Microphase-separated structure membrane and process for producing the same

A microphase-separated structure membrane comprising a block copolymer in which a hydrophilic polymer component and a hydrophobic polymer component are coupled to each other via a structural unit having a reactive group, wherein

• the hydrophilic polymer component is poly(ethylene oxide),
• the hydrophobic polymer component is poly(acrylate) or poly(methacrylate) having a mesogenic side chain;
• a cylinder structure composed of the hydrophilic polymer component lies in a matrix composed of the hydrophobic polymer component and said cylinder structure is oriented in the direction perpendicular to the membrane surface, and the structural unit having a reactive group lies between the matrix and the cylinder structure;
• and
• the structural unit having a reactive group is represented by any of the following formulae (5)-(12)and(14)-(32):
• (in the formulae, R2 represents a reactive group;
• R4 represents a cyano group or a carboxylic acid ester;
• Fu represents a fullerene;
• b and c may be the same or different and each represent an integer of 0 to 4;
• d represents an integer of 0 to 3;
• e, f, and g may be the same or different and each represent an integer of 1 to 10;
• Ar represents an aromatic hydrocarbon composed of a plurality of aromatic rings or a quinone;
• R8 represents hydrogen, an aromatic hydrocarbon, or a heterocycle;
• M represents H2 or a metal ion;
• ML represents a transition metal complex;
• Por represents a porphyrin;
• and X2 represents hydrogen, a halogen, or a phenoxy group having an alkyl group, wherein the reactive group is selected from the group consisting of the followings:
• in the formulae, R3 represents a hydrogen atom or an alkyl group)).