Preferred specific examples of the anion moiety of the  component (d2-2) are given below.  -continued  US 9,052,592 B2  114  113  [Chemical formula 54]  0 e  0  0  Cation Moiety of Component (d2-1):  In the formula ( d2-1 ),  Mm+  represents an m-valent organic  cation.  Preferred examples of the organic cation represented by  Mm+  include the same cations as those represented by the  general formulae (ca-1) to (ca-4), respectively. Specific  examples thereof include cations represented by the formulae  ( ca-1-1) to ( ca-1-67), respectively.  The component (d2-1) may be used alone, or in combina› tion of two or more kinds thereof.  Component (d2-2)  Anion Moiety of Component (d2-2):  In the formula ( d2-2), Rd $^{2 }$represents an optionally substi› tuted cyclic group, an optionally substituted chain alkyl  group, or an optionally substituted chain alkenyl group, and  examples thereof include the same groups as those in R $^{101 }$in  the formula (b-1).  However, a fluorine atom is not bonded to (there is no  fluorine-substitution at) the carbon atom adjacent to the S  atom in Rd 2 .  According to this, the anion of the component  (d2-2) becomes an appropriately weak acid anion, whereby  the quenching ability is enhanced.  Rd $^{2 }$is preferably an optionally substituted aliphatic cyclic  group, and more preferably a ( optionally substituted) group in  which one or more hydrogen atoms are eliminated from ada› mantane, norbomane, isobornane, tricyclodecane, tetracy› clododecane, or the like; or a group in which one or more  hydrogen atoms are eliminated from camphor or the like.  The hydrocarbon group represented by Rd 2  may have a  substituent. Examples of the substituent include the same  groups as those exemplified above for the substituent which  the hydrocarbon group (aromatic hydrocarbon group or ali- phatic hydrocarbon group) in Rd$^{1 }$in the formula ( d2-1) may  have.  Above all, Rd 4  is preferably an alkyl group, an alkoxy  group, an alkenyl group, or a cyclic group, each of which may  have a substituent.  In the formula (d2-3), Rd $^{4 }$represents an optionally substi› tuted cyclic group, an optionally substituted chain alkyl  group, or an optionally substituted chain alkenyl group, and  examples thereof include the same groups as those in R $^{101 }$in  the formula (b-1).  In the formula (d2-3), Rd $^{3 }$represents an optionally substi› tuted cyclic group, an optionally substituted chain alkyl  group, or an optionally substituted chain alkenyl group, and  examples thereof include the same groups as those in R $^{101 }$in  the formula (b-1). Rd 3  is preferably a cyclic group, a chain  alkyl group, or a chain alkenyl group, each of which contains  a fluorine atom. Above all, Rd 3  is preferably a fluorinated  alkyl group, and more preferably the same fluorinated alkyl  group as that represented by Rd$^{1 }$as described above.  Anion Moiety of Component (d2-3):  Component (d2-3)  The component (d2-2) may be used alone, or in combina› tion of two or more kinds thereof.  In the formula ( d2-2),  Mm+  represents an m-valent organic  cation and is the same as  Mm+  in the formula (d2-1).  Cation Moiety of Component (d2-2) 