Browsing by Subject "Molecular vibrations"

Article

The Active Site Structure of Heme a3 3+-C≡N-CuB2+ of Cytochrome aa 3 Oxidase as Revealed from Resonance Raman Scattering

Pinakoulaki, Eftychia; Vamvouka, M.; Varotsis, Constantinos (2003)

Resonance Raman and FTIR spectroscopies have been employed to investigate the structure of the heme a3-C≡N-CuB complex of oxidized cytochrome aa3 oxidase. The characterization of this complex is essential since a central ...

Article

Femtosecond UV pump/near-IR probe studies of the solvent-dependent excited-state decay dynamics of chlorine dioxide

Hayes, Sophia C.; Cooksey, C. C.; Wallace, P. M.; Reid, P. J. (2001)

The excited-state decay and geminate-recombination dynamics of chlorine dioxide (OClO) are investigated using UV pump/near-IR probe spectroscopy. Experiments are performed with 200-fs time resolution on OClO dissolved in ...

Article

Fourier transform infrared evidence for a ferric six-coordinate nitrosylheme b3 complex of cytochrome cbb3 oxidase from Pseudomonas stutzeri at ambient temperature

Stavrakis, Stavros; Pinakoulaki, Eftychia; Urbani, A.; Varotsis, Constantinos (2002)

We report the first vibrational study of NO bound to an oxidized heme-copper oxidase. Cytochrome cbb3 oxidase from P. stutzeri reduces both O2 and NO to H2O and N2O, respectively. The ferric nitrosyl complex of cbb3 exhibits ...

Article

Inelastic electron tunneling erases coupling-pathway interferences

Skourtis, Spiros S.; Waldeck, D. H.; Beratan, David N. (2004)

Theoretical analysis of nonadiabatic electron-transfer reactions in molecules usually assumes that electron amplitude propagates coherently from the reductant to the oxidant via covalent and noncovalent coupling pathways. ...

Article

The production and decay kinetics of CIOO in water and freon-11: A time-resolved resonance Raman study

Hayes, Sophia C.; Thomsen, C. L.; Reid, P. J. (2001)

The production and decay kinetics of ClOO in water and freon-11 were studied using time-resolved resonance Raman (TRRR) spectroscopy. The formation of ClOO following OClO photoexcitation at 390 nm was investigated using ...

Article

Time resolved infrared absorption studies of geminate recombination and vibrational relaxation in OCIO photochemistry

Bolinger, J. C.; Hayes, Sophia C.; Reid, P. J. (2004)

The first ultrafast time-resolved infrared absorption studies of the geminate recombination and vibrational relaxation dynamics of aqueous chlorine dioxide (OCIO) were presented. The rapid increase in optical density ...