TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: The cyclic organic group in the repeating unit (b) is optionally substituted aromatic group. The ion conductor contains comonomer having ethylenically unsaturated bond. The repeating unit (b) having the cyclic organic group is of formula (II).W1=trivalent hydrocarbyl.    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The polymer further has repeating unit (c). The polymer containing the repeating unit (a) is block copolymer. Preferred Definitions:    Z=-O-CH2-, -O-CH(-CH3)-, -O-CH2-CH2-, -O-CH2-CH(-CH3)-, -O-CH2-CH2-CH2-, -O-CH2-CH2-CH2-CH2-, -O-CH2-CH2-CH2-CH2-CH2-, or -O-CH2-CH2-CH2-CH2-CH2-CH2-.    EXAMPLE - 2.16 g 1,2,3,4,5-Pentaethyl-6-(4-ethenylphenyl)benzene-1,2,3,4,5-pentacarboxylate and 500 ml dehydrated tetrahydrofuran were reacted, 1.14 g lithium aluminum hydride was injected, stirred at room temperature for 24 hours, 1.5 ml water was added and filtered, to obtain pale yellow product. The pale yellow product and dehydrated dimethylformamide were reacted, 1.44 g sodium hydride was added, stirred at room temperature for 12 hours under nitrogen stream condition, 9.6 g trimethylene glycol monomethyl ether mono tosylate was added, stirred at room temperature for 24 hours, water was added, extracted using chloroform and dried, to obtain 0.42 g yellow liquid polymeric compound. 4.32 g polymeric compound, dehydrated 1,4-dioxane and tetrahydrofuran were reacted, lithium aluminum hydride was injected, sodium hydroxide aqueous solution and water was added and dried. 40 ml Dry tetrahydrofuran was added to Schlenk tube with argon airflow, cooled at -78 degrees C, 0.5 ml cyclohexane and n-hexane solution were added, reacted and dehydrated. 0.8 ml dry styrene was added, stirred, 4 ml tetrahydrofuran and liquid polymeric compound were freeze-dried, benzene was added, stirred for 6 hours, methanol was injected and re-precipitated with hexane, to obtain polymer having number average molecular weight of 11800 g/mol and molecular weight distribution of 1.15.