TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Disclosed): 4,4'-dichloro-1,1'-diphenyl sulfone and tetrahydrofuran are reacted in presence of butyl lithium to form lithium substituted dichloro diphenyl sulfone which was reacted with carbon dioxide to form bis(2-carboxyl-4-chlorophenyl)sulfone. The formed compound is reacted with thionyl chloride to form corresponding acid chloride. The acid chloride derivative is reacted with benzene in presence of aluminum chloride to form bis(2-benzoyl-4-chloro phenyl) sulfone derivative which is reacted with concentrated sulfuric acid, sodium chloride and sodium hydroxide to form bis(4-chloro-2-(3-sulfobenzoyl) phenyl)sulfone (D). The sulfone compound (D) is reacted with 4-amino phenol in presence of N-methyl pyrrolidone to form bis(4-(4-aminophenoxy)-2-(3-sulfone benzoyl) phenyl) sulfone (E). Preferred Definitions:    X=group of formula (e,f,g), or contains polyphenylene oxide chain or polyphenylene sulfide chain substituted with sulfonic acid group;    p=0 or 1;    Y=sulfonic acid group or chosen from 14 groups such as groups of formulae (h,i);    n=1-2;    t=-O-, -S-, or -SO2-;    Z=direct bond, -O-, -S-, -SO2-, -CO-, -CH2-, -CF2- or -C(CF3)2-;    m=1-20;and    n=1-2.    SPECIFIC COMPOUNDS - The diamino aromatic carbon compound is disclosed bis(4-(4-aminophenoxy)-2-(3-sulfone benzoyl) phenyl) sulfone of formula (E).    EXAMPLE - 4,4'-dichloro-1,1'-diphenyl sulfone (in g) (12.92) and tetrahydrofuran (225 ml) were reacted with butyl lithium hexane solution (10 ml) at -55degreesC or less for 1 hour. Carbon dioxide was blown into the reaction mixture for 1 hour and temperature was maintained below -30degreesC. The reaction mixture was separated into organic and water phases. The organic phase was added with hydrochloric aqueous solution, and the precipitated solid was washed and dried to form bis(2-carboxyl-4-chlorophenyl)sulfone (A) (11). The compound (A) (16) was reacted with thionyl chloride (80 ml) to form bis(2-chlorocarbonyl-4-chlorophenyl)sulfone (B) (16.6) with yield of 95%. The compound (B) (5.37) was reacted with benzene (180 ml) at 10degreesC, and aluminum chloride (3.81) at 35degreesC for 20 hours to form bis(2-benzoyl-4-chloro phenyl) sulfone (C) (5) with yield of 77%. The compound (C) was reacted with concentrated sulfuric acid (5 ml), cooled to 0degreesC and added with fuming sulfuric acid (5 ml). The mixture was heated to 70degreesC for 6 hours, poured into ice (200), and added with salt (50). The generated precipitate was neutralized with sodium hydroxide aqueous solution and filtered to form bis(4-chloro-2-(3-sulfobenzoyl) phenyl)sulfone (D) (6.7) with yield of 97%. 4-amino phenol (2.45), N-methyl pyrrolidone (15 ml) and potassium carbonate (1.5) were reacted at 140degreesC for 4 hours. The compound (D) (5.25) and N-methyl pyrrolidone (10 ml) were then added and reacted at 170degreesC for 24 hours. The reaction mixture was added with concentrated hydrochloric acid, and the solid deposited was washed and dried to form dark red bis(4-(4-aminophenoxy)-2-(3-sulfone benzoyl) phenyl) sulfone (E) (5.05) with yield of 84%.