1. Department of Chemistry and Biochemistry; The University of Texas at Dallas; 800 West Campbell Road Richardson TX 75080 USA
2. Advanced Imaging Research Center; UT Southwestern Medical Center; 5323 Harry Hines Blvd. Dallas TX 75390 USA
3. Department of Inorganic and Analytical Chemistry; University of Debrecen; Egyetemtér 1 4010 Debrecen Hungary