Ion conducting polymer comprising partially branched block copolymer and use thereof

An ion conducting polymer comprising a partially branched block copolymer, wherein the partially branched block copolymer comprises a first block comprising a hydrophilic first polymer;

• a second block derived from a hydrophobic second polymer having two or more reactive groups participating in a polymerization reaction at each of its both ends to provide branching points for forming side branches on a main chain;
• and optionally a third block comprising a hydrophobic third polymer,
• which is characterized by the first block represented by Formula 1 below,
• the hydrophobic second polymer represented by Formula 2 below, and
• the third block represented by Formula 3 below:
• wherein, in Formula 1,
• A is a single bond or —(C═O)—, —(P═O)—, —(SO2)—, —CF2—, or —(C(CF3)2)— as an electron withdrawing group;
• B and B′ are each independently a single bond or —O—, —S—, —NH—, or —NR26— as an electron donating group, wherein R26 is C1-6 alkyl;
• M is H or an alkali metal;
• Ar is an aromatic molecule or a group of aromatic molecules substituted with at least one sulfonic acid group (—SO3H) or an alkali metal salt thereof;
• a and b are each an integer ranging from 0 to 10, k is an integer ranging from 1 to 4;
• and
• c is an integer ranging from 1 to 10,000,
• in Formula 2,
• D1 is a single bond, —O—, —S—, —NH—, or —NR27— (wherein R27 is C1-6 alkyl) as an electron donating group, or
• and D2 is a single bond, —O—, —S—, —NH—, or —NR27′— (wherein R27′ is C1-6 alkyl) as an electron donating group, or
• wherein G and G′ are each independently a single bond or —(C═O)—, —(P═O)—, —(SO2)—, —CF2—, or —(C(CF3)2)— as an electron withdrawing group, and J and J′ are each independently —O—, —S—, —NH—, or —NR28— as an electron donating group, wherein R28 is C1-6 alkyl;
• E is —O—, —S—, —NH—, or —NR29— as an electron donating group, wherein R29 is C1-6 alkyl;
• Ar′ is unsubstituted or substituted with at least one substituent selected from the group consisting of a halogen atom (−X), C1-6 alkyl, C1-6 halogen-substituted alkyl, C1-6 allyl, cyano, aryl, a sulfonic acid group, a phosphoric acid group (—PO3H2), an acetic acid group (—CO2H), nitro (—NO2), perfluoroalkyl, perfluoroalkylaryl, perfluoroaryl and —O-perfluoroaryl, aryl, naphthyl, anthracenyl,
• wherein the C1-6 alkyl, C1-6 perfluoroalkyl and C1-6 perfluoroalkylaryl optionally comprise at least one oxygen, nitrogen or sulfur atom in its chain, and P is a single bond, —O—, —S—, —NH—, or —NR30— (wherein R30 is C1-6 alkyl) as an electron donating group, or —(C═O)—, —(P═O)—, —(SO2)—, —CF2—, —(C(CH3)2)—, or —(C(CF3)2)— as an electron withdrawing group;
• Ar″ is unsubstituted or substituted with at least one substituent selected from the group consisting of a halogen atom, C1-6 alkyl, C1-6 halogen-substituted alkyl, C1-6 allyl, cyano, aryl, a sulfonic acid group, a phosphoric acid group, an acetic acid group, nitro, C1-6 perfluoroalkyl, C1-6 perfluoroalkylaryl, perfluoroaryl and —O-perfluoroaryl, aryl, naphthyl, anthracenyl,
• wherein the alkyl, perfluoroalkyl, and perfluoroalkylaryl optionally comprise at least one oxygen, nitrogen, or sulfur atom in its chain, and P′ is a single bond, —O—, —S—, —NH—, or —NR31— (wherein R3 is C1-6 alkyl) as an electron donating group, or —(C═O)—, —(P═O)—, —(SO2)—, —CF2—, —(C(CH3)2)—, or —(C(CF3)2)— as an electron withdrawing group;
• R1 and R1′ are each independently a hydrogen atom, a halogen atom, C1-6 alkyl, C1-6 halogen-substituted alkyl, C1-6 allyl, cyano, aryl, a sulfonic acid group, a phosphoric acid group, an acetic acid group, nitro, C1-6 perfluoroalkyl, C1-6 perfluoroalkylaryl, perfluoroaryl, or —O-perfluoroaryl, wherein the alkyl, perfluoroalkyl and perfluoroalkylaryl optionally comprise at least one oxygen, nitrogen, or sulfur atom in their chain;
• X and X′ are each independently a halogen atom;
• R2 to R21 and R2′ to R5′ are each independently a hydrogen atom, a halogen atom, C1-6 alkyl, C1-6 halogen-substituted alkyl, C1-6 allyl, cyano, aryl, a sulfonic acid group, a phosphoric acid group, an acetic acid group, nitro, C1-6 perfluoroalkyl, C1-6 perfluoroalkylaryl, perfluoroaryl, or —O-perfluoroaryl, wherein the alkyl, perfluoroalkyl, and perfluoroalkylaryl optionally comprise at least one oxygen, nitrogen, or sulfur atom in their chain;
• wherein, in Formula 1 or Formula 2, the sulfonic acid group, the phosphoric acid group, and the acetic acid group may be in the form of an alkali metal salt;
• p is an integer ranging from 1 to 1000, t and t′ are each independently an integer ranging from 2 to 5, and y and y′ are each independently an integer ranging from 0 to 3, while the combinations of numbers are represented by t+y=5 and t′+y′=5;
• and
• in Formula 3,
• D1′ and D2′ may be each introduced with a functional group in the same range as that of D1 and D2 of Formula 2, wherein each of D1 and D1′, and D2 and D2′ may be same with or different from each other;
• Ar′″ may be introduced with a functional group having the same range as that of Ar′ of Formula 2, wherein Ar″ and Ar″″ may be identical to or different from each other;
• Ar″″ may be introduced with a functional group in the same range as that of Ar″ of Formula 2, wherein Ar″ and Ar″″ may be identical to or different from each other;
• E′ is as an electron donating group and may be introduced with a functional group in the same range as that of E of Formula 2, wherein E and E′ may be identical to or different from each other;
• and
• R22 to R25 and R22′ to R25′ are each independently a hydrogen atom, a halogen atom, C1-6 alkyl, C1-6 halogen-substituted alkyl, C1-6 allyl, cyano, aryl, a sulfonic acid group, a phosphoric acid group, an acetic acid group, nitro, C1-6 perfluoroalkyl, C1-6 perfluoroalkylaryl, perfluoroaryl, or —O-perfluoroaryl, wherein the alkyl, perfluoroalkyl, and perfluoroalkylaryl optionally comprise at least one oxygen, nitrogen, or sulfur atom in their chain;
• the sulfonic acid group, the phosphoric acid group, and the acetic acid group in Formula 3 may be in the form of an alkali metal salt;
• and
• q and q′ are each independently an integer ranging from 0 to 5, and p′ is an integer ranging from 1 to 1000.