0(21,36).0(24,29).0(6,51).0(20,48).0(23,46).0(35,46).0(37,50).0(38,45).0(41,45).0(48,50))henpentacontane-5,11,30-tricarboxylic acid moeity of formula (III). INDEPENDENT CLAIMS are also included for: (1) surface modification of polyimide film, comprising aqueous solution containing graphene oxide or triethylenetetramine; and (2) preparing solvent-resistant polyimide separation membrane comprising (i) providing p84 polyimide base film, and (ii) applying surface modifying agent to the surface of p84 polyimide-based film to perfroming crosslinking reaction to obtain final product.