Synthesis, Transient Absorption, and Transient Resonance Raman Spectroscopy of Novel Electron Donor-Acceptor Complexes: [5,15-Bis[(4'-nitrophenyl)ethynyl]-10,20- diphenylporphinato]copper(II) and [5-[[4'-(Dimethylamino)phenyl]ethynyl]-15-[(4''-nitrophenyl)ethynyl]-10,20-diphenylporphinato]copper(II