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1978 (1)
1Author    Shozi Yamashita, Giiti TomitaRequires cookie*
 Title    The Delayed Fluorescence of Indole in Alcohol-Alkane Mixed Glasses at 77 K  
 Abstract    Using a phosphoroscope and a pulsed light-signal integrator, the effect of alcohol on the delayed fluorescence of indole was investigated in alcohol-isopentane mixed glasses at 77 K. The delayed fluorescence intensity was strongly depended on the alcohol concen-tration and the polarity of alcohol. Trapped electrons causing the delayed fluorescence were separated into two species utilizing the scavenge effect of CCI4; shallow trapped-electrons sensitive to CCI4 and deep trapped-electrons insensitive to CCI4. The former electrons seem to be responsible for the delayed fluorescence at low alcohol concentrations, whereas the latter for the delayed fluorescence at higher alcohol concentrations. The delayed fluorescence decayed exponentially at low alcohol concentrations, but it decayed with the Debye-Edwards law of t" 1 at higher alcohol concentrations. The recombination mechanism of trapped electrons with parent cations was discussed. The structure of shallow traps was also estimated. 
  Reference    Z. Naturforsch. 33b, 1136—1141 (1978); received March 29 1978 
  Published    1978 
  Keywords    Delayed Fluorescence, Indole, Trapped Electron, Trapping State 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1136.pdf 
 Identifier    ZNB-1978-33b-1136 
 Volume    33