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1

Identification of red colorants in van Gogh paintings and ancient Andean textiles by microspectrofluorimetry

Ana Claro, Maria J. Melo, J.Sérgio Seixas de Melo, Klaas Jan van den Berg, Aviva Burnstock, Meredith Montague, Richard Newman

Journal:

Journal of Cultural Heritage

Year:

2010

Language:

english

File:

PDF, 708 KB

english, 2010

2

Effectiveness of gamification in the engagement of students

da Rocha Seixas, Luma, Gomes, Alex Sandro, de Melo Filho, Ivanildo José

Journal:

Computers in Human Behavior

Year:

2016

Language:

english

File:

PDF, 1.05 MB

english, 2016

3

Controlling the Fluorescence Behavior of 1-Pyrenesulfonate by Cointercalation with a Surfactant in a Layered Double Hydroxide

Costa, Ana L., Gomes, Ana C., Pillinger, Martyn, Gonçalves, Isabel S., Seixas de Melo, J. Sérgio

Journal:

Year:

2015

Language:

english

File:

PDF, 2.74 MB

english, 2015

4

A Study in Mauve: Unveiling Perkin's Dye in Historic Samples

Micaela M. Sousa, Maria J. Melo, A. Jorge Parola, Peter J. T. Morris, Henry S. Rzepa, J. Sérgio Seixas de Melo

Journal:

Chemistry - A European Journal

Year:

2008

Language:

english

File:

PDF, 442 KB

english, 2008

5

Synthesis, Structural and Photophysical Evaluations of Urea Based Fluorescent PET Sensors for Anions

Dos Santos, Cidalia M. G., Glynn, Mark, Mccabe, Tomas, Seixas de Melo, J. Sergio, Burrows, Hugh, Gunnlaugsson, Thorfinnur

Journal:

Supramolecular Chemistry

Year:

2007

Language:

english

File:

PDF, 824 KB

english, 2007

6

A photochemical study on the blue dye indigo: from solution to ancient Andean textiles

Sousa, Micaela M., Miguel, Catarina, Rodrigues, Isa, Parola, A. Jorge, Pina, Fernando, Seixas de Melo, J. Sérgio, Melo, Maria J.

Journal:

Photochemical & Photobiological Sciences

Year:

2008

Language:

english

File:

PDF, 170 KB

english, 2008

7

Partition of Pesticides of the Coumarin Family between Water and Amphiphilic Aggregates

Lopes, Antonio., de Melo, J. Seixas., Martins, Armando J., Macanita, Antonio L., Pina, Fernando S., Wamhoff, Heinrich., Melo, Eurico.

Journal:

Environmental Science & Technology

Year:

1995

Language:

english

File:

PDF, 926 KB

english, 1995

8

Interaction 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 Measurements

Tapia, M. J., Burrows, H. D., Valente, A. J. M., Pradhan, S., Scherf, U., Lobo, V. M. M., Pina, J., Seixas de Melo, J.

Journal:

Journal of Physical Chemistry B

Year:

2005

Language:

english

File:

PDF, 131 KB

english, 2005

9

A novel biopolymeric photoinitiator based on chitosan and thioxanthone derivative: Synthesis, characterization and efficiency in photopolymerization

Valandro, Silvano R., Poli, Alessandra L., Venâncio, Tiago, Pina, João, de Melo, J. Seixas, Burrows, Hugh D., Schmitt, Carla C.

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

2016

Language:

english

File:

PDF, 1.10 MB

english, 2016

10

Insights into the Photophysics and Supramolecular Organization of Congo Red in Solution and the Solid State

Costa, Ana L., Gomes, Ana C., Pillinger, Martyn, Gonçalves, Isabel S., Pina, João, Seixas de Melo, J. Sérgio

Journal:

Year:

2017

Language:

english

File:

PDF, 3.27 MB

english, 2017

11

A novel, non-invasive, multi-purpose and comprehensive method to date inks in real handwritten documents based on the monitoring of the dye ageing processes

Ortiz-Herrero, L., de Almeida Assis, A.C., BartolomÃ©, L., Alonso, M.L., Maguregui, M.I., Alonso, R.M., Seixas de Melo, J.S.

Journal:

Chemometrics and Intelligent Laboratory Systems

Year:

2020

File:

PDF, 1.34 MB

2020

12

Singlet Excitation Energy Harvesting and Triplet Emission in the Self-Assembled System Poly{1,4-phenylene-[9,9-bis (4-phenoxy-butylsulfonate)]fluorene-2,7-diyl} copolymer/tris(bipyridyl)ruthenium(II)in Aqueous Solution

Hugh D. Burrows, Sofia M. Fonseca, Fernando B. Dias, J. Seixas de Melo, Andrew P. Monkman, Ullrich Scherf, Swapna Pradhan

Journal:

Advanced Materials

Year:

2009

Language:

english

File:

PDF, 213 KB

english, 2009

13

The Triplet State of Indigo

J. Sérgio Seixas de Melo, Hugh D. Burrows, Carlos Serpa, Luis G. Arnaut

Journal:

Angewandte Chemie

Year:

2007

Language:

english

File:

PDF, 99 KB

english, 2007

14

The Triplet State of Indigo

J. Sérgio Seixas de Melo, Hugh D. Burrows, Carlos Serpa, Luis G. Arnaut

Journal:

Angewandte Chemie International Edition

Year:

2007

Language:

english

File:

PDF, 100 KB

english, 2007

15

Electron Transfer in Supercritical Carbon Dioxide: Ultraexothermic Charge Recombination at the End of the “Inverted Region”

Carlos Serpa, Paulo J. S. Gomes, Luis G. Arnaut, Sebastião J. Formosinho, João Pina, J. Seixas de Melo

Journal:

Chemistry - A European Journal

Year:

2006

Language:

english

File:

PDF, 333 KB

english, 2006

16

Identification of 7,4′-Dihydroxy-5-methoxyflavylium in “Dragon's Blood”: To Be or Not To Be an Anthocyanin

Maria J. Melo, Micaela Sousa, A. Jorge Parola, J. Sérgio Seixas de Melo, Fernando Catarino, Joaquim Marçalo, Fernando Pina

Journal:

Chemistry - A European Journal

Year:

2007

Language:

english

File:

PDF, 231 KB

english, 2007

17

Synthesis, Spectroscopy, Nonlinear Optics, and Theoretical Investigations of Thienylethynyl Octopoles with a Tunable Core

María Moreno Oliva, Juan Casado, Juan T. López Navarrete, Gunther Hennrich, Stijn van Cleuvenbergen, Inge Asselberghs, Koen Clays, M. Carmen Ruiz Delgado, Jean-Luc Brédas, J. Sérgio Seixas de Melo, Lu

Journal:

Chemistry - A European Journal

Year:

2009

Language:

english

File:

PDF, 492 KB

english, 2009

18

ChemInform Abstract: A Novel Fluorescent Chemosensor Exhibiting Exciplex Emission. An Example of an Elementary Molecular Machine Driven by pH and by Light.

Andrea Bencini, Antonio Bianchi, Carlos Lodeiro, Andrea Masotti, Jorge Parola, Fernando Pina, J. Seixas de Melo, Barbara Valtancoli

Journal:

Year:

2000

File:

PDF, 29 KB

2000

19

On the Low-Lying Excited States of sym-Triazine-Based Herbicides

Josep M. Oliva, M. Emilia D. G. Azenha, Hugh D. Burrows, Rita Coimbra, J. Serxio Seixas de Melo, Moisés Canle L., M. Isabel Fernández, J. Arturo Santaballa, Luis Serrano-Andrés

Journal:

Year:

2005

Language:

english

File:

PDF, 165 KB

english, 2005

20

Spectral and Photophysical Studies of Substituted Indigo Derivatives in Their Keto Forms

J. Sérgio Seixas de Melo, Raquel Rondão, Hugh D. Burrows, Maria J. Melo, Suppiah Navaratnam, Ruth Edge, Gundula Voss

Journal:

Year:

2006

Language:

english

File:

PDF, 189 KB

english, 2006

21

Temperature Dependence of Ultra-Exothermic Charge Recombinations

Carlos Serpa, Paulo J. S. Gomes, Luis G. Arnaut, J. Seixas de Melo, Sebastião J. Formosinho

Journal:

Year:

2006

Language:

english

File:

PDF, 153 KB

english, 2006

22

Conformational Relaxation of p-Phenylenevinylene Trimers in Solution Studied by Picosecond Time-Resolved Fluorescence

Roberto E. Di Paolo, João Seixas de Melo, João Pina, Hugh D. Burrows, Jorge Morgado, António L. Maçanita

Journal:

Year:

2007

Language:

english

File:

PDF, 384 KB

english, 2007

23

Picosecond Structural Relaxation of Abietic Acid Based Amine End Capped Para-Phenylenevinylene Trimers in Solution

Roberto E. Di Paolo, Barbara Gigante, Maria A. Esteves, Natércia Pires, Célia Santos, Maria H. Lameiro, João Seixas de Melo, Hugh D. Burrows, António L. Maçanita

Journal:

Year:

2008

Language:

english

File:

PDF, 379 KB

english, 2008

24

Characterization of the Excited States of Indigo Derivatives in their Reduced Forms

Raquel Rondão, J. Sérgio Seixas de Melo, Gundula Voss

Journal:

Year:

2010

Language:

english

File:

PDF, 326 KB

english, 2010

25

A New ZnII Tweezer Pyridine-Naphthalene System – An Off-On-Off System Working in a Biological pH Window

Ricardo Aucejo, Javier Alarcón, Enrique García-España, José M. Llinares, Katherine L. Marchin, Conxa Soriano, Carlos Lodeiro, M. Alexandra Bernardo, Fernando Pina, João Pina, J. Seixas de Melo

Journal:

European Journal of Inorganic Chemistry

Year:

2005

Language:

english

File:

PDF, 168 KB

english, 2005

26

Three interconverting excited species: experimental study and solution of the general photokinetic triangle by time-resolved fluorescence

J. Seixas de Melo, A.L. Maçanita

Journal:

Chemical Physics Letters

Year:

1993

Language:

english

File:

PDF, 511 KB

english, 1993

27

Electronic spectral and photophysical properties of some p-phenylenevinylene oligomers in solution and thin films

J. Seixas de Melo, J. Pina, H.D. Burrows, R.E. Di Paolo, A.L. Maçanita

Journal:

Chemical Physics

Year:

2006

Language:

english

File:

PDF, 393 KB

english, 2006

28

Flavylium chromophores as species markers for dragon's blood resins from Dracaena and Daemonorops trees

Micaela M. Sousa, Maria J. Melo, A. Jorge Parola, J. Sérgio Seixas de Melo, Fernando Catarino, Fernando Pina, Frances E.M. Cook, Monique S.J. Simmonds, João A. Lopes

Journal:

Journal of Chromatography A

Year:

2008

Language:

english

File:

PDF, 525 KB

english, 2008

29

Synthesis and photophysical properties of dansyl-based polyamine ligands and their Zn(II) complexes

A. Jorge Parola, João Carlos Lima, Fernando Pina, João Pina, João Seixas de Melo, Conxa Soriano, Enrique García-España, Ricardo Aucejo, Javier Alarcón

Journal:

Inorganica Chimica Acta

Year:

2007

Language:

english

File:

PDF, 291 KB

english, 2007

30

A resonance Rayleigh scattering study of unlabeled and pyrene-labeled poly(acrylic acid) polymers

Telma Costa, J. Seixas de Melo

Journal:

Journal of Molecular Structure

Year:

2009

Language:

english

File:

PDF, 510 KB

english, 2009

31

Interactions between surfactants and {1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl}

H.D. Burrows, V.M.M. Lobo, J. Pina, M.L. Ramos, J. Seixas de Melo, A.J.M. Valente, M.J. Tapia, S. Pradhan, U. Scherf, S.I. Hintschich, C. Rothe, A.P. Monkman

Journal:

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Year:

2005

Language:

english

File:

PDF, 203 KB

english, 2005

32

Hole formation and transfer in poly[9,9-di(ethylhexyl)fluorene] and an amine end-capped derivative in solution

H.D. Burrows, J. Seixas de Melo, M. Forster, R. Güntner, U. Scherf, A.P. Monkman, S. Navaratnam

Journal:

Chemical Physics Letters

Year:

2004

Language:

english

File:

PDF, 231 KB

english, 2004

33

The effect of substitution and isomeric imperfection on the photophysical behaviour of p-phenylenevinylene trimers

J. Seixas de Melo, J. Pina, H.D. Burrows, S. Brocke, O. Herzog, E. Thorn-Csányi

Journal:

Chemical Physics Letters

Year:

2004

Language:

english

File:

PDF, 292 KB

english, 2004

34

On the triplet state of poly(N-vinylcarbazole)

J. Pina, J. Seixas de Melo, H.D. Burrows, A.P. Monkman, S. Navaratnam

Journal:

Chemical Physics Letters

Year:

2004

Language:

english

File:

PDF, 287 KB

english, 2004

35

Characterisation of the triplet state of a fluorene–terthiophene alternating copolymer

H.D. Burrows, L.G. Arnaut, J. Pina, J. Seixas de Melo, N. Chattopadhyay, L. Alcácer, A. Charas, J. Morgado

Journal:

Chemical Physics Letters

Year:

2005

Language:

english

File:

PDF, 135 KB

english, 2005

36

Characterisation of the triplet state of a fluorene–terthiophene alternating copolymer [Chem. Phys. Lett. 402 (2005) 197–201]

H.D. Burrows, L.G. Arnaut, J. Pina, J. Seixas de Melo, N. Chattopadhyay, L. Alcácer, A. Charas, J. Morgado

Journal:

Chemical Physics Letters

Year:

2005

Language:

english

File:

PDF, 50 KB

english, 2005

37

Singlet and triplet energy transfer in a bichromophoric system with anthracene covalently linked through sulfonamide to a meso-tetraphenylporphyrin

J. Seixas de Melo, Abílio J.F.N. Sobral, A.M.d’A. Rocha Gonsalves, Hugh D. Burrows

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

2005

Language:

english

File:

PDF, 404 KB

english, 2005

38

A comprehensive study of the spectral and photophysical properties of arylthiophenes

J. Seixas de Melo, J. Pina, L.M. Rodrigues, R.S. Becker

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

2008

Language:

english

File:

PDF, 683 KB

english, 2008

39

Fast photochromic sterically hindered benzo[1,3]oxazines

Yaroslav Prostota, Paulo Jorge Coelho, João Pina, João Seixas de Melo

Journal:

Journal of Photochemistry and Photobiology A: Chemistry

Year:

2010

Language:

english

File:

PDF, 464 KB

english, 2010

40

Cationic fluorene-thiophene diblock copolymers: Aggregation behaviour in methanol/water and its relation to thin film structures

Andrea Gutacker, Nils Koenen, Ullrich Scherf, Sylwia Adamczyk, João Pina, Sofia M. Fonseca, Artur J.M. Valente, Rachel C. Evans, J. Seixas de Melo, Hugh D. Burrows, Matti Knaapila

Journal:

Year:

2010

Language:

english

File:

PDF, 614 KB

english, 2010

41

Intramolecular excimer formation and sensing behavior of new fluorimetric probes and their interactions with metal cations and barbituric acids

C. Lodeiro, J.C. Lima, A.J. Parola, J.S. Seixas de Melo, J.L. Capelo, B. Covelo, A. Tamayo, B. Pedras

Journal:

Sensors and Actuators B: Chemical

Year:

2006

Language:

english

File:

PDF, 577 KB

english, 2006

42

Switching from intramolecular energy transfer to intramolecular electron transfer by the action of pH and Zn2+ co-ordination

M.Teresa Albelda, Pilar Dı́az, Enrique Garcı́a-España, João C. Lima, Carlos Lodeiro, J. Seixas de Melo, A. Jorge Parola, Fernando Pina, Conxa Soriano

Journal:

Chemical Physics Letters

Year:

2002

Language:

english

File:

PDF, 159 KB

english, 2002

43

Spectroscopic characterization of α- and γ-pyrones and their substituted 4-hydroxy and 4-methoxy derivatives: an integrated infrared, photophysical and theoretical study

J Seixas de Melo, G Quinteiro, J Pina, S Breda, R Fausto

Journal:

Journal of Molecular Structure

Year:

2001

Language:

english

File:

PDF, 203 KB

english, 2001

44

Spectroscopy and photophysics of 4- and 7-hydroxycoumarins and their thione analogs

J Seixas de Melo, P.F Fernandes

Journal:

Journal of Molecular Structure

Year:

2001

Language:

english

File:

PDF, 223 KB

english, 2001

45

Triplet state dynamics on isolated conjugated polymer chains

H.D. Burrows, J. Seixas de Melo, C. Serpa, L.G. Arnaut, M.da G. Miguel, A.P. Monkman, I. Hamblett, S. Navaratnam

Journal:

Chemical Physics

Year:

2002

Language:

english

File:

PDF, 286 KB

english, 2002

46

Fluorescence studies on the interaction between pyrene-labelled poly(acrylic acid) and cyclodextrins

J Sérgio Seixas de Melo, Telma Costa, Noémia Oliveira, Karin Schillén

Journal:

Polymer International

Year:

2007

Language:

english

File:

PDF, 957 KB

english, 2007

47

The effect of γ-cyclodextrin addition in the self-assembly behavior of pyrene labeled poly(acrylic) acid with different chain sizes

Telma Costa, J. S. Seixas de Melo

Journal:

Journal of Polymer Science Part A: Polymer Chemistry

Year:

2008

Language:

english

File:

PDF, 568 KB

english, 2008

48

Thiophene–phenylene/naphthalene-based step-ladder copolymers

Torsten W. Bünnagel, Benjamin S. Nehls, Frank Galbrecht, Kristina Schottler, Christof J. Kudla, Markus Volk, João Pina, João S. Seixas de Melo, Hugh D. Burrows, Ullrich SCherf

Journal:

Journal of Polymer Science Part A: Polymer Chemistry

Year:

2008

Language:

english

File:

PDF, 227 KB

english, 2008

49

Energy transfer from fluorene-based conjugated polyelectrolytes to on-chain and self-assembled porphyrin units

Ana T. Marques, Sara M. A. Pinto, Carlos J. P. Monteiro, J. Sérgio Seixas de Melo, Hugh D. Burrows, Ullrich Scherf, Mário J. F. Calvete, Mariette M. Pereira

Journal:

Journal of Polymer Science Part A: Polymer Chemistry

Year:

2012

Language:

english

File:

PDF, 1.05 MB

english, 2012

50

Evaluation of a broad variety of coumarins, chromones, their furohomologues and thione analogues as phototoxins activated by UVA and visible light

Marta L. Borges, Olivia C. Matos, Isabel Pais, J. Seixas De Melo, Cǎndido P. Ricardo, António MacAnita, Ralph S. Becker

Journal:

Pest Management Science

Year:

1995

Language:

english

File:

PDF, 610 KB

english, 1995

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