Dynamics of Hydrogen Atom Transfer in Indole(NH3)n Clusters

V. Stert, L. Hesse, H. Lippert, C. P. Schulz, and W. Radloff*
Max-Born-Institut fr Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Str. 2A, D-12489 Berlin, Germany
J. Phys. Chem. A, 2002, 106 (20), pp 5051–5053
DOI: 10.1021/jp0156120
Publication Date (Web): April 30, 2002
Copyright © 2002 American Chemical Society
*

 To whom correspondence should be addressed. E-mail:  radloff@ mbi-berlin.de.

Abstract

The hydrogen atom transfer reaction in indole (NH3)n clusters excited at 263 nm to the S1(ππ*) state is studied in pump−probe experiments with femtosecond laser pulses. For small clusters the reaction is characterized by two successive processes on distinct time scales:  the time constant of the primary process is in the sub-ps region, whereas the secondary decay time growing with the cluster size reflects a relaxation process within 25 to 150 ps. A preliminary model of the H-transfer reaction is discussed.

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History

  • Published In Issue May 23, 2002
  • Received December 14, 2001
    Revised March 15, 2002

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