Materials Map

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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Freire, Cristina

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (55/55 displayed)

  • 2023Hybrids Composed of an Fe-Containing Wells–Dawson Polyoxometalate and Carbon Nanomaterials as Promising Electrocatalysts for the Oxygen Reduction Reaction3citations
  • 2022Electrocatalytic Oxygen Reduction Reaction on 48-Tungsto-8-Phosphate Wheel Anchored on Carbon Nanomaterials4citations
  • 2022Unveiling the structural transformations of the PW11Co@ZIF-67 nanocomposite induced by thermal treatment9citations
  • 2021Au/Ag nanoparticles-decorated TiO2 with enhanced catalytic activity for nitroarenes reduction23citations
  • 2021Nanocomposites Prepared from Carbon Nanotubes and the Transition Metal Dichalcogenides WS2 and MoS2 via Surfactant-Assisted Dispersions as Electrocatalysts for Oxygen Reactions17citations
  • 2021Carbon nanotube/graphene nanocomposites built via surfactant-mediated colloid assembly as metal-free catalysts for the oxygen reduction reaction9citations
  • 2021Decorating MOF-74-derived nanocarbons with a sandwich-type polyoxometalate to enhance their OER activity: Exploring the underestimated bulk-deposition approach25citations
  • 2020Advanced framework-modified POM@ZIF-67 nanocomposites as enhanced oxygen evolution reaction electrocatalysts109citations
  • 2020Metal Oxide (Co3O4 and Mn3O4) Impregnation into S, N-doped Graphene for Oxygen Reduction Reaction (ORR)27citations
  • 2020Oxygen Evolution Reaction Electrocatalytic Improvement in POM@ZIF Nanocomposites: A Bidirectional Synergistic Effect75citations
  • 2019Electrocatalytic activity of new Mn3O4@oxidized graphene flakes nanocomposites toward oxygen reduction reaction34citations
  • 2019Development of a disposable paper-based potentiometric immunosensor for real-time detection of a foodborne pathogen92citations
  • 2019Cu-based N-doped/undoped graphene nanocomposites as electrocatalysts for the oxygen reduction6citations
  • 2018Co3O4 Nanoparticles Anchored on Selectively Oxidized Graphene Flakes as Bifunctional Electrocatalysts for Oxygen Reactions18citations
  • 2018Polyoxotungstate@carbon nanocomposites as Oxygen Reduction Reaction (ORR) electrocatalysts49citations
  • 2018Polyoxometalate-graphene Electrocatalysts for the Hydrogen Evolution Reaction73citations
  • 2017Multicolour Electrochromic Film Based on a TiO2@poly[Ni(salen)] Nanocomposite with Excellent Electrochemical Stability17citations
  • 2017Graphene-poly(nickel complex) as novel electrochromic nanocomposite for the fabrication of a robust solid-state device10citations
  • 2017Highly Active Ruthenium Supported on Magnetically Recyclable Chitosan-Based Nanocatalyst for Nitroarenes Reduction42citations
  • 2017Novel hybrid based on a poly[Ni(salen)] film and WO3 nanoparticles with electrochromic properties18citations
  • 2017PMo11V@N-CNT electrochemical properties and its application as electrochemical sensor for determination of acetaminophen19citations
  • 2017Multicolour Electrochromic Film Based on a TiO2@poly[Ni(sa/en)] Nanocomposite with Excellent Electrochemical Stability17citations
  • 2017N-doped few-layered graphene-polyNi complex nanocomposite with excellent electrochromic properties19citations
  • 2016Phosphomolybdate@Carbon-Based Nanocomposites as Electrocatalysts for Oxygen Reduction Reaction18citations
  • 2016High-Performance Electrochromic Devices Based on Poly[Ni(salen)]-Type Polymer Films62citations
  • 2015L-Serine functionalized clays: Preparation and characterization9citations
  • 2015Carbon Nanomaterial-Phosphomolybdate Composites for Oxidative Electrocatalysis63citations
  • 2015MnFe2O4@CNT-N as novel electrochemical nanosensor for determination of caffeine, acetaminophen and ascorbic acid95citations
  • 2015Biomolecules electrochemical sensing properties of a PMo11V@N-doped few layer graphene nanocomposite18citations
  • 2015Sucrose-derived activated carbons: electron transfer properties and application as oxygen reduction electrocatalysts35citations
  • 2015Biomolecules Electrochemical Sensing Properties of a PMo11V@N-Doped Few Layer Graphene Nanocomposite18citations
  • 2014Sensitive bi-enzymatic biosensor based on polyphenoloxidases-gold nanoparticles-chitosan hybrid film-graphene doped carbon paste electrode for carbamates detection79citations
  • 2014Novel electrochemical sensor based on N-doped carbon nanotubes and Fe3O4 nanoparticles: Simultaneous voltammetric determination of ascorbic acid, dopamine and uric acid111citations
  • 2013Photocatalytic degradation of Reactive Black 5 with TiO2-coated magnetic nanoparticles77citations
  • 2013Novel Composite Material Polyoxovanadate@MIL-101(Cr): A Highly Efficient Electrocatalyst for Ascorbic Acid Oxidation105citations
  • 2013Alkene epoxidation by manganese(III) complexes immobilized onto nanostructured carbon CMK-345citations
  • 2012Hybrid layer-by-layer films based on lanthanide-bridged silicotungstates and poly(ethylenimine)22citations
  • 2012Structural studies of lead lithium borate glasses doped with silver oxide70citations
  • 2012Oxidovanadium(IV) acetylacetonate immobilized onto CMK-3 for heterogeneous epoxidation of geraniol39citations
  • 2011[VO(acac)(2)] hybrid catalyst: from complex immobilization onto silica nanoparticles to catalytic application in the epoxidation of geraniol52citations
  • 2011Modulating spectroelectrochemical properties of [Ni(salen)] polymeric films at molecular level31citations
  • 2011Epoxidation of olefins catalyzed by manganese(III) salen complexes grafted to porous heterostructured clays52citations
  • 2010Superparamagnetic gamma-Fe(2)O(3)@SiO(2) nanoparticles: a novel support for the immobilization of [VO(acac)(2)]112citations
  • 2010Solid-State Electrochromic Cells Based on [M(salen)]-Derived Electroactive Polymer Films15citations
  • 2010Insights into electronic and structural properties of novel Pd(II) salen-type complexes22citations
  • 2010Templated synthesis of carbon materials mediated by porous clay heterostructures33citations
  • 2010Structural and electrochemical characterisation of [Pd(salen)]-type conducting polymer films28citations
  • 2009Modulation of electroactive polymer film dynamics by metal ion complexation and redox switching7citations
  • 2008Electrocolorimetry of electrochromic materials on flexible ITO electrodes24citations
  • 2007Correlating structure and ion recognition properties of [Ni(salen)]-based polymer films36citations
  • 2006Amine-functionalised hexagonal mesoporous silica as support for copper(II) acetylacetonate catalyst52citations
  • 2006Covalent attachment of chiral manganese(III) salen complexes onto functionalised hexagonal mesoporous silica and application to the asymmetric epoxidation of alkenes55citations
  • 2005Asymmetric epoxidation of alkenes by a chiral manganese(III) salen complex anchored onto a functionalised hexagonal mesoporous silicacitations
  • 2002Oxidation of ferrocene derivatives at a poly[Ni(saltMe)] modified electrode20citations
  • 2000Electrochemical and X-ray studies of nickel(II) Schiff base complexes derived from salicylaldehyde. Structural effects of bridge substituents on the stabilisation of the+3 oxidation state90citations

Places of action

Chart of shared publication
Fernandes, Diana
1 / 2 shared
Jarrais, Bruno
1 / 1 shared
Teillout, Anne-Lucie
1 / 1 shared
Oliveira, Pedro De
1 / 1 shared
Novais, Hugo
1 / 1 shared
Mbomekallé, Israël-Martyr
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Jarrais, B.
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Guerrero Ruiz, A.
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Rodriguez Ramos, I.
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Fernandes, Dm
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Novais, Hc
1 / 1 shared
Haider, A.
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Kortz, U.
2 / 3 shared
Abdelkader-Fernández, Vk
1 / 1 shared
Cunha-Silva, L.
1 / 1 shared
Perez-Mendoza, M.
1 / 1 shared
Balula, Ss
5 / 7 shared
Pereira, C.
11 / 55 shared
Rocha, M.
4 / 7 shared
Abreu, B.
2 / 5 shared
Ferreira, P.
1 / 10 shared
Marques, Ef
2 / 11 shared
Nunes, M.
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Fernandes, Ajs
2 / 4 shared
Abdelkader Fernandez, Vk
3 / 3 shared
Cunha Silva, L.
5 / 11 shared
Mathumba, P.
1 / 1 shared
Iwuoha, Ei
1 / 1 shared
Matos, R.
1 / 4 shared
Rocha, Im
4 / 4 shared
Pereira, Mfr
4 / 32 shared
Araujo, Mp
4 / 5 shared
Delerue Matos, C.
3 / 8 shared
Silva, Nfd
1 / 1 shared
Magalhaes, Jmcs
1 / 4 shared
Almeida, Cmr
1 / 3 shared
Goncalves, Mp
1 / 11 shared
Morales, Mv
1 / 1 shared
Rodriguez-Ramos, I.
1 / 1 shared
Serp, Philippe
2 / 20 shared
Bacsa, Revathi
3 / 10 shared
Novais, Hugo C.
1 / 1 shared
Bachiller-Baeza, Belen
1 / 2 shared
Guerrero-Ruiz, A.
1 / 2 shared
Mougharbel, As
1 / 1 shared
Hillman, A. Robert
1 / 6 shared
Moura, Cosme
3 / 4 shared
Nunes, Marta
4 / 5 shared
Moura, C.
4 / 27 shared
Fonseca, J.
7 / 15 shared
Hillman, R.
2 / 3 shared
Liew, Kh
1 / 1 shared
Pires, Al
1 / 10 shared
Pereira, Am
5 / 35 shared
Yusop, Rm
1 / 1 shared
Juan, Jc
1 / 1 shared
Peixoto, Af
1 / 2 shared
Yarmo, Ma
1 / 1 shared
Hillman, Ar
8 / 16 shared
Bachiller Baeza, B.
2 / 2 shared
Serp, Phillipe
1 / 1 shared
Castillejos, Eva
1 / 2 shared
Ferreira, Rv
1 / 1 shared
Araujo, Mariana
1 / 2 shared
De Oliveira, P.
2 / 2 shared
Mbomekalle, Im
2 / 2 shared
Araujo, M.
2 / 6 shared
Sousa, Cad
1 / 1 shared
Rodriguez Borges, Je
1 / 3 shared
Guerrero-Ruiz, Antonio
1 / 3 shared
Magalhães, Júlia M. C. S.
1 / 1 shared
Delerue-Matos, Cristina
1 / 11 shared
Rodríguez-Ramos, Inmaculada
1 / 3 shared
Silva, Nádia
1 / 1 shared
Pereira, Clara
1 / 1 shared
Bachiller-Baeza, Belén
1 / 1 shared
Mbomekalle, Israel-Martyr
1 / 2 shared
Oliveira, P., De
1 / 1 shared
Fernandes, Diana M.
1 / 3 shared
Carvalho, Ricardo J.
1 / 1 shared
Mestre, As
1 / 1 shared
Moura, Cn
1 / 1 shared
Carvalho, Ap
5 / 7 shared
Bacsa, R.
1 / 1 shared
Carvalho, Rj
1 / 1 shared
Serp, P.
1 / 9 shared
De Lima Neto, P.
1 / 2 shared
Correia, An
1 / 2 shared
Oliveira, Mbpp
1 / 2 shared
Fatima Barroso, Mf
1 / 2 shared
Morais, S.
1 / 2 shared
Oliveira, Tmbf
1 / 2 shared
Costa, M.
1 / 12 shared
Tavares, Pb
2 / 26 shared
Peres, Ja
1 / 1 shared
Lucas, Ms
1 / 1 shared
Faria, Jl
1 / 12 shared
Barbosa, Ads
1 / 1 shared
Pires, J.
5 / 8 shared
Rebelo, Slh
2 / 3 shared
Araujo, Jp
4 / 91 shared
Gaspar, H.
1 / 2 shared
Andrade, M.
3 / 6 shared
Juliao, D.
1 / 1 shared
Ananias, D.
1 / 4 shared
Sooraj Hussain, Ns
1 / 2 shared
Coelho, J.
1 / 16 shared
Dorbes, S.
1 / 1 shared
Barros, D.
1 / 1 shared
Silva, Jf
1 / 1 shared
Pintado, Jm
1 / 1 shared
Blanco, G.
1 / 8 shared
Magalhaes, Al
4 / 6 shared
Patricio, S.
2 / 3 shared
Tedim, J.
5 / 22 shared
Kuzniarska Biernacka, I.
1 / 3 shared
Pereira, E.
1 / 6 shared
Quaresma, P.
1 / 1 shared
Pinheiro, C.
2 / 5 shared
Pina, F.
2 / 4 shared
Branco, A.
1 / 2 shared
Jorge Parola, Aj
1 / 1 shared
Carneiro, A.
2 / 2 shared
Teresa Duarte, Mt
1 / 1 shared
Martinez, J.
1 / 7 shared
Santos, C.
1 / 8 shared
Vieira, Al
1 / 1 shared
Martins, A.
1 / 63 shared
Biernacki, K.
1 / 3 shared
Gurman, Sj
2 / 2 shared
Parola, Aj
1 / 1 shared
Bessada, R.
1 / 1 shared
Whitwood, Ac
1 / 1 shared
Clark, Jh
3 / 4 shared
Wilson, K.
3 / 11 shared
Silva, Ar
3 / 5 shared
Vilas Boas, M.
2 / 3 shared
Pereira, Em
1 / 2 shared
Duarte, Mt
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De Castro, B.
1 / 3 shared
Santos, Ic
1 / 1 shared
Piedade, Mfm
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Chart of publication period
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2022
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Co-Authors (by relevance)

  • Fernandes, Diana
  • Jarrais, Bruno
  • Teillout, Anne-Lucie
  • Oliveira, Pedro De
  • Novais, Hugo
  • Mbomekallé, Israël-Martyr
  • Jarrais, B.
  • Guerrero Ruiz, A.
  • Rodriguez Ramos, I.
  • Fernandes, Dm
  • Novais, Hc
  • Haider, A.
  • Kortz, U.
  • Abdelkader-Fernández, Vk
  • Cunha-Silva, L.
  • Perez-Mendoza, M.
  • Balula, Ss
  • Pereira, C.
  • Rocha, M.
  • Abreu, B.
  • Ferreira, P.
  • Marques, Ef
  • Nunes, M.
  • Fernandes, Ajs
  • Abdelkader Fernandez, Vk
  • Cunha Silva, L.
  • Mathumba, P.
  • Iwuoha, Ei
  • Matos, R.
  • Rocha, Im
  • Pereira, Mfr
  • Araujo, Mp
  • Delerue Matos, C.
  • Silva, Nfd
  • Magalhaes, Jmcs
  • Almeida, Cmr
  • Goncalves, Mp
  • Morales, Mv
  • Rodriguez-Ramos, I.
  • Serp, Philippe
  • Bacsa, Revathi
  • Novais, Hugo C.
  • Bachiller-Baeza, Belen
  • Guerrero-Ruiz, A.
  • Mougharbel, As
  • Hillman, A. Robert
  • Moura, Cosme
  • Nunes, Marta
  • Moura, C.
  • Fonseca, J.
  • Hillman, R.
  • Liew, Kh
  • Pires, Al
  • Pereira, Am
  • Yusop, Rm
  • Juan, Jc
  • Peixoto, Af
  • Yarmo, Ma
  • Hillman, Ar
  • Bachiller Baeza, B.
  • Serp, Phillipe
  • Castillejos, Eva
  • Ferreira, Rv
  • Araujo, Mariana
  • De Oliveira, P.
  • Mbomekalle, Im
  • Araujo, M.
  • Sousa, Cad
  • Rodriguez Borges, Je
  • Guerrero-Ruiz, Antonio
  • Magalhães, Júlia M. C. S.
  • Delerue-Matos, Cristina
  • Rodríguez-Ramos, Inmaculada
  • Silva, Nádia
  • Pereira, Clara
  • Bachiller-Baeza, Belén
  • Mbomekalle, Israel-Martyr
  • Oliveira, P., De
  • Fernandes, Diana M.
  • Carvalho, Ricardo J.
  • Mestre, As
  • Moura, Cn
  • Carvalho, Ap
  • Bacsa, R.
  • Carvalho, Rj
  • Serp, P.
  • De Lima Neto, P.
  • Correia, An
  • Oliveira, Mbpp
  • Fatima Barroso, Mf
  • Morais, S.
  • Oliveira, Tmbf
  • Costa, M.
  • Tavares, Pb
  • Peres, Ja
  • Lucas, Ms
  • Faria, Jl
  • Barbosa, Ads
  • Pires, J.
  • Rebelo, Slh
  • Araujo, Jp
  • Gaspar, H.
  • Andrade, M.
  • Juliao, D.
  • Ananias, D.
  • Sooraj Hussain, Ns
  • Coelho, J.
  • Dorbes, S.
  • Barros, D.
  • Silva, Jf
  • Pintado, Jm
  • Blanco, G.
  • Magalhaes, Al
  • Patricio, S.
  • Tedim, J.
  • Kuzniarska Biernacka, I.
  • Pereira, E.
  • Quaresma, P.
  • Pinheiro, C.
  • Pina, F.
  • Branco, A.
  • Jorge Parola, Aj
  • Carneiro, A.
  • Teresa Duarte, Mt
  • Martinez, J.
  • Santos, C.
  • Vieira, Al
  • Martins, A.
  • Biernacki, K.
  • Gurman, Sj
  • Parola, Aj
  • Bessada, R.
  • Whitwood, Ac
  • Clark, Jh
  • Wilson, K.
  • Silva, Ar
  • Vilas Boas, M.
  • Pereira, Em
  • Duarte, Mt
  • De Castro, B.
  • Santos, Ic
  • Piedade, Mfm
OrganizationsLocationPeople

article

Modulation of electroactive polymer film dynamics by metal ion complexation and redox switching

  • Freire, Cristina
  • Hillman, Ar
  • Tedim, J.
Abstract

The viscoelastic properties of [Ni(salen)(crown ether)] conducting polymer films were characterized using high frequency acoustic wave resonators. Shear moduli values respond to film redox state and barium ion complexation. The variations in storage and loss moduli are significant, but always such that the films are viscoelastic, i.e. a soft material. Both components are increased by polymer oxidation, the loss modulus to a greater extent. In the absence of Ba(2+), the similarity of shear moduli-and nanogravimetric-potential signatures (for acoustically thick and thin films, respectively) provides a compositional explanation for changes in film dynamics. Ba(2+) uptake restricts the extent of film redox switching. In the presence of Ba(2+) the pattern of redox driven shear modulus changes is unaltered, but the values of both components are systematically higher. These changes are interpreted in terms of (i) space limited accommodation of counter ions (ii) crown-Ba(2+)-crown crosslinking between polymer chains, and (iii) decreased free volume for plasticizing solvent. We suggest that the first of these is the origin of the restricted charge injection (controlled by electroneutrality), the second of the increased storage moduli, and the third of the increased loss moduli. Observations at different time scales, via acoustic wave resonator harmonics, reveal increases in both shear moduli components with increasing frequency; these are considered in the light of simple mechanical models for polymer dynamics.

Topics
  • impedance spectroscopy
  • polymer
  • thin film
  • Barium