NOVELTY - An ionic liquid functional material consists of a fluoropolymer containing specific structural units (M1,M2,A1).    USE - As actuator material, solar-cell electrolyte, lubricant and deacidifying agent.    ADVANTAGE - The ionic liquid functional material has excellent oxidation resistance, stability, heat resisting property, lubricity, water insolubility and minimum viscosity.    DETAILED DESCRIPTION - An ionic liquid functional material consists of a fluoropolymer of formula: -(M1)-(M2)-(A1)-.    structural unit (M1)=structural unit whose region-D of fluorine-containing ether structure is of formula: -(O-R)n- OR -(R-O)n-, and is a structural unit derived from the fluorine-containing ethylenic monomer which does not contain basic functional group (Y1) and salt (Y2) of basic functional group, and does not contain -O-O- unit in side chain;    R=1-5C bivalent fluorine-containing alkylene whose at least one of hydrogen atom is substituted by fluorine atom;    n=1-20;    structural unit (M2)=structural unit derived from ethylenic monomer having region Ry containing basic functional group in side chain or side-chain terminal;    Ry=2-30C monovalent or divalent organic group having at least one group (Y1) and/or salt (Y2), and contains aromatic-ring like structure;and    structural unit (A1)=structural unit derived from monomer copolymerizable with monomer forms structural units (M1,M2).    The fluoropolymer contains (in mol%) structural unit (M1) (1-99), structural unit (M2) (1-99) and structural unit (A1) (0-98). An INDEPENDENT CLAIM is included for fluoropolymer of formula: -(M3)-(M4)-(A2)-.    structural unit (M3)=structural unit of formula (3);    structural unit (M4)=structural unit of formula (4);and    structural unit (A2)=structural unit derived from monomer copolymerizable with monomer forms structural units (M3,M4).    X11,X12,X14-X17,X19,X20=H or fluorine atom;    X13,X18=H, fluorine atom, methyl group or trifluoro methyl;    n5-n8=0 or 1;    D1=region of fluorine-containing ether structure, and is group of formula: -(-O-R1-)m- or -(-R1-O-)m-;    R1=1-5C bivalent fluorine-containing alkylene formed by substituting at least one hydrogen atom with fluorine atom;    m=1-20;    Rx1=H, halogen atom and/or 1-20C fluorine-containing alkyl optionally having ether bond;and    Ry1=2-30C univalent organic group having amine (Y3) and/or amine salt (Y4), and contains aromatic-ring like structure.    The fluoropolymer contains structural unit (M3) (1-99), structural unit (M4) (1-99) and structural unit (A2) (0-98).