TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The base comprises sodium hydroxide and/or potassium carbonate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The aromatic monomer comprises one of 4,4'-difluorobenzophenone, 4,4'-difluorodiphenylsulfone, 4,4'-didichlorodiphenylsulfone or 1,3-bis(4'-fluorobenzoyl)benzene. The solvent is sulfolane, diphenylsulfone, dimethylfluoride, dimethylsulfoxide, dimethylacetamide and/or N-methylpyrrolidinone.    TECHNOLOGY FOCUS - POLYMERS - Preparation: No general method for the preparation of the product (P1) is given. Preferred Product: The product (P1) comprises: an organic super diacid comprising a first aromatic ring that carries a first acid group, a second aromatic ring that carries a second acid group, and an intermediate compound that links the first aromatic ring and the second aromatic ring, where the first acid group and the second acid group are positioned to experience intramolecular hydrogen bonding therebetween. The product (P1) comprises: an organic super diacid molecule comprising a base structure that comprises two aromatic ring structures linked by an intermediate organic structure, where one aromatic ring structure carries a first acid group and the other aromatic ring structure carries a second acid group, and the two acid groups configured to experience intramolecular hydrogen bonding therebetween. The product (P1) comprises: a proton conductive polymer for use in a fuel cell comprising a first structural unit of formula (I) (preferably 4 compounds as given in the specification, e.g. group of formulae (ia) and (ib)).A'=sulfonic acid group, carboxylic acid or phosphoric acid group (preferably sulfonic acid);Y'=O, S or direct carbon bond;B'=alcohol, halide, NO2, low molar volume ether group, low molar volume ester group, low molar volume carbonate group or -O- (preferably methyl ether, isopropyl ether, tert-butyl ether, trifluoromethyl ether, trichloromethyl ether, ester acetate or butoxycarbonyl);Z'=sulfonyl or carbonyl group;R=low molar volume ligand to form low molar volume ether, low molar volume ester or low molar volume carbonyl (preferably CH3, CH(CH3)2, C(CH3)3, CF3, CCl3, C(O)CH3 or C(O)OC(CH3)3.Preferred Components: The proton conductive polymer is a proton conductive copolymer further comprising a second structural unit of formula (II) (preferably 4 compounds as given in the specification, e.g. compound of formula (ic)).Y1=electron withdrawing group (preferably -O-, -S-, -CO-, -SO2-, -POR-, alkyl, perfluoroalkyl or heteroaromatic ring (preferably pyridine, oxazole, benzoxazole, quinoxaline, or oxadiazole));A1=sulfonic acid;Z1=sulfonyl;R1=R.Preferred Process: In the process (P2), polymerizing the polymerizable organic superdiacid monomer involves polymerizing, by way of a polycondensation reaction, the polymerizable organic superdiacid monomer with an aromatic monomer of formula (IV). In the process (P2), polymerizing the polymerizable organic superdiacid monomer involves polymerizing the polymerizable organic superdiacid in a solvent and a base.Y3=electron withdrawing group (preferably -O-, -S-, -CO-, -SO2-, -P(O)R-, alkyl, perfluoroalkyl or heteroaromatic ring (preferably pyridine, oxazole, benzoxazole, quinoxaline or oxadiazole));X3=leaving group (preferably F, Cl, Br, NO2, OH or SH.In the formula (IV), X3 is OH or SH if any B2 of the polymerizable organic superdiacid monomer is a halide. EXAMPLE - No suitable example is given.