Surface-modified nanodiamond and its producing method
AssigneeDaicel Chemical Industries, Ltd.
InventorsNaoki Komatsu, Masaaki Ito
Life of this patent
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Abstract
A surface-modified nanodiamond includes a base nanodiamond, and at least one polyglycerol-chain-containing group present on at least a surface portion of the base nanodiamond, in which the polyglycerol-chain-containing group is represented by following Formula (1): —X—R (1) wherein X represents single bond, —NH—, —O—, —COO—, —PH(═O)O—, or —S—; and R represents a polyglyceryl group. X may be single bond or —NH—. The surface-modified nanodiamond is highly soluble or dispersible satisfactorily stably in water and/or polar organic solvents.
Claims7
A surface-modified nanodiamond comprising a base nanodiamond and at least one polyglycerol-chain-containing group present on at least a surface portion of the base nanodiamond, the polyglycerol-chain-containing group represented by following Formula (1):
- —X—R ™(1)
- wherein X represents one member selected from the group consisting of single bond and —PH(═O)O—;
- and R represents a polyglyceral group.
A method for producing a surface-modified nanodiamond, the surface-modified nanodiamond including a base nanodiamond;
- and at least one polyglycerol-chain-containing group present on at least a surface portion of the base, nanodiamond, the at least one polyglycerol-chain-containing group represented by following Formula (1):
- —X—R ™(1)
- wherein X represents one member selected from the group consisting of single bond and —PH(═O)O—;
- and R represents a polyglyceryl group,
- the method comprising the step of:
- subjecting glycidol to ring-opening addition polymerization with a nanodiamond or with a surface-modified nanodiamond including a base nanodiamond and at least one group present on at least a surface portion of the base nanodiamond and represented by following Formula (2):
- —X1—H (2)
- wherein X1 represents —PH(═O)O—.
Dependencies are inferred from the claim text.