Functional porphyrins have attracted intense attention due to their remarkably high extinction coefficients in the visible region and potential for optical and energy-related applications. Two new routes to functionalised SWNTs have been established using a bulky ZnII -porphyrin featuring thiolate groups at the periphery. We probed the optical properties of this zinc(II)-substituted, bulky aryl...

HgII interacting with a naturally ZnII-containing Rad50 protein interface yields HgS4 species, the strongest metal–protein interaction known to date. It also introduces novel manifestation of mechanism prokaryotic and eukaryotic cells. Furthermore, substitution occurring ZnII possibly has an impact on quaternary structure assembly process, thus disrupting DNA-repair mechanisms that engage Mre11...

While MnII complexes meet increasing interest in biomedical applications, ligands are lacking that enable high complex stability and selectivity vs. ZnII, the most relevant biological competitor. We report here two new bispidine derivatives, which provide rigid large coordination cavities perfectly match size of MnII, yielding eight-coordinate with record stabilities. In contrast, smaller ZnII ...

The kinetics of ligand exchange at a ZnII center confined in biomimetic environment is studied. metal ion bound to TMPA unit covalently capping the calix[6]arene core....

This report describes the dimerisation of glutathione, and by extension, other cysteine-containing peptides or protein fragments, with a 5, 5'-disubstituted-2, 2'-bipyridine or 6, 6"-disubstituted-2, 2':6',2"-terpyridine unit. The resulting bipy-GS2 and terpy-GS2 were investigated as potential metal ion dependent switches in aqueous solution, and were found to predominantly adopt the transoïd c...

The asymmetric unit of the title complex, [Zn(C10H11O2)2(C6H6N2O)2(H2O)], contains one half of the complex mol-ecule, and the ZnII cation and the water O atom lie on a twofold rotation axis. The ZnII cation is coordinated by two carboxyl-ate O atoms of the two symmetry-related 2,4,6-tri-methyl-benzoate (TMB) anions and by the water O atom at distances of 2.0311 (16) and 2.076 (2) Å to form a sl...

This paper reviews recent studies of highly conductive barium iron vanadate glass with a composition of 20 BaO ∙ 10 Fe2O3 ∙ 70 V2O5 (in mol %). Isothermal annealing of the vanadate glass for several ten minutes at a given temperature, higher than glass transition temperature or crystallization temperature, caused an increase in σ. Substitution of CuI (3d10), ZnII (3d10) and CuII (3d9) for FeIII...

The title compound, poly[bis-{μ2-4,4'-bis-[(1,2,4-triazol-1-yl)meth-yl]biphenyl-κ2N4:N4'}bis-(nitrato-κO)zinc(II)], [Zn(NO3)2(C18H16N6)2] n , is a two-dimensional zinc coordination polymer constructed from 4,4'-bis-[(1H-1,2,4-triazol-1-yl)meth-yl]-1,1'-biphenyl units. It was synthesized and characterized by elemental analysis and single-crystal X-ray diffraction. The ZnII cation is located on a...

Copper and zinc play important roles in Alzheimer disease pathology with recent reports describing potential therapeutics based on modulation of metal bioavailability. We examined the ability of a range of metal bis(thiosemicarbazonato) complexes (MII(btsc), where M=CuII or ZnII) to increase intracellular metal levels in Chinese hamster ovary cells overexpressing amyloid precursor protein (APP-...