Detection and structural characterization of clusters with ultrashort-lived electronically excited states: IR absorption detected by femtosecond multiphoton ionization.
The vibrational fingerprint of the electronically excited short-lived complex of 1-H-pyrrolo[3,2-h]quinoline:methanol was measured using femtosecond multiphoton ionization detected infrared (IR/fsMPI) spectroscopy under supersonic jet conditions. A cyclic doubly hydrogen-bonded structure of the cluster has been proven from the comparison of the measured vibrational spectrum with that calculated with density functional theory. The employed nsIR-fsUV double resonance scheme is shown to be an effective tool for structural analysis of precursors that undergo fast deactivation and/or photoreactions.
Nosenko
Yevgeniy
Y
Institute of Physical and Theoretical Chemistry, University of Frankfurt, Max-von-Laue-Str. 7, 60438 Frankfurt/M, Germany.
Kunitski
Maksim
M
Thummel
Randolph P
RP
Kyrychenko
Alexander
A
Herbich
Jerzy
J
Waluk
Jacek
J
Riehn
Christoph
C
Brutschy
Bernhard
B