| AUTHOR |
TITLE |
Moore, K. T.,
Fletcher, J. T.,
Therien, M. J. |
Syntheses, NMR and EPR Spectroscopy, Electrochemical Properties, and Structural Studies of [5,10,15,20-Tetrakis(perfluoroalkyl)porphinato]iron(II) and -iron(III) Complexes
Journal of the American Chemical Society; 1999; 121(22); 5196-5209. |
Experimental Section
Instrumentation. Electronic spectra were recorded on an OLIS UV/vis/NIR spectrophotometry system that is based on the optics of a Cary 14 spectrophotometer. |
LeCours, S. M.,
Phillips, C. M.,
de Paula, J. C.,
Therien, M. J. |
Synthesis, Transient Absorption, and Transient Resonance Raman Spectroscopy of Novel Electron Donor-Acceptor Complexes: [5,15-Bis[(4'-nitrophenyl)ethynyl]-10,20- diphenylporphinato]copper(II) and [5-[[4'-(Dimethylamino)phenyl]ethynyl]-15-[(4''-nitrophenyl
Journal of the American Chemical Society; 1997; 119(51); 12578-12589. (Article) |
Experimental Section
Transient Absorption Spectroscopy. Ground state electronic spectra were recorded on an OLIS UV/vis/near-IR spectrophotometry system that is based on the optics of a Cary 14 spectrophotometer. |
LeCours, S. M.,
DiMagno, S. G.,
Therien, M. J. |
Exceptional Electronic Modulation of Porphyrins through meso-Arylethynyl Groups. Electronic Spectroscopy, Electronic Structure, and Electrochemistry of [5,15-Bis[(aryl)ethynyl]- 10,20-diphenylporphinato]zinc(II) Complexes. X-ray Crystal Structures of [5,1
Journal of the American Chemical Society; 1996; 118(47); 11854-11864. (Article) |
Experimental Section<
Instrumentation. Electronic spectra were recorded on an OLIS UV/vis/NIR spectrophotometry system that is based on the optics of a Cary 14 spectrophotometer. |
Goll, J. G.,
Moore, K. T.,
Ghosh, A.,
Therien, M. J. |
Synthesis, Structure, Electronic Spectroscopy, Photophysics, Electrochemistry, and X-ray Photoelectron Spectroscopy of Highly-Electron-Deficient [5,10,15,20-Tetrakis(perfluoroalkyl)porphinato]zinc(II) Complexes and Their Free Base Derivatives
Journal of the American Chemical Society; 1996; 118(35); 8344-8354. (Article) |
Experimental Section
Instrumentation. Electronic spectra were recorded on an OLIS UV/vis/NIR spectrophotometry system that is based on the optics of a Cary 14 spectrophotometer. |
LeCours, S. M.,
Guan, H.-W.,
DiMagno, S. G.,
Wang, C.H.,Therien, M. J. |
Push-Pull Arylethynyl Porphyrins: New Chromophores That Exhibit Large Molecular First-Order Hyperpolarizabilities
Journal of the American Chemical Society; 1996; 118(6); 1497-1503. (Article) |
Experimental Section
Instrumentation. Electronic spectra were recorded on an OLIS UV/vis/NIR spectrophotometry system that is based on the optics of a Cary 14 spectrophotometer. |
Hashem, G. M.,
Pham, L.,
Vaughan, M. R.,
Gray, D. M. |
Hybrid Oligomer Duplexes Formed with Phosphorothioate DNAs: CD Spectra and Melting Temperatures of S-DNA·RNA Hybrids Are Sequence-Dependent but Consistent with Similar Heteronomous Conformations
Biochemistry; 1998; 37(1); 61-72. (Article) |
Materials and Methods<
Instrumentation. Absorbance readings were taken with a Cary-Varian Model 118 or an Olis-modified Cary 14 spectrophotometer.
Melting Profiles. Melting profiles (OD versus temperature) were obtained for the 50:50 mixtures containing the duplexes. The OD (260 nm) was monitored in the Olis-modified Cary 14 as the temperature was increased from 20 to 90° C in increments of ° C. |
Yu, A.,
Barron, M. D.,
Romero, R. M.,
Christy, M.,
Gold, B.,
Dai, J.,
Gray, D. M.,
Haworth, I. S.,
Mitas, M. |
At Physiological pH, d(CCG)15 Forms a Hairpin Containing Protonated Cytosines and a Distorted Helix
Biochemistry; 1997; 36(12); 3687-3699. (Article) |
Materials and Methods
Absorption spectra were obtained at 20° C using an Olis-modified Cary 14 spectrophotometer. |
Taraban, M.B.,
Leshina, T.V.,
Anderson, M.A.,
Grissom, C.B. |
Magnetic Field Dependence of Electron Transfer and the Role of Electron Spin in Heme Enzymes: Horseradish Peroxidase
Journal of the American Chemical Society; 1997; 119(24); 5768-5769. (Communication) |
Acknowledgement
The OLIS-RSM stopped-flow spectrophotometer was modified to place the thermostatted reaction cuvette (1.7 cm optical path) in the air gap of an electromagnet (see ref 4b). Absorbance spectra were recorded from 310 to 600 nm at a sampling rate of 1 kHz. Enzyme and substrate/peroxide solutions were kept in separate syringes prior to mixing. |
Stoll, M.E.,
Lovelace, S.R.,
Geiger, W.E.,
Schimanke, H.,
Hyla-Kryspin, I.,
Gleiter, R. |
Transannular Effects in Dicobalta-Superphane Complexes on the Mixed-Valence Class II/Class III Interface: Distinguishing between Spin and Charge Delocalization by Electrochemistry, Spectroscopy, and ab Initio Calculations
Journal of the American Chemical Society; 1999; 121(40); 9343-9351. |
| Near-IR Spectra. Near-infrared/visible spectra (600-2200 nm) of the monocations were recorded on an OLIS-modified CARY 14 spectrophotometer. All spectra were recorded in a 1 cm path length screw-top quartz cuvette at ambient temperature; a spectrum of the solvent or solvent and supporting electrolyte solution was digitally subtracted from the sample spectrum. Samples obtained from bulk electrolysis experiments were syringed out of the electrochemical cell into the cuvette once the appropriate species was formed. |
He, Q.-Y.,
Mason, A. B.,
Tam, B. M.,
MacGillivray, R. T. A.,
Woodworth, R. C. |
Dual Role of Lys206-Lys296 Interaction in Human Transferrin N-Lobe: Iron-Release Trigger and Anion-Binding Site,
Biochemistry; 1999; 38(30); 9704-9711. |
Materials and Methods
Electronic Spectra. UV-Vis spectra were recorded on a Cary 219 spectrophotometer under the control of the computer program Olis-219s (On-line Instrument Systems, Inc., Bogart, GA). Hepes buffer (50 mM, pH 7.4) served as the reference for full-range spectra from 250 to 650 nm. Difference spectra were generated by storing the spectrum of the apo-protein as the baseline and subtracting it from the sample spectra. For iron release from wild-type Fe-hTF/2N by EDTA at pH 5.6, the kinetics were determined by employing an Olis-RSM 1000 stop-flow spectrophotometer, a new generation of machine with greatly increased sensitivity. |
