Directly 2,12- and 2,8-linked Zn-II porphyrin oligomers were prepared from 2,12- and 2,8-diborylated Zn-II porphyrin by a cross platinum-induced coupling with a 2-borylated Zn-II porphyrin end unit followed by a triphenylphosphine (PPh3)-mediated reductive elimination. Comparative studies on the steady-state absorption and fluorescence spectra and the fluorescence lifetimes led to a conclusion that the exciton in the S-1 state is delocalized over approximately four and two Zn-II porphyrin units for 2,12- and 2,8-linked Zn-II porphyrin arrays, respectively.