TY - JOUR
T1 - Time-resolved dynamics in acetonitrile cluster anions (CH3 CN)n-
AU - Young, Ryan M.
AU - Griffin, Graham B.
AU - Kammrath, Aster
AU - Ehrler, Oli T.
AU - Neumark, Daniel M.
PY - 2010/1/18
Y1 - 2010/1/18
N2 - Excited state dynamics of acetonitrile cluster anions, (CH3 CN)n-, were investigated using time-resolved photoelectron imaging (TRPEI) for 20 ≤ n ≤ 50. The clusters were excited and then photodetached with femtosecond pump and probe pulses at 790 and 395 nm, respectively. Excited state lifetimes varied between 200 and 270 fs over this size range, showing no obvious size trend. Experimental evidence indicates that we are exciting 'isomer II' clusters in which the excess electron is valence-bound to a solvated anionic dimer core. The absence of an obvious size-dependence in the excited state lifetimes is consistent with such a structure.
AB - Excited state dynamics of acetonitrile cluster anions, (CH3 CN)n-, were investigated using time-resolved photoelectron imaging (TRPEI) for 20 ≤ n ≤ 50. The clusters were excited and then photodetached with femtosecond pump and probe pulses at 790 and 395 nm, respectively. Excited state lifetimes varied between 200 and 270 fs over this size range, showing no obvious size trend. Experimental evidence indicates that we are exciting 'isomer II' clusters in which the excess electron is valence-bound to a solvated anionic dimer core. The absence of an obvious size-dependence in the excited state lifetimes is consistent with such a structure.
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U2 - 10.1016/j.cplett.2009.12.058
DO - 10.1016/j.cplett.2009.12.058
M3 - Article
AN - SCOPUS:73149099688
SN - 0009-2614
VL - 485
SP - 59
EP - 63
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 1-3
ER -