Fig.4a Concentration dependence of absorption of TPPS4 absorbance in aqueous solution at pH=7.5: a) concentration range 10-6-10-2M (normalized at the Qy(1,0) band) and 10-6-10-3M (normalized at the maximum of the Soret band)

Fig.4b Bugger's law experiment measured at 515nm, absorbance is normalized to 10mm optical path length.