Coimbra Laser Lab

Selected Publications


 Dynamics of Radical Ion Pairs following Photoinduced Electron Transfer in Solvents with Low and Intermediate Polarities, Kamila K. Mentel , Rui M. D. Nunes , Carlos Serpa, Luis G. Arnaut, J. Phys. Chem. B, (2015) Article ASAP.Exploring Excited States of Pt(II) Diimine Catecholates for Photoinduced Charge Separation, P.A. Scattergood, P. Jesus, H. Adams, M. Delor, I.V. Sazanovich, H.D. Burrows, C. Serpa, J.A. Weinstein, J. Chem. Soc. Dalton Trans., (2015) Advance Article.
 Three Conformers of 2-Furoic Acid: Structure Changes Induced with Near-IR Laser Light, A. Halasa, L. Lapinski, I. Reva, H. Rostkowska, R. Fausto, M. J. Nowak, J. Phys. Chem. A, 119 (2015) 1037-1047.

Structure and Photochemistry of a Saccharyl Thiotetrazole, A. Ismael, A. Borba, M. S. C. Henriques, J. A. Paixao, R. Fausto, M. L. S. Cristiano, J. Org. Chem., 80 (2015) 392-400.

 Unveiling the Eigen-Weller Ion Pair from the Excited State Proton Transfer Kinetics of 3-Chloro-4- Methyl-7-Hydroxycoumarin J. S. Seixas de Melo and A. L. Maçanita J. Phys. Chem. B, 119 (2015) 2604–2610.

Unexpected photophysical properties of conjugated, alternating indigo-fluorene copolymers, J. Pina, J. Seixas de Melo, A. Eckert, U. Scherf, J. Mat. Chem. A, 3 (2015) 6373-6382.


 Photodynamic Therapy Efficacy Enhanced by Dynamics: The Role of Charge Transfer and Photostability in the Selection of Photosensitizers, L. G. Arnaut, M. M. Pereira, J. M. Dabrowski, E. F. F. Silva, F. A. Schaberle, A. R. Abreu,L. B. RochaM. M. Barsan, K. Urbanska, G. Stochel, C. M. A. Brett, Chem. Eur. J., 20 (2014) 5346-5357. 

Modulation of Biodistribution, Pharmacokinetics, and Photosensitivity with the Delivery Vehicle of a Bacteriochlorin Photosensitizer for Photodynamic Therapy, R. Saavedra, L. B. Rocha, J. M. Dabrowski, L. G. Arnaut, ChemMedChem, 9 (2014) 390-398.

Near-infrared and ultraviolet induced isomerization of crotonic acid in N-2 and Xe cryomatrices: First observation of two high-energy trans C-O conformers and mechanistic insights, N. Kus, R. Fausto, J. Chem. Phys., 141 (2014) 234310.

Near-Infrared Laser-Induced Generation of Three Rare Conformers of Glycolic Acid

A. Halasa, L. Lapinski, I. Reva, H. Rostkowska, R. Fausto, M. J. Nowak, J. Phys. Chem. A, 118 (2014) 5626-5635.

 The effect of polyaromatic hydrocarbons on the spectral and photophysical properties of diaryl-pyrrole derivatives: an experimental and theoretical study, João Pina, Daniela Pinheiro, Bruno Nascimento, Marta Piñeiro and J. Sérgio Seixas de Melo PCCP , 16 (2014) 18319-18326. Self-Assembly of Poly {1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl} with Oppositely Charged Phenylenevinylene Oligoelectrolytes, Telma Costa, Ana T. Marques, J. Sergio Seixas de Melo, Alexander W. Thomas, Logan E. Garner, Ullrich Scherf, Guillermo C. Bazan, Hugh D. Burrows,  J. Phys. Chem. B, 118 (2014) 613–623. 


Stratum corneum permeabilization with photoacoustic waves generated by piezophotonic materials, G. F. F. Sa, C. Serpa, L. G. Arnaut, J. Control. Release, 167 (2013) 290-300.   From elementary reactions to chemical relevance in the photodynamic therapy of cancer, L. G. Arnaut, S. J. Formosinho, Pure Appl. Chem., 85 (2013) 1389-1403.

Influence of Cage Confinement on the Photochemistry of Matrix-Isolated E-beta-Ionone: FT-IR and DFT Study, A. Kaczor, A I. Reva, R. Fausto, J. Phys. Chem. A, 117 (2013) 888-897.  Near-IR laser generation of a high-energy conformer of L-alanine and the mechanism of its decay in a low-temperature nitrogen matrix, C. M. Nunes, L. Lapinski, R. Fausto, I. Reva, J. Chem. Phys., 138(2013) 125101.

 Chain Length Dependent Excited-State Decay Processes of Diluted PF2/6 Solutions, João Pina, J. Sérgio Seixas de Melo, Niels Koenen and Ulli Scherf J. Phys. Chem. B, 117 (2013), 7370-7380. Donor-Acceptor-Donor Thienyl/Bithienyl-Benzothiadiazole/Quinoxaline Model Oligomers: Experimental and Theoretical studies, João Pina, J. Seixas de Melo, D. Breusov, Ullrich Scherf Phys. Chem. Chem. Phys., 15 (2013) 15204 -15213. 


Combined Effects between Singlet Oxygen and Hydroxyl Radical in Photodynamic Therapy with Photostable Bacteriochlorins: Evidence from Intracellular Fluorescence and Increased Photodynamic Efficacy In Vitro. J.M. Dabrowski, L.G. Arnaut, M.M. Pereira, K. Urbanska, S. Simões, G. Stochel, L. Cortes, Free Radic Biol. Med., 52 (2012) 1188-1200.On the singlet states of porphyrins, chlorins and bacteriochlorins and their ability to harvest red/infrared light. C. P. Monteiro, J. Pina, M.M. Pereira, L.G. Arnaut, Photochem. Photobiol. Sci., 11 (2012) 1233-1238.

UV-Laser Photochemistry of Isoxazole Isolated in a Low-Temperature Matrix. C.M. Nunes, I. Reva, T.M.V.D. Pinho e Melo, R. Fausto, J. Org.Chem., 77 (2012) 8723.Using Heavy Atom Rare Gas Matrix to Control the Reactivity of 4-Methoxybenzaldehyde - A Comparison with Benzaldehyde. N. Kuş, A. Sharma, I. Reva, L. Lapinski, R. Fausto, J. Chem. Phys., 136 (2012) 144509.

Excited-State Dynamics and Self-Organization of Poly(3-Hexylthiophene) (P3HT) in Solution and Thin Films.  B. Ferreira, P.F. Silva, J. Sérgio Seixas de Melo, J. Pina, A. Maçanita, J. Phys. Chem. B, 116 (2012) 2347–2355.Excited State Isomerization of Leuco Indigo. R. Rondão, J. Sérgio Seixas de Melo, M.J. Melo, A.J. Parola, J. Phys. Chem. A, 116 (2012) 2826–2832.


Design of Porphyrin-Based Photosensitizers for Photodynamic Therapy. L.G. Arnaut, Adv. Inorg. Chem., 63 (2011) 187-234.Biodistribution and Photodynamic Efficacy of a Water-Soluble, Stable, Halogenated Bacteriochlorin against Melanoma. J.M. Dabrowski, K. Urbanska, L.G. Arnaut, M.M. Pereira, A.R. Abreu, S. Simões, G. Stochel,ChemMedChem, 6 (2011) 465-475.

Pyrolysis of Isoxazole Revisited: A New Primary Product and the Pivotal Role of the Vinylnitrene. A Low-Temperature Matrix Isolation and Computational Study. C.M. Nunes, I. Reva, T.M.V. Pinho e Melo, R. Fausto, T. Bally, J. Am. Chem. Soc., 133 (2011) 18911.Conformation-Changing Aggregation in Hydroxyacetone: A Combined Low Temperature FTIR, Jet and Crystal Study. A. Sharma, I. Reva, R. Fausto, S. Hesse, M.A. Suhm, S.K. Nayak, R. Sathiskumar, R. Pal, T.N.G. Row, J. Am. Chem. Soc., 133 (2011) 20194.

Preventing the formation of the long-lived coloured transoid-trans photoisomer in photochromic benzopyrans. C.M. Sousa, J. Pina, J. Seixas de Melo, J. Berthet, S. Delbaere, P.J. Coelho, Org. Lett.,13 (2011) 4040-4043.Characterization of the Singlet and Triplet Excited States of 3-Chloro-4-Methylumbelliferone. J. Sergio Seixas de Melo, C. Cabral, J.C. Lima, A.L. Maçanita, J. Phys. Chem. A, 115 (2011) 8392-8398.


Mechanisms of singlet-oxygen and superoxide-ion generation by porphyrins and bacteriochlorins and their implications in photodynamic therapy. E. F. F. Silva, C. Serpa, J.M. Dabrowski, C.J.P. Monteiro, S.J. Formosinho, G. Stochel, K. Urbaska, S. Simões, M.M. Pereira, L.G. Arnaut, Chem. Eur. J.,16 (2010) 9273-9286.Analytical Solution for Time-resolved Photoacoustic Calorimetry Data and Applications to Two Typical Photoreactions. F. A. Schaberle, R.M.D. Nunes, M. Barroso, C. Serpa, L.G. Arnaut, Photochem. Photobiol. Sci., 9(2010) 812-822.

Chirality Influence on the Aggregation of Methyl Mandelate. M. Albrecht, A. Borba, K. Le Barbu-Debus, R. Fausto, S. Grimme, A. Mahjoub, U. Schmitt, L. Schrader, M.A. Suhm, A. Zehnacker-Rentien, J. Zischang,New. Eur. J., 34 (2010) 1266.Dehydroindigo, the forgotten indigo and its contribution to the Color of Maya Blue. R. Rondão, J. Seixas de Melo, V. Bonifácio, M.J. Melo, J. Phys. Chem. A., 114 (2010) 1699–1708.

Synthesis and Characterization of the Ground and Excited States of Tripodal-Like Oligothienyl-Imidazoles. J. Pina, J. Seixas de Melo, R. Batista, S. Costa, M.M. Raposo, J. Phys. Chem. B., 114 (2010) 4964–4972.NIR-laser-induced selective rotamerization of hydroxy conformers of cytosine. L. Lapinski, M.J. Nowak, I. Reva, H. Rostkowska, R. Fausto,Phys. Chem. Chem. Phys., 12 (2010) 9615–9618.


Photoacid for extremely long-lived and reversible pH-jumps. R.M.D. Nunes, M. Pineiro, L.G. Arnaut, J. Am. Chem. Soc., 131 (2009) 9456-9462.The role of reaction energy and hydrogen bonding in the reaction path of enzymatic proton transfers. M. Barroso, L.G. Arnaut, S.J. Formosinho,J. Phys. Org. Chem, 22 (2009) 254-263.

Molecular Structure, Infrared Spectra and Photochemistry of Isoniazid under Cryogenic Conditions. A. Borba, A. Gómez-Zavaglia, R. Fausto, J. Phys. Chem. A, 113 (2009) 9220.Conformational Switching Induced by Narrowband Near-Infrared Irradiation. A. Sharma, I. Reva, R. Fausto, J. Am. Chem. Soc., 131 (2009) 8752.

Alternating Binaphthyl-Thiophene Copolymers: Synthesis, Spectroscopy and Photophysics and their Relevance to the Question of Energy Migration versus Conformational Relaxation. J. Pina, J. Seixas de Melo, H. Burrows, A.L. Maçanita, F. Galbrecht, T. Bünnagel, U. Scherf, Macromolecules 42 (2009) 1710–1719.A Comprehensive Investigation of the Electronic Spectral and Photophysical properties of Conjugated Naphthalene-Thiophene Oligomers. J. Pina, J. Sérgio Seixas de Melo, Phys. Chem. Chem. Phys.11 (2009) 8706-8713.


Photoacoustic Measurement of Electron Injection Efficiencies and Energies from Excited Sensitizer Dyes into Nanocrystalline TiO2 Films. C. Serpa, J. Schabauer, A.P. Piedade, C.J.P. Monteiro, M.M. Pereira, P. Douglas, H.D. Burrows, L.G. Arnaut, J. Am. Chem. Soc., 130 (2008) 8876-8877.Understanding Chemical Reactivity. The Case for Atom, Proton and Methyl Transfers. L.G. Arnaut, S.J. Formosinho, Chem. Eur. J., 14 (2008) 6578-6587.

Dimer Formation in Nicotinamide and Picolinamide in the Gas and Condensed Phases Probed by Infrared Spectroscopy. A. Borba, M. Albrecht, A. Gómez-Zavaglia, L. Lapinski, M. Nowak, M. Suhm, R. Fausto, Phys. Chem. Chem. Phys., 10 (2008) 7010-7021.Structure of Isolated 1,4-Butanediol: Combination of MP2 Calculations, NBO Analysis and Matrix‑Isolation Infrared Spectroscopy. A.J. Lopes Jesus, M.T.S. Rosado, I. Reva, R. Fausto, M.E.S. Eusébio, J.S. Redinha,J. Phys. Chem. A, 112 (2008) 4669-4678.

Preparation and photophysical characterisation of Zn-Al layered double hydroxides intercalated by anionic pyrene derivatives. S. Gago, T. Costa, J. Seixas de Melo, I.S. Gonçalves, M. Pillinger, J. Mat. Chem., 18 (2008) 894-904.A study in Mauve. Unveiling Perkin's Dye in Historic Samples. M.M. Sousa, M.J. Melo, A.J. Parola, P.J.T. Morris, H.S. Rzepa, J. Sérgio Seixas de Melo Chem. Eur. J. 14 (2008) 8507– 8513.