Modified graphene, method of producing modified graphene, modified graphene-resin composite, modified graphene sheet, and modified graphene dispersion

A modified graphene having a structure represented by formula (I), wherein the modified graphene has a ratio (g/d) of an intensity “g” of a G band to an intensity “d” of a D band of 1.0 to 2.0 in a Raman spectroscopy spectrum thereof:

• Gr1-Ar1-X1-(Y1)n1 (I)
• wherein, in the formula (I):
• Gr1 represents a single-layer graphene or a multilayer graphene,
• Ar1 represents an arylene group having 6 to 18 carbon atoms,
• X1 represents:
• a single bond,
• a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, or
• a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of —O—, —NH—,
• —CO—, —COO—, —CONH—, and an arylene group,
• Y1 represents:
• when the X1 represents a single bond, an atom or a group bonded to at least one carbon atom of the Ar1,
• when the X1 represents a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms, an atom or a group bonded to a carbon atom in the alkylene group, or
• when the X1 represents a group obtained by substituting at least one carbon atom in a linear, branched, or cyclic alkylene group having 1 to 20 carbon atoms with at least one structure selected from the group consisting of —O—, —NH—,
• —CO—, —COO—, —CONH—, and an arylene group, an atom or a group bonded to a carbon atom in the group, and
• the Y1 represents at least one atom or group selected from the group consisting of:
• a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom,
• a fluoroalkyl group having 1 to 6 carbon atoms,
• a cyano group, a nitro group, an acyl group, an amide group, a vinyl group, a carboxylic acid group, a carboxylic acid ester group, and a phosphoric acid group,
• an alkylsilyl group having 3 to 6 carbon atoms,
• an alkylsilyl ether group having 3 to 6 carbon atoms, and
• a siloxane group, and
• n1 represents an integer of 1 or more, and when the n1 is 2 or more, the Y1s may represent groups identical to each other or groups different from each other.