Low temperature photolysis of nitric oxide from the nitrosyl complexes of ferric myoglobin (NO-Fe(III)Mb) and manganese(II)-porphyrin-substituted myoglobin (NO-Mn(II)Mb) was examined by electron paramagnetic resonance (EPR) spectroscopy in order to elucidate the electronic and structural natures of the photoinduced intermediates of these hemoprotein-ligand complexes trapped at low temperature. ...

Combined coordination of Zn(II) and Cu(I) or Cu(II) to the amyloid-β peptide has been investigated using XANES, EPR and NMR spectroscopies. While Zn(II) does alter Cu(II) binding to Aβ, this has no effect on (Aβ)Cu induced ROS production and associated cell toxicity.

The cover feature image illustrates two sites of a protein with different site specific reorientational dynamics (purple). Such differences can be measured by newly developed site-directed Cu(II) labeling methodology. resultant EPR lineshape at physiological temperatures is sensitive to the timescale backbone motion. Importantly, this methodology enables site-specific detection on both α-helice...

To investigate the electromagnetic interaction of molecules inside the nanotubes, first, the structure of nanotubes B16N16 was optimized with hybrid density functional theory (B3LYP) using the EPR-II basis set, then Cu, Cu+, Cu++ were located in nanotube and we studied the total energy, band gap energy, electrical potential, changes of band gap energy in terms of total energy and dipole moment ...

An optical Einstein-Podolsky-Rosen ~EPR! state is produced in the spontaneous parametric downconversion of an ultrashort classical pump pulse. It is shown both theoretically and experimentally that this results in the violation of a Bell-type inequality of the kind proposed by Grangier et al. The experiment is based on measuring interference between the light in the EPR state and weak light pul...

A new series of vanadyl(IV), manganese(II), iron(II), nickel(II) and copper(II) complexes of N-[phenyl(pyrrolidin-1-yl)methyl]benzamide(PBB) have been synthesized and characterized by elemental analysis, molar conductance, IR, electronic, EPR spectra and magnetic measurements. Conductance measurements indicate that the above complexes are non-electrolytes. The spectral data show that, the ligan...

We previously reported a preliminary mechanistic study of aerobic Cu(OAc)(2)-catalyzed methoxylation of 4-tolylboronic ester (King, et al. J. Am. Chem. Soc., 2009, 131, 5044-5045), which revealed that aryl transmetalation from the boronic ester to Cu(II) is the turnover-limiting step. In the present study, more-thorough kinetic and spectroscopic studies provide additional insights into transmet...

We study the X -band EPR spectra of Co in single crystalline Zn1 xCoxO (x = 0.001–0.075) thin films grown by plasma-assisted molecular beam epitaxy. By analyzing the EPR linewidth behavior we argue that the exchange-narrowing model, usually applied to Mn-based II-VI DMS, fails here and that a combined effect of exchange and dipolar broadening can explain the linewidth variation with Co content ...