Browsing by Author "Spencer, Philip C."

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Viscosity Dependence of Diffusion-controlled Triplet Energy Transfer in 2-Methylpentan 2-,4-diol
    (Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1977, 73 (2), 1977) Dainton, Frederick S.; Henry, Marian S.; Pilling, Michael J.; Spencer, Philip C.
    The rate constant for triplet energy transfer from phenanthrene to stilbene has been studied in 2-methylpentan 2-,4-diol over the temperature range 190–350 K. It shows a non-Arrhenius dependence which can be described by the VTF equation k=AT exp {–B/(T–T0)}, where B=(850 ± 100) K and T0= 158 K. The B-value is smaller than that derived from viscosity data. Similar results are obtained from less extensive investigations of naphthalene + chromium acetyl-acetonate and anthracene + perylene. The data for phenanthrene + stilbene, which cover nine decades in rate constant, are inadequately described by the empirical equation (kη/T)=a+bηx, where a, b and x are constants.