Fullerene derivative, fluororesin composition, and lubricant
A fullerene derivative of the present invention has a fullerene skeleton and a plurality of perfluoropolyether chains in a molecule, wherein the perfluoropolyether chains are bonded to the fullerene skeleton via methano groups, and a lubricant and fluororesin composition of the present invention contain the derivative.
1. A fullerene derivative comprising, in a molecule,
a fullerene skeleton; and
a plurality of perfluoropolyether chains linked to the fullerene skeleton via a carbon atom bonded to the fullerene skeleton at two locations,
wherein the fullerene derivative is a compound represented by the following general formula (1):
wherein FLN represents a fullerene skeleton, A represents a group having a perfluoropolyether chain, R 1 represents an aryl group having at most 24 carbon atoms, m is an integer of 0 to 5, and n is an integer of 2 to 5.
2. The fullerene derivative according to claim 1 , comprising 2 to 5 perfluoropolyether chains linked to the fullerene skeleton.
3. The fullerene derivative according to claim 1 , wherein the fullerene skeleton is C60.
4. The fullerene derivative according to claim 1 ,
wherein the perfluoroether chains have at least one partial structure selected from the group consisting of —(CF 2 O) x —, —(CF 2 CF 2 O) x —, —(CF 2 CF 2 CF 2 O) x —, —(CF 2 CF 2 CF 2 CF 2 O) x —, and —(CF 2 (CF 2 ) 3 CF 2 O) x —:
(with the proviso that in the formula, x is an integer of 1 to 50).
5. The fullerene derivative according to claim 1 ,
wherein the perfluoroether chains have a partial structure represented by —(CF 2 CF 2 O) y (CF 2 O) z —:
(with the proviso that in the formula, y and z are integers of 1 to 50).
6. A fluororesin composition comprising the fullerene derivative according to claim 1 .
7. A lubricant comprising the fullerene derivative according to claim 1 .
8. The lubricant according to claim 7 , further comprising a perfluoropolyether compound having no fullerene skeleton.