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Femtosecond transient absorption, Raman, and electrochemistry studies of tetrasulfonated copper phthalocyanine in
H Abramczyk1, B Brozek-Płuska, K Kurczewski
1Institute of Applied Radiation Chemistry, The Faculty of Chemistry, Technical University of Łódź, Wroblewskiego 15, 93-590 Łódź, Poland.
Abstract:
Ultrafast time-resolved electronic spectra of the primary events induced in the copper tetrasulfonated phthalocyanine Cu(tsPc)4-) in aqueous solution has been measured by femtosecond pump-probe transient absorption spectroscopy. The primary events initiated by the absorption of a photon occurring within the femtosecond time scale are discussed on the basis of the electron transfer mechanism between the adjacent phthalocyanine rings proposed recently in our laboratory. The femtosecond transient absorption results are compared with the low temperature emission spectra obtained with Raman spectroscopy and the voltammetric curves.
