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    Amplified emission of phthalocyanine isolated in cryogenic matrices


    Dozova, Nadia and Murray, Ciaran and McCaffrey, John G. and Shafizadeh, Niloufar and Crepin, Claudine (2008) Amplified emission of phthalocyanine isolated in cryogenic matrices. Physical Chemistry Chemical Physics, 10 (16). pp. 2167-2174. ISSN 1463-9076

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    Abstract

    Laser induced fluorescence spectroscopy of free-base (H(2)Pc) and zinc (ZnPc) phthalocyanines trapped in rare gas and nitrogen matrices reveals a quite unexpected phenomenon with a moderate increase in the laser intensity. In all matrices except Xe, a huge increase occurs in the intensity of an emission band near 755 nm when pumping the S(1) <-- S(0) transition. The band involves a vibrational mode of the ground state, located at 1550 and 1525 cm(-1) for H(2)Pc and ZnPc, respectively. Many of the characteristics of amplified emission (AE) are exhibited by this vibronic transition. Excitation scans recorded for the AE band yield greatly enhanced site selectivity compared to what is obtained in normal fluorescence excitation scans.

    Item Type: Article
    Keywords: Amplified emission; phthalocyanine; cryogenic matrices;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 7832
    Identification Number: https://doi.org/10.1039/B718418B
    Depositing User: Dr. John McCaffrey
    Date Deposited: 01 Feb 2017 10:10
    Journal or Publication Title: Physical Chemistry Chemical Physics
    Publisher: Royal Society of Chemistry
    Refereed: Yes
    URI:

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