Track topics on Twitter Track topics that are important to you
We report on the ultrafast photodynamics of an iron(II) complex with a photo-isomerizable pentadentate azo-tetrapyridylamino ligand after irradiation with ultraviolet (UV) light. The results of femtosecond transient electronic absorption spectroscopy (TEAS) performed on the low-spin (LS) form of the title complex show that initial excitation of the ππ* state of the azopyridine unit in the ligand at λ = 312 nm is followed by an ultrafast intersystem crossing (ISC) that leads to the formation of a metal-centered (MC) T state, in competition with the intended photoswitching of the azopyridine unit. Additional measurements carried out upon excitation of the singlet metal-to-ligand charge transfer (MLCT) transition at λ = 455 nm suggest that this energy transfer occurs via a MLCT state. The resulting high-spin (HS) T state of the complex is metastable and recovers to the LS ground state with a time constant of ~3 ns. The implications of these observations on the LD-LISC (ligand-driven light-induced spin change) concept are discussed.
This article was published in the following journal.
Name: The journal of physical chemistry letters
The structure and ultrafast photodynamics of ~8 nm Au@Pt core-shell nanocrystals with ultrathin (
We report the syntheses of 2-pyridylimido complexes of tantalum and niobium by N═N bond cleavage of 2,2'-azopyridine. Reaction of MCl (M = Ta and Nb) with 2,2'-azopyridine in the presence of 0.5 equ...
To compare the therapeutic efficacy of Ferrous ascorbate (FA) and Iron polymaltose complex (IPC) in Iron deficiency anemia (IDA) in children.
Single-shot ultrafast photography is a powerful tool for science research and industry applications. In this Letter, a novel strategy for ultrafast imaging of two-dimensional complex (amplitude and ph...
The trace element iron plays important roles in biological systems. Vital functions of both host organisms and pathogens require iron. During infection, the innate immune system reduces iron availabil...
The study aims at assessing the iron (Fe) bioavailability from a newly developed iron compound - an iron fatty acid complex. The iron from the compound is hypothesized to have a higher abs...
The purpose of this study is to determine the smallest dose of Sprinkles, a single-serving package of iron and other micronutrients, to treat infants with iron deficiency anemia in India. ...
The general activity of Takayasu vasculitis is correlated with the perfusion rate of the carotid arterial wall. This can be quantified with ultrafast ultrasound imaging in sensitive Dopple...
This study compares the effect of Ferrlecit® (a form of intravenous iron) to ferrous sulfate (a form of oral iron) in treating anemia and iron deficiency in chronic kidney disease patient...
Iron deficiency is still the most common and widespread nutritional disorder in the world according to WHO. In a recent iron absorption study in adult women with low iron stores in our la...
Iron or iron compounds used in foods or as food. Dietary iron is important in oxygen transport and the synthesis of the iron-porphyrin proteins hemoglobin, myoglobin, cytochromes, and cytochrome oxidase. Insufficient amounts of dietary iron can lead to iron-deficiency anemia.
Complex of iron atoms chelated with carbonyl ions.
A complex of ferric oxyhydroxide with dextrans of 5000 to 7000 daltons in a viscous solution containing 50 mg/ml of iron. It is supplied as a parenteral preparation and is used as a hematinic. (Goodman and Gilman's The Pharmacological Basis of Therapeutics, 8th ed, p1292)
A multifunctional iron-sulfur protein that is both an iron regulatory protein and cytoplasmic form of aconitate hydratase. It binds to iron regulatory elements found on mRNAs involved in iron metabolism and regulates their translation. Its rate of degradation is increased in the presence of IRON.
A multifunctional iron-sulfur protein that is both an iron regulatory protein and cytoplasmic form of aconitate hydratase. It binds to iron regulatory elements found on mRNAs involved in iron metabolism and regulates their translation. Its RNA binding ability and its aconitate hydrolase activity are dependent upon availability of IRON.