Y. Moriya et al., MEASUREMENT OF EXTERNAL REFLECTION SPECTRA OF PROTONATED TETRAPHENYLPORPHYRIN ADSORBED AT LIQUID-LIQUID INTERFACE, Chemistry Letters, (3), 1998, pp. 221-222
External reflection UV-vis spectra of the interfacially adsorbed speci
es of protonated tetraphenylporphyrin at toluene/aqueous sulfuric acid
intel face were successfully observed with clear negative absorption
bands and without overlapping by the spectrum of the organic phase.