| abstract |
The conventional matting agent does not have a matting ability to sufficiently suppress the degree of fluorescence emission of a compound having fluorescence. Accordingly, an object of the present invention is to provide a matting agent which can sufficiently fluoresce a fluorescent compound such as a xanthene-based dye. The present invention relates to a matting agent or the like comprising a compound represented by the following formula (1). □{式中,R5nEach independently represents a halogen atom, an alkyl group, an alkoxy group, an alkylthio group, a substituted or unsubstituted amino group, a hydroxyl group, an aryl group, an aryloxy group or an arylalkyl group, R6na group having a polymerizable unsaturated group, a hydroxyl group, etc., Y1nIndicates an oxygen atom, etc., An-nExpress anion, Ar1nRepresents a specific ring structure, * and ** indicate the bond position, Ar2nIndicates a benzene ring, a naphthalene ring or an anthracene ring, n1nRepresenting a specific integer; wherein the following structure (1-10) in the general formula (1) is an asymmetric structure; □ (wherein, R5n, Y1n, Ar1n, Ar2n, n1n, * and ** are the same as above)} |