Complex compound excited by near UV and Composition having the same

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PURPOSE : A rare earth metal complex compound is provided to have remarkably excellent red light emission in near infrared rays, to be thermally stable, and to have high dispersity, thereby being capable of being used for various plastic molded products or printing.CONSTITUTION : A rare earth metal complex compound is represented by chemical formula 1. In chemical formula 1, each of A and B is a rare earth metal selected from europium, terbium, gadolinium, samarium, yttrium, neodymium, lanthanum and cerium, C is an alkali rare earth metal selected from calcium, strontium and barium, each L1, L2, L3, L4 and L5 is selected from hydrogen, a C1-8 alkyl group, aryl group, halogen group and alkoxy group, each of x and y is a real number larger than 0, and 0 COPYRIGHT KIPO 2013