“…The terpyridine ligands (L [1][2][3][4][5][6][7][8][9] ) used in the present work were synthesized according to the literature, 64,65 including 4′phenyl-terpyridine(L 1 ), 4′-(4-methylsulfony-phenyl)-2,2′:6′,2″terpyridine(L 2 ), 4′-(4-carboxyl-phenyl)-2,2′:6′,2″-terpyridine(L 3 ), Fig. 12 CD spectra of complex 3 to BSA at different concentration ratios.…”