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Examines excited-state dynamics in an iron(II) polypyridyl complex using static, nanosecond and femtosecond spectroscopies. Formation of metal-to-ligand charge transfer excited; Identification of spectroscopic signatures for the initial and long-lived excited states; Analysis of single-wavelength kinetics data; Interpretation of ultrafast intersystem crossing.

Presents a laser photolysis study of the 5T2 *** 1A1 intersystem crossing in the ligand [Fe(t-tpchxn)](ClO4)2. Crystal structure of the complex; Relaxation kinetics; Molecular mechanism of 5T2 *** 1A1 relaxation processes.

Examines two different intersystem crossing processes of low-spin polypyridyl ferrous complexes. 5T2 state resulting from photoexcitation as a general feature; Rate of formation; Reasons for fast intersystem crossing; Mechanistic implications.

The article analyzes the high-affinity binding and direct electron transfer using Shewanella oneidensis cytochrome OmCA. Researchers have shown that purified OmcA binds and densely covers the surface of hematiteand reduces Fe (III) with maximal velocity. It corresponds to an electron flux that approaches observed fluxes in the most efficient bioreactors.