Melo, João Sérgio Seixas de

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Melo, João Sérgio Seixas de
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Melo, J. Sérgio Seixas de
Melo, João Seixas de
Melo, João S. Seixas de
Seixas de Melo, J.
 
 
Unidade de I&D
 
Email
sseixas@ci.uc.pt
 
 
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Investigador UC

Publications
(All)

Results 1-72 of 72 (Search time: 0.001 seconds).

Issue DateTitleAuthor(s)TypeAccess
110-Mar-2009Alternating Binaphthyl−Thiophene Copolymers: Synthesis, Spectroscopy, and Photophysics and Their Relevance to the Question of Energy Migration versus Conformational RelaxationPina, J. ; Melo, J. Seixas de ; Burrows, H. D. ; Maçanita, A. L. ; Galbrecht, F. ; Bünnagel, T. ; Scherf, U. articleopenAccess
2Sep-2015Análise e caracterização de tintas de instrumentos de escrita por microespectrofotometria: construção de uma Base de Dados DissertaçãoInácio, Filipa Isabel Romano masterThesisopenAccess
325-Sep-2017Análise por HPLC-DAD e métodos quimiométricos das moléculas da cor de esferográficas azuisAlbuquerque, Mariana Cardoso de masterThesisopenAccess
4Sep-2012Antocianinas como fotoprotectores naturaisCosta, Damien Oliveira da masterThesisopenAccess
57-May-2009Association of a Hydrophobically Modified Polyelectrolyte and a Block Copolymer Followed by Fluorescence TechniquesCosta, Telma ; Schillén, Karin ; Miguel, Maria da G. ; Lindman, Björn ; Melo, J. Seixas de articleopenAccess
610-Oct-2012Caraterização de Estados Eletrónicos Excitados de Moléculas OrgânicasMelo, João Sérgio Seixas de otheropenAccess
717-Dec-2003Characterization of the Triplet State of Tris(8-hydroxyquinoline)aluminium(III) in Benzene SolutionBurrows, Hugh D. ; Fernandes, Mariana ; Melo, J. Seixas de ; Monkman, Andrew P. ; Navaratnam, Suppiah articleopenAccess
87-May-2009Complex Formation between a Fluorescently-Labeled Polyelectrolyte and a Triblock CopolymerCosta, Telma ; Melo, J. Seixas de ; Miguel, Maria da G. ; Lindman, Björn ; Schillén, Karin articleopenAccess
928-Nov-1996Comprehensive Evaluation of the Absorption, Photophysical, Energy Transfer, Structural, and Theoretical Properties of α-Oligothiophenes with One to Seven RingsBecker, Ralph S. ; Melo, J. Seixas de ; Maçanita, António L. ; Elisei, Fausto articleopenAccess
103-Aug-2000Comprehensive Investigation of the Photophysical Behavior of OligopolyfuransMelo, J. Seixas de ; Elisei, Fausto ; Gartner, Carlos ; Aloisi, Gian Gaetano ; Becker, Ralph S. articleopenAccess
112008A comprehensive study of the spectral and photophysical properties of arylthiophenesMelo, J. Seixas de ; Pina, J. ; Rodrigues, L. M. ; Becker, R. S. articleopenAccess
122008The effect of gamma-cyclodextrin addition in the self-assembly behavior of pyrene labeled poly(acrylic) acid with different chain sizesCosta, Telma ; Melo, J. S. Seixas de articleopenAccess
132004The effect of substitution and isomeric imperfection on the photophysical behaviour of p-phenylenevinylene trimersMelo, J. Seixas de ; Pina, J. ; Burrows, H. D. ; Brocke, S. ; Herzog, O. ; Thorn-Csányi, E. articleopenAccess
142006Electron Transfer in Supercritical Carbon Dioxide: Ultraexothermic Charge Recombination at the End of the ldquoInverted RegionrdquoSerpa, Carlos ; Gomes, Paulo J. S. ; Arnaut, Luis G. ; Formosinho, Sebastião J. ; Pina, João ; Melo, J. Seixas de articleopenAccess
152006Electronic spectral and photophysical properties of some p-phenylenevinylene oligomers in solution and thin filmsMelo, J. Seixas de ; Pina, J. ; Burrows, H. D. ; Di Paolo, R. E. ; Maçanita, A. L. articleopenAccess
1625-Dec-2003Energetics and Dynamics of Naphthalene Polyaminic Derivatives. Influence of Structural Design in the Balance Static vs Dynamic Excimer FormationMelo, J. Seixas de ; Pina, J. ; Pina, F. ; Lodeiro, C. ; Parola, A. J. ; Lima, J. C. ; Teresa Albelda, M. ; Paz Clares, M. ; Garcia-España, Enrique articleopenAccess
17Apr-2012Energy Transfer from Fluorene Based Conjugated Polyelectrolytes to Onchain and Self-Assembled Porphyrin UnitsMarques, Ana T. ; Pinto, Sara M. A. ; Monteiro, Carlos J. P. ; Melo, J. Sérgio Seixas de ; Burrows, Hugh D. ; Scherf, Ullrich ; Calvete, Mário J. F. ; Pereira, Mariette M. article; preprintopenAccess
18Sep-2010Estudos fotofísicos e de modelação molecular do poli(ácido acrílico) modificado com pirenoCastro, Catherine Suenne de masterThesisopenAccess
19Sep-2016Excited State Characterization of Oligoand Polythiophene Derivatives: Tetraphenylethene-Substituted Thiophenes, Aryl-Bithiophenes and Alternating Donor-Acceptor Indigo- Cyclopentadithiophene CopolymersAlnady, Mohamed Maged Saad Abdelati masterThesisopenAccess
2031-Jan-2008Excited State Properties of Oligophenyl and Oligothienyl Swivel CruciformsPina, J. ; Melo, J. Seixas de ; Burrows, H. D. ; Galbrecht, F. ; Bilge, A. ; Kudla, C. J. ; Scherf, U. articleopenAccess
215-Oct-2004Fluorescence Enhancement of the Water- Soluble Poly{1,4-phenylene-[9,9-bis- (4-phenoxybutylsulfonate)]fluorene-2,7-diyl} Copolymer in n-Dodecylpentaoxyethylene Glycol Ether MicellesBurrows, H. D. ; Lobo, V. M. M. ; Pina, J. ; Ramos, M. L. ; Melo, J. Seixas de ; Valente, A. J. M. ; Tapia, M. J. ; Pradhan, S. ; Scherf, U. articleopenAccess
222007Fluorescence studies on the interaction between pyrene-labelled poly(acrylic acid) and cyclodextrinsMelo, J. Sérgio Seixas de ; Costa, Telma ; Oliveira, Noémia ; Schillén, Karin articleopenAccess
2318-Sep-2017A Forensic (Chemical) Analysis of Portuguese Postage Stamps (1857-1909)Pinto, Catarina Monteiro masterThesisembargoedAccess
245-Nov-2014From molecular modelling to photophysics of neutral oligo- and polyfluorenes incorporated into phospholipid bilayersTapia, M. J. ; Monteserín, M. ; Burrows, H. D. ; Almeida, J. A. S. ; Pais, A. A. C. C. ; Pina, J. ; Seixas de Melo, J. S. ; Jarmelo, S. ; Estelrich, J. articleopenAccess
25Nov-2014From yellow to pink using a fluorimetric and colorimetric pyrene derivative and mercury (II) ionsPinheiro, Daniela ; Castro, Catherine S. de ; Melo, J. Sérgio Seixas de ; Oliveira, Elisabete ; Nuñez, Cristina ; Fernández-Lodeiro, Adrián ; Capelo, José Luis ; Lodeiro, Carlos articleopenAccess
262002Heavy-atom effects on metalloporphyrins and polyhalogenated porphyrinsAzenha, Emília G. ; Serra, Arménio C. ; Pineiro, Marta ; Pereira, Mariette M. ; Seixas de Melo, J. ; Arnaut, Luis G. ; Formosinho, Sebastião J. ; Rocha Gonsalves, A. M. d'A. articleopenAccess
272004Hole formation and transfer in poly[9,9-di(ethylhexyl)fluorene] and an amine end-capped derivative in solutionBurrows, H. D. ; Seixas de Melo, J. ; Forster, M. ; Güntner, R. ; Scherf, U. ; Monkman, A. P. ; Navaratnam, S. articleopenAccess
282007Identification of 7,4prime-Dihydroxy-5-methoxyflavylium in ldquoDragon's Bloodrdquo: To Be or Not To Be an AnthocyaninMelo, Maria J. ; Sousa, Micaela ; Parola, A. Jorge ; Melo, J. Sérgio Seixas de ; Catarino, Fernando ; Marçalo, Joaquim ; Pina, Fernando articleopenAccess
292017Insights into the Photophysics and Supramolecular Organization of Congo Red in Solution and the Solid StateCosta, Ana L. ; Gomes, Ana C. ; Pillinger, Martyn ; Gonçalves, Isabel S. ; Pina, João ; Seixas de Melo, J. Sérgio articleembargoedAccess
3020-Oct-2005Interaction between the Water Soluble Poly{1,4-phenylene-[9,9-bis(4-phenoxy butylsulfonate)]fluorene-2,7-diyl} Copolymer and Ionic Surfactants Followed by Spectroscopic and Conductivity MeasurementsTapia, M. J. ; Burrows, H. D. ; Valente, A. J. M. ; Pradhan, S. ; Scherf, U. ; Lobo, V. M. M. ; Pina, J. ; Melo, J. Seixas de articleopenAccess
312005Interactions between surfactants and {1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl}Burrows, H. D. ; Lobo, V. M. M. ; Pina, J. ; Ramos, M. L. ; Melo, J. Seixas de ; Valente, A. J. M. ; Tapia, M. J. ; Pradhan, S. ; Scherf, U. articleopenAccess
323-May-2007Interplay of Electrostatic and Hydrophobic Effects with Binding of Cationic Gemini Surfactants and a Conjugated Polyanion: Experimental and Molecular Modeling StudiesBurrows, Hugh D. ; Tapia, María J. ; Silva, Cláudia L. ; Pais, Alberto A. C. C. ; Fonseca, Sofia M. ; Pina, João ; Melo, J. Seixas de ; Wang, Yujie ; MarticleopenAccess
338-Nov-2001Intramolecular Charge Transfer of p-(Dimethylamino)benzethyne: A Case of Nonfluorescent ICT StateChattopadhyay, Nitin ; Serpa, Carlos ; Pereira, Mariette M. ; Melo, J. Seixas de ; Arnaut, Luis G. ; Formosinho, Sebastião J. articleopenAccess
342006Intramolecular excimer formation and sensing behavior of new fluorimetric probes and their interactions with metal cations and barbituric acidsLodeiro, C. ; Lima, J. C. ; Parola, A. J. ; Melo, J. S. Seixas de ; Capelo, J. L. ; Covelo, B. ; Tamayo, A. ; Pedras, B. articleopenAccess
3510-Jul-2003Intramolecular Excimer Formation in a Tripodal Polyamine Receptor Containing Three Naphthalene FluorophoresAlbelda, M. Teresa ; García-España, Enrique ; Gil, Laura ; Lima, João C. ; Lodeiro, Carlos ; Melo, J. Seixas de ; Melo, M. João ; Parola, A. Jorge ; PiarticleopenAccess
365-Sep-2002Long Range Electron Transfer Quenching in Polyamine Chains Bearing a Terminal Naphthalene UnitPina, Fernando ; Lima, J. C. ; Lodeiro, Carlos ; Melo, J. Seixas de ; Díaz, Pilar ; Teresa Albelda, M. ; García-España, Enrique articleopenAccess
37Sep-2014As Moléculas da Cor: Nas Máscaras da Viagem Filosófica (1783-1792) e Num Tecido Oriental (1880)Carapito, Susana Takato Oliveira Manaia masterThesisopenAccess
382005On the Low-Lying Excited States of sym-Triazine-Based HerbicidesOliva, Josep M. ; Azenha, M. Emilia D. G. ; Burrows, Hugh D. ; Coimbra, Rita ; Melo, J. Sérgio Seixas de ; L., Moisés Canle ; Fernández, M. Isabel ; Santaballa, J. Arturo ; Serrano-Andrés, Luis articleopenAccess
392004On the triplet state of poly(N-vinylcarbazole)Pina, J. ; Seixas de Melo, J. ; Burrows, H. D. ; Monkman, A. P. ; Navaratnam, S. articleopenAccess
4026-Aug-2004Photophysical and Spectroscopic Studies of Indigo Derivatives in Their Keto and Leuco FormsMelo, J. Seixas de ; Moura, A. P. ; Melo, M. J. articleopenAccess
41Jun-1994Photophysical Behavior of Coumarins as a Function of Substitution and Solvent: Experimental Evidence for the Existence of a Lowest Lying 1(n,.pi.*) StateMelo, J. Sérgio Seixas de ; Becker, Ralph S. ; Maçanita, António L. articleopenAccess
426-Mar-2006Photophysical Studies of α,ω-Dicyano-oligothiophenes NC(C4H2S)nCN (n = 1−6)Pina, J. ; Burrows, H. D. ; Becker, R. S. ; Dias, F. B. ; Maçanita, A. L. ; Melo, J. Seixas de articleopenAccess
4328-Dec-2006Photophysics of an Indigo Derivative (Keto and Leuco Structures) with Singular PropertiesMelo, J. Seixas de ; Rondão, R. ; Burrows, H. D. ; Melo, M. J. ; Navaratnam, S. ; Edge, R. ; Voss, G. articleopenAccess
442008Picosecond Structural Relaxation of Abietic Acid Based Amine End Capped Para-Phenylenevinylene Trimers in SolutionPaolo, Roberto E. Di ; Gigante, Barbara ; Esteves, Maria A. ; Pires, Natércia ; Santos, Célia ; Lameiro, Maria H. ; Melo, João Seixas de ; Burrows, Hugh D. ; Maçanita, António L. articleopenAccess
452017Platinum(II) Ring-Fused Chlorins as Near-Infrared Emitting Oxygen Sensors and Photodynamic AgentsPereira, Nelson A. M. ; Laranjo, Mafalda ; Casalta-Lopes, João ; Serra, Arménio C. ; Piñeiro, Marta ; Pina, João ; Seixas de Melo, J. Sérgio ; Senge, Mathias O. ; Botelho, M. Filomena ; Martelo, Liliana ; Burrows, Hugh D. ; Pinho e Melo, Teresa M. V. D. articleembargoedAccess
4610-Oct-2012Relatório da disciplina de fotoquímica: programa, conteúdos e métodosMelo, João Sérgio Seixas de otheropenAccess
472009A resonance Rayleigh scattering study of unlabeled and pyrene-labeled poly(acrylic acid) polymersCosta, Telma ; Seixas de Melo, J. articleopenAccess
483-Mar-2005Self-Assembly of a Hydrophobically Modified Naphthalene-Labeled Poly(acrylic acid) Polyelectrolyte in Water:Organic Solvent Mixtures Followed by Steady-State and Time-Resolved FluorescenceCosta, Telma ; Miguel, M. G. ; Lindman, Björn ; Schillén, Karin ; Lima, J. C. ; Melo, J. Seixas de articleopenAccess
492005Singlet and triplet energy transfer in a bichromophoric system with anthracene covalently linked through sulfonamide to a meso-tetraphenylporphyrinMelo, J. Seixas de ; Sobral, Abílio J. F. N. ; Gonsalves, A. M. d'A. Rocha ; Burrows, Hugh D. articleopenAccess
50Sep-2016Síntese e caracterização fotofísica de derivados sulfonados do tioindigoPereira, Ricardo Daniel da Costa masterThesisopenAccess
516-Sep-2007Spectral and Photophysical Characterization of Donor-π-Acceptor Arylthienyl- and Bithienyl-Benzothiazole Derivatives in Solution and Solid StatePina, João ; Melo, J. Sérgio Seixas de ; Burrows, Hugh D. ; Batista, Rosa M. F. ; Costa, Susana P. G. ; Raposo, M. Manuela M. articleopenAccess
5217-May-2007Spectral and Photophysical Studies of Poly[2,6-(1,5-dioctylnaphthalene)]thiophenesPina, J. ; Melo, J. Seixas de ; Burrows, H. D. ; Galbrecht, F. ; Nehls, B. S. ; Farrell, T. ; Scherf, U. articleopenAccess
532006Spectral and Photophysical Studies of Substituted Indigo Derivatives in Their Keto FormsMelo, J. Sérgio Seixas de ; Rondão, Raquel ; Burrows, Hugh D. ; Melo, Maria J. ; Navaratnam, Suppiah ; Edge, Ruth ; Voss, Gundula articleopenAccess
5410-Aug-2006Spectral and Photophysical Studies on Cruciform Oligothiophenes in Solution and the Solid StatePina, J. ; Melo, J. Seixas de ; Burrows, H. D. ; Bilge, A. ; Farrell, T. ; Forster, M. ; Scherf, U. articleopenAccess
55Sep-2014Spectroscopic and photophysical studies of a naphthalene-based emissive probe for metal cationsCastro, Catherine S. de ; Melo, J. Sérgio Seixas de ; Fernández-Lodeiro, Adrián ; Núñez, Cristina ; Lodeiro, Carlos articleopenAccess
56May-2001Spectroscopic characterization of α- and γ-pyrones and their substituted 4-hydroxy and 4-methoxy derivatives: an integrated infrared, photophysical and theoretical studyMelo, J. Seixas de ; Pina, G. Quinteiro, J. ; Breda, S. ; Fausto, R. articleopenAccess
5717-Oct-2005Spectroscopy and Coordination Chemistry of a New Bisnaphthalene−Bisphenanthroline Ligand Displaying a Sensing Ability for Metal CationsPina, João ; Melo, J. Seixas de ; Pina, Fernando ; Lodeiro, Carlos ; Lima, J. C. ; Parola, A. Jorge ; Soriano, Conxa ; Paz Clares, M. ; Albelda, M. TerarticleopenAccess
582001Spectroscopy and photophysics of 4- and 7-hydroxycoumarins and their thione analogsSeixas de Melo, J. ; Fernandes, P. F. articleopenAccess
592008A Study in Mauve: Unveiling Perkin's Dye in Historic SamplesSousa, Micaela M. ; Melo, Maria J. ; Parola, A. Jorge ; Morris, Peter J. T. ; Rzepa, Henry S. ; Melo, J. Sérgio Seixas de articleopenAccess
602002Switching from intramolecular energy transfer to intramolecular electron transfer by the action of pH and Zn2+ co-ordinationAlbelda, M. Teresa ; Díaz, Pilar ; García-España, Enrique ; Lima, João C. ; Lodeiro, Carlos ; Seixas de Melo, J. ; Jorge Parola, A. ; Pina, Fernando articleopenAccess
612007Synthesis and photophysical properties of dansyl-based polyamine ligands and their Zn(II) complexesParola, A. Jorge ; Lima, João Carlos ; Pina, Fernando ; Pina, João ; Melo, João Seixas de ; Soriano, Conxa ; García-España, Enrique ; Aucejo, Ricardo ; Alarcón, Javier articleopenAccess
626-Dec-2017Synthesis and photophysical studies of new host-guest hybrid organic-inorganic systemsCosta, Ana Luísa Silva da doctoralThesisembargoedAccess (6 months)
632-Feb-2016Synthesis, photophysical and molecular simulation investigations on fluorescent oligomers and polymersCastro, Catherine Suenne de doctoralThesisopenAccess
642008Synthesis, Structural and Photophysical Evaluations of Urea Based Fluorescent PET Sensors for AnionsSantos, Cidália M. G. Dos ; Glynn, Mark ; Mccabe, Tomas ; Melo, J. Sérgio Seixas de ; Burrows, Hugh D. ; Gunnlaugsson, Thorfinnur articleopenAccess
652006Temperature Dependence of Ultra-Exothermic Charge Recombinations13Serpa, Carlos ; Gomes, Paulo J. S. ; Arnaut, Luis G. ; Melo, J. Seixas de ; Formosinho, Sebastião J. articleopenAccess
66Oct-2013The first substituted macrocyclic ligand Py2N4S2 containing four naphthylmethylene pendant-armed groups: synthesis and photophysical propertiesGarcía, Verónica ; Aldrey, Anxela ; Castro, Catherine S. De ; Bastida, Rufina ; Macías, Alejandro ; Lodeiro, Carlos ; Melo, J. Sérgio Seixas de ; Núñez, Cristina articleopenAccess
672013The first substituted macrocyclic ligand Py2N4S2 containing four naphthylmethylene pendant-armed groups: Synthesis and photophysical propertiesGarcía, Verónica ; Aldrey, Anxela ; De Castro, Catherine S. ; Bastida, Rufina ; Macías, Alejandro ; Lodeiro, Carlos ; Seixas de Melo, J. Sérgio ; Núñez, Cristina articleopenAccess
682008Thiophene-phenylene/naphthalene-based step-ladder copolymersBünnagel, Torsten W. ; Nehls, Benjamin S. ; Galbrecht, Frank ; Schottler, Kristina ; Kudla, Christof J. ; Volk, Markus ; Pina, João ; Melo, João S. Seixas de ; Burrows, Hugh D. ; SCherf, Ullrich articleopenAccess
692002Triplet state dynamics on isolated conjugated polymer chainsBurrows, H. D. ; Seixas de Melo, J. ; Serpa, C. ; Arnaut, L. G. ; Miguel, M. da G. ; Monkman, A. P. ; Hamblett, I. ; Navaratnam, S. articleopenAccess
702007The Triplet State of Indigo13Melo, J. Sérgio Seixas de ; Burrows, Hugh D. ; Serpa, Carlos ; Arnaut, Luis G. articleopenAccess
7127-Apr-2006Triplet-State and Singlet Oxygen Formation in Fluorene-Based Alternating CopolymersFonseca, S. M. ; Pina, J. ; Arnaut, L. G. ; Melo, J. Seixas de ; Burrows, H. D. ; Chattopadhyay, N. ; Alcácer, L. ; Charas, A. ; Morgado, J. articleopenAccess
722008The use of microspectrofluorimetry for the characterization of lake pigmentsClaro, Ana ; Melo, Maria J. ; Schäfer, Stephan ; Melo, J. Sérgio Seixas de ; Pina, Fernando ; Berg, Klaas Jan van den ; Burnstock, Aviva articleopenAccess