Intramolecular Electron Transfer from Axial Ligand to S2-Excited Sb-Tetraphenylporphyrin
journal contributionposted on 18.05.2006, 00:00 authored by Mamoru Fujitsuka, Dae Won Cho, Tsutomu Shiragami, Masahide Yasuda, Tetsuro Majima
The S2 state properties of Sb-tetraphenylporphyrin (SbTPP) derivatives were investigated using subpicosecond spectroscopic methods. The S2 fluorescence of various SbTPP derivatives was observed for the first time. It was revealed that the S2 fluorescence lifetime changed depending on the donor-ability of the ligand because of the contribution of the charge separation to the S2 excited SbTPP, which was confirmed by transient absorption spectroscopy.