Excited state Wavelength λ (nm) Excitation energies (eV) Oscillator strengths (f)
Experimental Theoretical MPP CPP MPP CPP
MPP CPP MPP CPP
S1 206 210 221 221 4.5537 5.5944 0.0262 0.0619
S2 236 250 237 263 5.2299 4.7216 0.0345 0.2143
S3 277 - 272 - 5.5904 - 0.0029 -
Table 15: Experimental and theoretical electronic absorption spectra values of MPP and CPP.