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    Luminescence of Ion-Pair States of Halogens in Liquid Perfluorocarbons


    Alekseev, Vadim A. and van der Burgt, Peter J.M. and McCaffrey, John G. (2012) Luminescence of Ion-Pair States of Halogens in Liquid Perfluorocarbons. Journal of Physical Chemistry A, 116. pp. 1333-1336. ISSN 1089-5639

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    Abstract

    The I2(D′−A′) luminescence in liquid C7F16, C8F18, C9F20, and C12F26 has been observed following irradiation with visible (within the I2 X → B band region) and UV (λ < 300 nm) lasers. The band is shifted by ∼2000 cm−1 to the red relative to the gas phase and is significantly broader (fwhm ≈ 3000 cm−1 vs 500 cm−1 in the gas phase). Two-color excitation of other halogens in CnF2n+2 solvents revealed similarly shifted and strongly broadened D′−A′ bands of Br2, IBr, and BrCl. The stability of the ion-pair states of halogens in room temperature liquids opens new experimental opportunities for condensed phase studies and may be of applied interest considering the increasing industrial applications of perfluorocarbons.

    Item Type: Article
    Keywords: Luminescence; Ion-Pair States; Halogens; Liquid Perfluorocarbons;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 4950
    Identification Number: https://doi.org/10.1021/jp210973p
    Depositing User: Dr Peter van der Burgt
    Date Deposited: 13 May 2014 11:30
    Journal or Publication Title: Journal of Physical Chemistry A
    Publisher: American Chemical Society
    Refereed: Yes
    URI:

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