Nanosecond time-resolved

Pibel C D, Sirota E, Brenner J and Dai H L 1998 Nanosecond time-resolved FTIR emission spectroscopy monitoring the energy distribution of highly vibrationally excited molecules during collisional deactivation J. Chem. Phys. 108 1297-300... [Pg.1176]

Yuzawa T, Kate C, George M W and Hamaguchi H O 1994 Nanosecond time-resolved infrared spectroscopy with a dispersive scanning spectrometer Appl. Spectrosc. 48 684-90... [Pg.2969]

Varotsis C and Babcock G T 1993 Nanosecond time-resolved resonance Raman spectroscopy/Mef/rods Enzymol. 226 409-31... [Pg.2970]

V. Srajer, T. Teng, T. Ursby, C. Pradervand, Z. Ren, S. Adachi, W. Schildkamp, D. Bourgeois, M. WuRf, and K. Moffat, Photolysis of the carbon monoxide complex of myoglobin nanosecond time-resolved crystallography. Science 274, 1726-1729 (1996). [Pg.284]

Ware WR, Lee SK, Brant GJ, Chow PP (1970) Nanosecond time-resolved emission spectroscopy spectral shifts due to solvent-solute relaxation. J Chem Phys 54 4729 1737... [Pg.222]

Mitchell, A. C., Wall, J. E., Murray, J. G. and Morgan, C. G. (2002). Measurement of nanosecond time-resolved fluorescence with a directly gated interline CCD camera. J. Microsc. 206, 233-8. [Pg.107]

Nanosecond time-resolved crystallography of MbCO has been discussed in Section 3.7.2.3 of Chapter 3.46 After firing a 10-ns burst of laser light to break the CO-Fe bond, these researchers produced a diffraction image of the crystal through application of a 150-ps X-ray pulse. They are able to show release of the CO molecule, displacement of the Fe ion toward the proximal histidine, and recombination of the dissociated CO by about 100 ps. Essentially their results compare well with other spectroscopic studies of HbCO, MbCO and their models. [Pg.184]

Hennig A, Florea M, Roth D, Enderle T, Nau WM (2007) Design of peptide substrates for nanosecond time-resolved fluorescence assays of proteases 2,3-diazabicyclo[2.2.2]oct-2-ene as a noninvasive fluorophore. Anal Biochem 360 255-265... [Pg.36]

Ware W. R., Lee S. K., Brant G. J. and Chow P. P. (1971) Nanosecond Time-Resolved Emission Spectroscopy Spectral Shifts due to Solvent-Excited Solute Relaxation, J. Chem. Phys. 54, 4729-4737. [Pg.225]

L. Brand and J. R. Gohlike, Nanosecond time-resolved fluorescence spectra of a protein-dye complex, J. Biol. Chem. 246, 2317-2324 (1971). [Pg.111]

J. H. Easter, R. P. DeToma, and L. Brand, Nanosecond time-resolved emission spectroscopy of a fluorescence probe adsorbed to L-a-egg lecithin vesicles, Biophys. J. 16, 571-583 (1976). [Pg.269]

The photophysical properties of [Ru(TBP)(CO)(EtOH)], [Ru(TBP)(pyz)2], [Ru(TBP)(pyz)] (Fl2TBP = 5,10,15,20-tetra(3,5-tert-butyl-4-hydroxyphenyl)porphyrin) have been investigated by steady-state and time-resolved absorption and emission spectroscopies. The complexes are weakly luminescent, and the origins of this behavior is discussed.Transient Raman spectroscopic data have been reported for [Ru(TPP)(py)2], [Ru(TPP)(CO)(py), and [Ru(TPP)(pip)2] (pip = piperidine),and nanosecond time-resolved resonance Raman spectroscopy has been used to examine the CT excited states of [Ru(0EP)(py)2] and [Ru(TPP)(py)2]. " ... [Pg.652]

Nanosecond Absorption Spectroscopy Absorption apparatus, 226, 131 apparatus, 226, 152 detectors, 226, 126 detector systems, 226, 125 excitation source, 226, 121 global analysis, 226, 146, 155 heme proteins, 226, 142 kinetic applications, 226, 134 monochromators/spectrographs, 226, 125 multiphoton effects, 226, 141 nanosecond time-resolved recombination, 226, 141 overview, 226, 119, 147 probe source, 226, 124 quantum yields, 226, 139 rhodopsin, 226, 158 sample holders, 226, 133 singular value decomposition, 226, 146, 155 spectral dynamics, 226, 136 time delay generators, 226, 130. [Pg.6]

Probing Metalloproteins Electronic absorption spectroscopy of copper proteins, 226, 1 electronic absorption spectroscopy of nonheme iron proteins, 226, 33 cobalt as probe and label of proteins, 226, 52 biochemical and spectroscopic probes of mercury(ii) coordination environments in proteins, 226, 71 low-temperature optical spectroscopy metalloprotein structure and dynamics, 226, 97 nanosecond transient absorption spectroscopy, 226, 119 nanosecond time-resolved absorption and polarization dichroism spectroscopies, 226, 147 real-time spectroscopic techniques for probing conformational dynamics of heme proteins, 226, 177 variable-temperature magnetic circular dichroism, 226, 199 linear dichroism, 226, 232 infrared spectroscopy, 226, 259 Fourier transform infrared spectroscopy, 226, 289 infrared circular dichroism, 226, 306 Raman and resonance Raman spectroscopy, 226, 319 protein structure from ultraviolet resonance Raman spectroscopy, 226, 374 single-crystal micro-Raman spectroscopy, 226, 397 nanosecond time-resolved resonance Raman spectroscopy, 226, 409 techniques for obtaining resonance Raman spectra of metalloproteins, 226, 431 Raman optical activity, 226, 470 surface-enhanced resonance Raman scattering, 226, 482 luminescence... [Pg.457]

Srajer, V., Teng, T. Y, Ursby, T., Pradervand, C., Ren,Z., Adachi, S., Schildkamp, W., Bourgeois, D., Wulff, M., and Moffatt, K. 1996. Photolysis of the carbon monoxide complex of myoglobin Nanosecond time-resolved crystallography. Science 274 1726-29. [Pg.32]

Cole JM, Raithby PR, Wulff M, Schotte F, Plech A, Teat SJ, Bushnell-Wye G (2002) Nanosecond time-resolved crystallography of photo-induced species case smdy and instrument development for high-resolution excited-state single-crystal structure determination. Faraday Discuss 122 119-129... [Pg.127]

Direct observation of singlet (alkyl)carbenes usually requires matrix isolation conditions. " Using the 7i-donor and a-attractor methoxy substituent, Moss and co-workers could characterize the (methoxy)(methyl)carbene (MeOCMe) by ultraviolet (UV) and infrared (IR) spectroscopies, but only in a nitrogen matrix (at 10 K) or in solution thanks to a nanosecond time-resolved LFP technique (fi/2 < 2ps at 20 °C). The remarkable stability of carbene XlVa both in the solid state and in solution (no degradation observed after several weeks at room temperature), prompted us to investigate the preparation of (phosphino)(alkyl)carbenes. [Pg.345]

Nanosecond time resolved infrared (TRIR) spectroscopy has recently become available to physical organic chemists. This spectroscopy is an attractive tool for studying carbonyl nitrenes. Such work is in progress in several laboratories ... [Pg.516]

Nanosecond Time-Resolved Fluorescence Spectroscopy in the Physical Chemistry Laboratory Formation of Pyrene Excimer in Solution 16... [Pg.121]

Nanosecond time-resolved experiments allowed for the rationalization of the lower efficiency of the cobalt-based couples with respect to iodide/iodine and for the clarification of their structure-dependent performance. Figure 17.23a shows the decay of the photogenerated N3 dye cation, observed at 480 nm in the presence of Co (DTB)32 + 0.1M and AI0.1M in both cases, 2/ of about 0.35 /rs indicates that dye regeneration by iodide and by Co(II) occurs at a very similar rate. Upon Li+... [Pg.548]

In conclusion, TIRF promises to be exceedingly useful in the study of protein-substrate interactions. It gives in situ, possibly remote, real-time information about protein adsorption-desorption parameters, conformational changes upon adsorption and hopefully, nanosecond time-resolved fluorescence lifetime information about adsorbed proteins 156). [Pg.52]

Sulfoximine- and phenanthrene-based IV-alkoxyaziridines decompose under photochemical conditions to give oxynitrenes.80 The first EPR spectra of oxynitrenes were reported and were consistent with triplet ground states. Trapping and reactivity studies, nanosecond time-resolved IR investigations, and computational studies all support a triplet ground state. [Pg.168]

The advent of nanosecond time-resolved fluorimetry in the late 1970s and early 1980s made it possible to obtain fluorescence lifetimes of the prototropic forms as a function of proton concentration. Dynamic analysis at nanosecond resolution enabled a more accurate estimation of pK a values. Phenomenon like pro-ton-induced fluorescence quenching in naphthylamines could then be given a satisfactory explanation. Shizuka s review [18] in 1985 summarizes the dynamic analysis techniques that were employed. Certain intermolecular proton-transfer... [Pg.578]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...