A Multifaceted Luminescent Europium(III) Probe for the Discrimination of Nucleoside Phosphates and Detection of Organophosphate Nerve Agents.

The nucleotides play multiple fundamental roles that are essential in biochemical enzymatic reactions and signaling pathways. Many diseases are closely associated with their dysregulation. Therefore, reliable and sensitive optical probes to discriminate various nucleotides are essential in biochemistry, drug discovery, and disease diagnosis.

Photocytotoxic kinetically stable ruthenium(II)-,-donor polypyridyl complexes of oxalate with anticancer activity against HepG2 liver cancer cells.

Liver cancer is one of the leading causes of death that motivating scientists worldwide to synthesize novel chemotherapeutics. Ru(II)-polypyridyl complexes are extensively studied for possible therapeutic and cellular applications due to their tunable coordination chemistry, structural diversity, ligand-exchange kinetics, accessible redox states, and rich photophysical or photochemical properties. Herein, we have synthesized a series of Ru(II) polypyridyl complexes (1-3), where ox is oxalate (CO) and N^N is 1,10-phenanthroline (phen) (1), dipyrido[3,2-:2',3'-]quinoxaline (dpq) (2), and dipyrido[3,2,-:2',3'-]phenazine (dppz) (3).

Quaternary Ru(II) complexes of terpyridines, saccharin and 1,2-azoles: effect of substituents on molecular structure, speciation, photoactivity, and photocytotoxicity.

Six photoactive ruthenium quaternary complexes (a four-component system consisting of three different N-donor ligands and Ru(II)): -[Ru(R-tpy)(pyz/ind)(sac)] (1-6) containing substituted terpyridine (R-tpy), saccharin (sac), and monodentate N-donor heterocycles were designed. Here, R-tpy = 4'-(2-furyl (1, 2); thienyl (3, 4); pyridyl (5, 6))-2,2':6',2'' terpyridines, pyz = 1-pyrazole for 1, 3 and 5 and ind = 1-indazole for 2, 4 and 6. The azoles are present in a large number of FDA-approved clinical drugs and bioactive molecules.