Photophysical properties of Ce6, conjugate 1 and 2 in PBS.

Note: Δ and Δis the full width at half maximum of the Soret and Q(0,0) absorption band, respectively; and are the maxima of the Soret and Q(0,0) absorption bands, respectively; is the maximum of fluorescence band; LogP is the logarithm of partition coefficient; ΦF is the fluorescence quantum yield and ΦΔ is the singlet oxygen quantum yield, kblA is rate constant of initial absorption bleaching and pKa represents the inflection point of pH titration curve (basis for titration curve was Fmax/A (λexc)).