Join the prestigious International Conference on Biological Inorganic Chemistry (ICBIC) in Long Beach, California in 2025. Discover the latest advancements in the field of biological inorganic chemist...

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March 25, 2025 | 3 p.m. Eastern

I shared a controversial take the other day at an event and I decided to write it down in a longer format: I’m afraid AI won't give us a compressed 21st century.

Combining a molecular thiomolybdate cluster, [Mo3S13]2−, with cadmium selenide quantum dots capped with tetraethyleneglycol monomethyl ether phosphonate (TEGPA) ligands results in a highly active…

Cobalt-mimochrome VI*a (CoMC6*a), a cobalt synthetic mini-enzyme with a cobalt porphyrin active site, is developed as a biomolecular catalyst for electrocatalytic CO2 reduction in water. The catalytic...

The House Committee on Science, Space and Technology

Firings at the NSF included permanent employees who had already completed their one-year probationary period, as well as at-will workers.

The elucidation of factors that govern the temperature sensitivity of the electrochemical potential is essential to the development of electrochemical systems with target properties. Toward this end, we report a series of isostructural homo- and heterometallic M2 (M = FeII, FeIII, ZnII) complexes supported by a phenoxo-centered tetrapyridyl ligand and ancillary carboxylate ligands that enables independent change in (i) charge, (ii) coordination environment of the redox-active center(s), and (iii) electronic coupling strength between redox centers. Variable-temperature electrochemical analysis of the series reveals the temperature coefficient for Fe-based redox couples to be highly dependent on the coordination environment of the redox-active center(s), with Fe centers in a pseudo-octahedral [FeN3O3] coordination environment affording a 2-fold greater temperature coefficient for the FeIII/FeII redox couple than those in ancillary ferrocenyl groups. In contrast, identical temperature coefficients for the FeIII/FeII redox event in Fe2 and FeZn complexes establish electronic coupling strength to have a minimal impact on the temperature dependence of the Fe-based redox couple. Taken together, these results provide important insights for the design of molecular compounds with target redox properties, and they provide the first examination of how electronic coupling influences the temperature dependence of the redox potential and the associated redox entropy in molecular compounds.