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Title: Photoacoustic Measurements of Porphyrin Triplet-State Quantum Yields and Singlet-Oxygen Efficiencies
Authors: Pineiro, Marta 
Carvalho, Ana L. 
Pereira, Mariette M. 
Gonsalves, A. M. d'A. Rocha 
Arnaut, Luís G. 
Formosinho, Sebastião J. 
Issue Date: 1998
Citation: Chemistry - A European Journal. 4:11 (1998) 2299-2307
Abstract: Photoacoustic calorimetry and luminescence techniques were used to measure singlet oxygen quantum yields (PhiDelta) of selected 5,10,15,20-tetrakis(aryl)porphyrins and of the novel chlorin shown. The use of validated photoacoustic references removes some inconsistencies existing in the literature. Excitation of halogenated porphyrins produces high yields of long-lived triplet states that efficiently transfer their energy to singlet oxygen. A route for red-absorbing, efficient singlet-oxygen photosensitisers is described.
DOI: 10.1002/(SICI)1521-3765(19981102)4:11<2299::AID-CHEM2299>3.0.CO;2-H
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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