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  • 1
    Electronic Resource
    Electronic Resource
    One- and two-color polarization effects induced in emission and absorption spectra of monomeric and dimeric chlorophyll a in solution (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 4093-4100 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The results of polarization measurements are reported for a chlorophyll a dimer in solution. The experiments were conducted with a single laser beam (depolarization measurements) and two laser beams. In the latter case, the wavelength of one of the lasers is tuned to an absorption band of one of the constituent molecules of the dimer, that of the other is tuned to the absorption band of the other molecule. One of these beams produces effective population saturation of an excited state of one of the molecules of the dimer which has an appropriate transition moment parallel to the electric vector of the pump beam. The other, but weaker, laser beam probes either the resonance Raman or the absorption spectrum of the other molecule of the loosely bonded dimer. As a direct result of the slow rotational relaxation time of the dimer in comparison to the duration of the laser pulse, an anisotropy is created in the absorption as well as the resonance Raman spectrum probed with the weaker laser beam. The anisotropy measurements yield information on the direction of the principal axes of polarizability and transition moments of the constituent molecules of the dimer. In turn, this information can be used to predict structural properties of the dimer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457769
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  • 2
    Electronic Resource
    Electronic Resource
    Correlation states of ethylene (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 6385-6399 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: High resolution synchrotron photoelectron spectra (PES) of ethylene have been obtained at several photon energies in the range 30 to 220 eV. Further evidence is presented that the correlation (satellite) peak at 27.4 eV binding energy is "intrinsic'' in nature. A new correlation peak at 21.4 eV binding energy, however, is found to be a "dynamic'' correlation. Several PES of 1-13C-ethylene have also been obtained and have been found to be identical to those of normal ethylene. Both of the correlation peaks are also present in the labeled species with similar photon energy behaviors. Sophisticated theoretical calculations are found to agree quantitatively with the experimental PES spectra. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469354
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  • 3
    Electronic Resource
    Electronic Resource
    Correlation states of propene (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 4295-4306 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: High resolution synchrotron photoelectron spectra (PES) of propene (C3H6) have been obtained at several photon energies (40–70 eV). The full valence shell binding energy spectrum reveals a well resolved correlation (satellite) peak at 20.3 eV and the photon energy dependence study of its photoionization cross section indicates that this new correlation peak is a "dynamic" correlation peak. MRSDCI calculations of the theoretical spectrum show semi-quantitative agreement between experiment and theory in terms of binding energies and intensities. A comparison of the full valence shell photoelectron spectra of ethylene, propene, 1-butene and 1,2-propadiene (allene) is also presented to illustrate trends in the correlation peaks of model alkenes. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.474770
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  • 4
    Electronic Resource
    Electronic Resource
    A two-colour Raman polarization experiment and structure of a chlorophyll dimer in solutionResearch supported by the Natural Sciences and Engineering Council of Canada. (1989)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 20 (1989), S. 705-706 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250201012
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