| abstract |
It is a sulfonate represented by the following general formula (1). (R f is each independently a fluorine atom or a perfluoroalkyl group having 1 to 3 carbon atoms, R 1 is a linear or branched alkyl group having 1 to 8 carbon atoms, R 2 is independently a hydrogen atom, a fluorine atom, Or a linear or branched alkyl group having 1 to 8 carbon atoms which may be substituted with a fluorine atom, m represents an integer of 0 to 3, n represents an integer of 1 to 3. M k + represents a positive k-valent atom. Represents an ion, and k represents an integer of 1 to 4.) |