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    Electronic spectroscopy, stimulated emission, and persistent spectral hole burning of cryogenic nitrogen matrices doped with tetrabenzoporphin


    Arabei, Serguei and Galaup, Jean-Pierre and McCaffrey, John G. and Shafizadeh, Niloufar and Crepin, Claudine (2012) Electronic spectroscopy, stimulated emission, and persistent spectral hole burning of cryogenic nitrogen matrices doped with tetrabenzoporphin. Low Temperature Physics, 38 (8). pp. 727-731. ISSN 1063-777X

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    Abstract

    This paper deals with our on-going work on the electronic spectroscopy of tetrapyrrole molecules embedded in cryogenic hosts. Under nanosecond laser excitation of free-base tetrabenzoporphin molecules in a nitrogen matrix at 8K, increasing laser pulse energy results in essential enhancement of the intensity of one or several vibronic emission lines in the fine-structure fluorescence spectrum. Some characteristics of stimulated radiation are realized in the observed intense monochromatic radiation as a result of a transition from the purely electronic S1 level to a vibrational sublevel of the S0 state, corresponding to the excitation of C–C stretching vibrations of tetrapyrrole methane bridges. We also report on persistent spectral hole-burning effects. Hole and antihole formation analysis gives some insight on the photochemical properties of tetrabenzoporphin in a nitrogen matrix.

    Item Type: Article
    Keywords: Electronic spectroscopy; stimulated emission; cryogenic nitrogen matrices; tetrabenzoporphin
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 7772
    Identification Number: https://doi.org/10.1063/1.4746794
    Depositing User: Dr. John McCaffrey
    Date Deposited: 17 Jan 2017 14:38
    Journal or Publication Title: Low Temperature Physics
    Publisher: AIP Publishing
    Refereed: Yes
    URI:

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