M
Marta Pineiro
Researcher at University of Coimbra
Publications - 99
Citations - 1801
Marta Pineiro is an academic researcher from University of Coimbra. The author has contributed to research in topics: Porphyrin & Singlet oxygen. The author has an hindex of 18, co-authored 94 publications receiving 1430 citations. Previous affiliations of Marta Pineiro include Catholic University of Portugal.
Papers
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Journal ArticleDOI
Photoacoustic Measurements of Porphyrin Triplet-State Quantum Yields and Singlet-Oxygen Efficiencies
Marta Pineiro,Ana Luísa Carvalho,Mariette M. Pereira,A. M. d'A. Rocha Gonsalves,Luis G. Arnaut,Sebastião J. Formosinho +5 more
TL;DR: In this paper, photoacoustic calorimetry was used to measure the quantum yields of singlet molecular oxygen production by the triplet states of tetraphenylporphyrin (TPP), ZnTPP and CuTPP in toluene, yielding values of 0.67 0.14, 0.68 0.19 and 0.03 0.07 quantum yield.
Journal ArticleDOI
Heavy-atom effects on metalloporphyrins and polyhalogenated porphyrins
Emı́lia G. Azenha,Arménio C. Serra,Marta Pineiro,Mariette M. Pereira,J. Sérgio Seixas de Melo,Luis G. Arnaut,Sebastião J. Formosinho,A. M. d'A. Rocha Gonsalves +7 more
TL;DR: In this article, the photophysics of halogenated and metallated tetrakisphenylporphyrins were investigated using single-photon counting, photoacoustic calorimetry and luminescence techniques.
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Singlet oxygen quantum yields from halogenated chlorins: potential new photodynamic therapy agents
Marta Pineiro,Mariette M. Pereira,A. M. d'A. Rocha Gonsalves,Luis G. Arnaut,Sebastião J. Formosinho +4 more
TL;DR: In this article, flash photolysis and photoacoustic calorimetry were used to measure the energy transfer rates and singlet oxygen quantum yields originated by the triplet states of halogenated tetrakisphenylporphyrins and related chlorins in aerated toluene.
Journal ArticleDOI
Microwave‐Assisted 1,3‐Dipolar Cycloaddition: an Eco‐Friendly Approach to Five‐Membered Heterocycles
TL;DR: In this paper, the authors describe the use of microwave technology to carry out 1,3-dipolar cycloaddition reactions, an important tool for the construction of five-membered heterocycles.
Journal ArticleDOI
New Halogenated Phenylbacteriochlorins and Their Efficiency in Singlet-Oxygen Sensitization‡
Marta Pineiro,A. M. d'A. Rocha Gonçalves,Mariette M. Pereira,Sebastião J. Formosinho,Luis G. Arnaut +4 more
TL;DR: In this article, Halogenated phenylbacteriochlorins are synthesized with high yields in a two-step procedure, and time-resolved photoacoustic measurements, with nanosecond and nanocalorie resolution, show that these bacterio-chlorins sensitize the formation of singlet oxygen with nearly unity quantum yield.