Photophysical properties of corrphycenes

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 56; no. 11; pp. 2043 - 2048
• Main Authors: Mártire, Daniel O, Vaveliuk, Pablo, Bilmes, Gabriel M
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 01.10.2000
• Subjects: Corrphycenes; Fluorescence; Humans; Molecular Structure; Photochemistry; Photolysis; Photosensitizing Agents - chemical synthesis; Photosensitizing Agents - chemistry; Phototherapy; Porphyrins - chemical synthesis; Porphyrins - chemistry; Singlet oxygen; Spectrometry, Fluorescence; Triplet states; Zinc - chemistry; Fluorescence; Singlet oxygen; Corrphycenes; Triplet states
• ISSN: 1386-1425
• DOI: 10.1016/S1386-1425(99)00223-1

The photophysical properties of the Zn salt of octaethylcorrphycene (compound 1) and the doubly protonated octaethylcorrphycene (compound 2) were determined in benzene solutions. Fluorescence spectra and fluorescence quantum yields of ΦF ( 1)=0.03±0.02 and ΦF ( 2)=0.06±0.02 were measured. The triplet–triplet absorption spectra were obtained by means of flash-photolysis experiments. The triplet quantum yield values ΦT ( 1)=0.79±0.08 and ΦT ( 2)=0.82±0.08 were obtained by using laser-induced optoacoustic spectroscopy. The quantum yield of singlet molecular oxygen generation in air-saturated solutions, Φ Δ ( 1)=0.55±0.07 and Φ Δ ( 2)=0.38±0.05, were also measured using time resolved NIR luminescence.