Composite material including COF, heat dissipation/storage member, and method for producing said composite material, and COF single crystal and production method therefor

A method for producing a covalent organic framework (COF) single crystal, the method comprising:

• preparing a solution (A) by dissolving a first raw material compound and an equilibrium adjusting agent in an aqueous solvent or a non-aqueous solvent, wherein the first raw material compound is an aldehyde having a plurality of formyl groups in one or more aromatic rings, and wherein the equilibrium adjusting agent is an aldehyde having a single formyl group or an amine having a single amino group;
• preparing a solution (B) by dissolving a second raw material compound in an aqueous solvent or a non-aqueous solvent, wherein the second raw material compound is an amine having a plurality of amino groups in one or more aromatic rings;
• preparing a solution (C) comprising an ionic liquid or an organic salt and an acid catalyst other than a cation of the ionic liquid or the organic salt;
• mixing the solution (A) and the solution (C) to obtain a mixed solution;
• and
• performing a single crystal production step by adding the solution (B) to the mixed solution and reacting the first raw material, the second raw material, the ionic liquid or the organic salt, and the equilibrium adjusting agent to grow the COF single crystal at a temperature of 10° C. to 60° C. in about 1 to 30 days,
• wherein an amount of the equilibrium adjusting agent is 2 to 200 mole with respect to 1 mole of a total amount of the first raw material compound and the second raw material compound,
• wherein an amount of the ionic liquid or the organic salt is 0.1 to 10 mol with respect to 1 mol of a total amount of the aldehyde having a plurality of formyl groups in one or more aromatic rings and the amine having a plurality of amino groups in one or more aromatic rings,
• wherein a Lewis acidity of a cation of the ionic liquid or the organic salt is equal to that of methyltrioctylammonium, and a Lewis basicity of an anion of the ionic liquid or the organic salt is between or equal to that of chloride and that of bistrifluoromethanesulfonylimide, or
• wherein a Lewis acidity of a cation of the ionic liquid or the organic salt is between or equal to that of methyltrioctylammonium and that of tributylmethylphosphonium, and a Lewis basicity of an anion of the ionic liquid or the organic salt is between or equal to that of iodide and that of bistrifluoromethanelsulfonylimide.