Zinc coordination to the bapbpy ligand in homogeneous solutions and at liposomes: zinc detection via fluorescence enhancement

Abstract

In this work, the complexation of the bapbpy ligand to zinc dichloride is described (bapbpy = 6,6'-bis(2-aminopyridyl)-2,2'-bipyridine). The water-soluble, colorless complex [Zn(bapbpy)Cl]Cl·2H 2 O (compound 2·H 2 O) was synthesized; its X-ray crystal structure shows a mononuclear, pentacoordinated geometry with one chloride ligand in apical position. Upon excitation of its lowest-energy absorption band

Electrocatalytic Hydrogen Evolution with a Cobalt Complex Bearing Pendant Proton Relays: Acid Strength and Applied Potential Govern Mechanism and Stability

“…Synthesis, UV−vis Properties, and Structural Information. Metalation of the 6,6′-bis(2-aminopyridyl)-2,2′bipyridine (bapbpy) ligand 29,30 S1).…”

From non-innocent to guilty: on the role of redox-active ligands in the electro-assisted reduction of CO2 mediated by a cobalt(ii)-polypyridyl complex

“…1A) and its cobalt complex were synthesized according to published procedures. 55,58 Interestingly, two sets of single crystalsvarying slightly in their colorssuitable for Xray analysis were obtained by layering of diisopropyl ether over a methanolic solution of the complex. The structure determined for the dark golden crystals of [Co II (bapbpy)Cl] + [1-Cl] + (Fig.…”

Zn2+ Induced Irreversible Aggregation, Stacking, and Leakage of Choline Phosphate Liposomes

“…For example, Hg 2+ strongly binds to PE lipids resulting in the leakage of PE-containing liposomes as demonstrated by Lu and co-workers . Na + binding to negatively charged membranes was studied by dynamic light scattering (DLS) and isothermal titration calorimetry (ITC). , Finally, fluorescent ligands were also inserted in liposomes for metal detection. , …”

“…28,29 Finally, fluorescent ligands were also inserted in liposomes for metal detection. 30,31 Most of the above studies focused on serine, amine, and carboxyl groups for metal binding. The phosphate group is ubiquitous in phospholipids, which however has been overlooked in most studies involving transition metals.…”