NOVELTY - A polymer electrolyte comprises a main-chain first and second repeating units (201) providing a primary ion coordinating site. The polymer electrolyte provides ion transport within coordinating channel (200) involving ion transport between primary ion coordinating site and secondary ion coordinating site.    USE - For ion transport in a galvanic cell (claimed).    ADVANTAGE - The electrolyte exhibits reduced temperature dependent conductivities and/or increased conductivity at ambient temperature operating conditions.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) a copolymer comprising repeating units of formula -(R1(R2-R3)-CH2-O-CH2)n)- (1) and (2);    (2) a polymer comprising a repeating unit of formula -(R1(R2-R3)-(CH2-O-CH2)- (2);    (3) a polymer blend comprising first and second copolymers comprising repeating units of formulae (1) and (2);    (4) a polymer electrolyte being configured to provide ion transport;    (5) a galvanic cell comprising a polymer electrolyte formed from a first copolymer comprising repeating units of formulae (4) and (5) and a second copolymer comprising formula -(O-(A-O)x-B)- (3);    (6) a process for the preparation of a copolymer comprising repeating units of formulae (1) and (2);    (7) a process for the preparation of the compound of formula (2); and    (8) a process for the preparation of a polymer electrolyte.    m = less than or equal to 30 and greater than or equal to 2, preferably 12, 16 or 18; and    n = 5;    A = alkylene, phenylene preferably (CH2)4;    B = alkylene, phenylene, alkylene ether, alkylene-phenylene ether, alkoxy phenylene ether or alkyl-phenylene ether, preferably a substantially straight chain hydrocarbon, preferably (CH2)m; and    x = less than or equal to 40 and greater than or equal to 20.    DESCRIPTION OF DRAWING(S) - The figure illustrates schematically the electrolyte complex arranged as a lamellar texture.    Ionic bridge polymer (101)    Coordinating channel (200)    Repeating units (201)    Side-chains (202)    Ion conducting polymer (300)