Patent ID: 7875287

Claim:
An arylpiperazine derivative represented by the following Chemical Formula 1: wherein, X, Y, and Z are selected from the group consisting of (a), (b), (c), (d), and (e): (a) X, Y, Z=H, C(OCH 3 ), CH; (b) X, Y, Z=OCH 3 , CH, CH; (c) X, Y, Z=H, C(Cl), CH; (d) X, Y, Z=H, N, CH; (e) X, Y, Z=H, N, N; and Ch is a chelating ligand selected from the group consisting of wherein R is selected from the group consisting of: —CH 3 , —C 2 H 5 , —C 3 H 7 and —C 4 H 9 .