| 简介 |
PROBLEM TO BE SOLVED : To provide a fluorescent light image-formed article which has a fluorescent light image formed on the article requiring the prevention of counterfeit and having a high emission intensity and has a high security level.
SOLUTION : This fluorescent light image-formed article is characterized in that a fluorophor contained in the image formed on a substrate is a rare earth element complex containing a compound represented by formula (1) [X and Y are each an identical or different atom selected from the group consisting of O, S, and Se; R1 to R4 are each a ≤20C linear or branched structure-having alkyl or alkoxy, phenyl, biphenyl, naphthyl, heteroring group, and their substitution products; (n) is an integer of 2 to 20; Z and W are each an identical or different group selected from the group consisting of H, deuterium, halogen atoms, and alkyl groups] as a ligand.
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