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    h-index 17
    1008 citations w/o self citations
    70% papers as corresponding or 1st author
       
    2018 
    (49) Analysis of the mechanical properties and biocompatibility of alkene-styrene copolymers for potential use as second skin substrates.
    Siddhi C. B. Lama, Ermelinda Maçôas , Francisco Estrany Coda, Carlos Alemán, Eloi Pineda, Frederico Castelo Ferreira* (submitted)
       
    (48) Structural Color and Rheology Characterization of Self-Assembled Poly(N-Isopropylacrylamide-Methacrylic Acid) Microgels in Water
    Gema Marcelo *, Laurinda R. P. Areias, Ermelinda Maçôas , Francisco Mendicuti, Mercedes Valiente, J. M. G. Martinho*, José Paulo S. Farinha* (submitted)
         
    (47) Insight into the malaria parasite cellular targets of indoloquinoline derivatives
    Inês F. A. Mariz, Sandra Pinto, Fátima Nogueira, Alexandra Paulo, Rui Moreira, and Ermelinda M. S. Maçôas (in prep)
         
    (46) Two-photon absorption of perylene-3,4:9,10-tetracarboxylic acid bisimides: effect of substituents in the bay
    Tiago Silva, Inês F. A. Mariz, Carlos Baleizão and Ermelinda Maçôas* (in prep)
         
    (45) Selective two-photon absorption in carbon dots: a piece of the photoluminescence emission puzzle Carla I Santos*, Inês F. A. Mariz, Sandra Pinto, Gil Gonçalves, Igor Bdikin, Paula Marques, Maria da Graça P. M. S. Neves, Jose Gaspar-Martinho and Ermelinda Maçôas * , Nanoscale , 2018 ASAP
      Optical spectroscopy of carbon nanodots reveals excitation-mode-dependent emission. Linear and nonlinear excitation at the same total energy result in different emission spectra.
         
    (44) Aggregation-induced emission of [3]cumulenes functionalized with heptagon-containing polyphenylenes
    Vicente G. Jiménez, Rubén Tapia, Miguel A. Medel, Inês F. A. Mariz, Tânia Ribeiro, Victor Blanco, Juan M. Cuerva, Ermelinda Maçôas and Araceli G. Campaña* Chem. Commun., 2018, 54, 3359
      Turning on the fluorescence of [3]cumulenes: we report the luminescence at room temperature upon aggregation of [3]cumulenes functionalized with propeller-like heptagon-containing polyphenylenes. These endgroups turn on the emission of a [3]cumulene by steric protection and restriction of their intramolecular rotations in the aggregates.
         
    (43) Porphyrin-oligopyridine triads: synthesis and optical properties
    Nuno M. M. Moura,* Inês F. A. Mariz, José A. S. Cavaleiro, Artur M. S. Silva, Carlos Lodeiro, José M. G. Martinho, Ermelinda M. S. Maçôas, Maria G. P. M. S. Neves,* J. Org. Chem., 2018, 83, 5282
      The synthesis of two triads with two porphyrinyl units linked by oligopyridine derivatives and a new ß-functionalized porphyrin-dihydroazepine is described. All compounds have fluorescence emission quantum yields in the range of meso-tetraphenylporphyrin (16–22%).
         
    (42) Enantiopure distorted ribbon-shaped nanographene molecule combining two-photon absorption-based upconversion and circularly polarized luminescence
    Carlos M. Cruz, Irene R. Márquez, Inês F. A. Mariz, Victor Blanco, Carlos Sánchez-Sánchez, Jesús M. Sobrado, José A. Martín-Gago, Juan M. Cuerva, Ermelinda Maçôas* , and Araceli G. Campaña*, Chem. Sci. 2018,9, 3917
      Inducing defects in a ribbon-shaped nanographene leads to a new combination of optical properties: Two-Photon Upconversion and Circularly Polarized Emission
       
    (41) New biocompatible hybrids based on nano-graphene oxide covalently linked to glycolporphyrins: synthesis, characterization and biological evaluation
    Carla Santos*,Gil Gonçalves, Mónica Cicuéndez, Inês Mariz, Virgília S. Silva, Helena Oliveira, Paula Marques*, Ermelinda M. S. Maçôas*, Maria G. P. M. S. Neves, José M. G. Martinho, Carbon, 2018, 135, 202
      New nanoGO-porphyrins hybrids were prepared showing good biocompatibility with model human cells (Saos-2), which, given the known activity of porphyrins as photodynamic therapy agents, is very promising for future applications in biomedicine .
    (40) Bio-inspired water-soluble two-photon fluorophore
    Ana C.B. Rodrigues, Nathana B. Lopes, Inês F. A. Mariz, Ermelinda Maçoas , José M. G.Martinho, Frank H. Quina Renata R. Tonelli and Erick Leite Bastos*,Dyes and Pigments, 2018, 150,105.
      Betalains, the main pigments of beetroots and some species of fluorescent flowers, were modified originating water-soluble two-photon probes applied incell imaging
    2017 
    (39) Cryptolepine and quindoline: understanding their photophysics
    Inês F. A. Mariz, Sandra Pinto, João Lavrado, Alexandra Paulo, José M. G. Martinho and Ermelinda M.S. Macoas*,
    Phys. Chem. Chem. Phys. 2017, 10, 10255.
      The insight provided by this study on the fundamental photophysical properties of cryptolepine and quindoline can be used to anticipate the light emitting properties the building blocks of many anti-malaria agents based on indoloquinolines s in different environments within the parasite intraerythrocytic stage.
    2016 
    (38) Stability and Safety of Quercetin-Loaded Cationic Nanoemulsion: In vitro and in vivo assessment
    Michelli F. Dario, Camila A. Oliveira, Lorena R.G. Cordeiro, Catarina Rosado, Inês Mariz, , Ermelinda M.S. Macoas, M. Soledade C.S. Santos, Manuel E. Minas da Piedade, André R. Baby, M. Valéria R. Velasco
    Colloids and Surfaces A: Physicochemical and Engineering Aspects 2016, 506, 591
      A quercetin-loaded nanoemulsion was found highly safe for cosmetic applications. Quercetin in the nanoemulsion shows a high photostability to UV radiation.
    2015 
    (37) Impact of Molecular Organization on Exciton Diffusion in Photosensitive Single-Crystal Halogenated Perylenediimides Charge Transfer Interfaces
    Rui M. Pinto, Wilson Gouveia, Ermelinda M.S. Macoas, Isabel C. Santos, Sebastian Raja, Carlos Baleizão, and Helena Alves,*
    ACS Appl. Mater. & Interfaces 2015, 50, 27720
      Organic single-crystals interfaces betweeb rubrene and perylenediimides (PDIB) were probed with wavelength-dependent photocurrent spectroscopy and their crystal structure resolved. All systems presented a dynamic photoresponse, faster than 500 ms, up to 650 nm. A relationship between molecular organization and favorable exciton diffusion in substituted PDIB was established.
    (36) A 1,3,5-triazine based polymer as a nonlinear near-infrared antenna for two-photon activated volumetric optical memory devices
    I. F. A. Mariz,* C. A. B. Rodrigues, F. Siopa, C.A.M. Afonso, X.Chen, J.M.G. Martinho and, Ermelinda M.S. Macoas*
    J. Mater Chem C 2015, 3(41), 10775
      Multilayer data storage was demonstrated in films of photochromic (PC) molecules doped with a nonlinear Near-IR-antenna polymer based on triazine.The two-photon excitation of the polymer triggers a unidirectional isomerization of the PC molecules (a cycloreversion process from the closed to the open isomer) via FRET.
    (35) Effect of Molecular Stacking on Exciton Diffusion in Crystalline Organic Semiconductors
    Rui M. Pinto, Ermelinda M.S. Macoas, Ana I. S. Neves, Sebastian Raja, Carlos Baleizão, Isabel C. Santos, and Helena Alves,*
    J. Am. Chem Soc 2015,137(22),7104
      Photoresponse measurements on interfaces between perylenediimides and rubrene show higher photocurrent yield (+50%) and extended spectral coverage (+100 nm) due to an increased dimensionality of the percolation network and stronger orbital overlap.
    (34) Nonlinear emission of quinolizinium based dyes with application in single dye/multicolor imaging
    Gema Marcelo, Sandra Pinto, Tatiana Cañeque, Ana M. Cuadro, Juan J. Vaquero, José M. G. Martinho and Ermelinda M.S. Macoas*
    J Phys. Chem A 2015, 118(11) 2351
      Charged molecules based on the quinolizinum cation were synthesized and their potential applications as labels in multiphoton fluorescence imaging in biological media was demonstrated.
    (33) Role of Vibrational Dynamics in Electronic Relaxation of Cr(acac)(3)
    Ermelinda M.S. Macoas,Satu Mustalahti, Pasi Myllyperkiö, Henrik Kunttu and Mika Pettersson,*
    J Phys. Chem A 2015, 118(11), 2727
      The excited state relaxation dynamics of Cr(acac)3 was studied by ultrafast infrared spectroscopy. Data from measurements of vibrational cooling in the excited and ground state and thermal deactivation of the lowest excited state were combined to formulate a clear picture of the relaxation dynamics.
    2014 
    (32) New Kind of Hyperbranched Conjugated Polymers Containing Alkyl-modified 2,4,6-Tris(thiophen-2-yl)-1,3,5-triazine Unit for Enhancing Two-photon Absorption
    Pengcheng Zhou, Cheng Zhong, Xingguo Chen,* Jingui Qin, Inês Mariz and Ermelinda M.S. Macoas*
    Macromolecules 2014, 47(19),6679
      Two series of hyperbranched polymers based on alkyl-modified 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine central units linked through fluorene bridges of different lengths have been synthesized via Suzuki coupling.These polymers perform considerably better as nonlinear absorbers than their unsubstituted analogues.
    (31) Enhanced conductivity and photoresponse in rubrene single-crystal/PCBM film heterojunctions
    Rui M. Pinto, Ermelinda M.S. Macoas, Helena Alves*
    J. Mater Chem C 2014, 2 (18) 3639
      A large photoresponse was observed at the interface between a highly ordered rubrene single-crystal and an amorphous fullerene film, with responsivity values 300 times higher than the corresponding bulk-heterojunctions and isolated single-crystal.This results provide important insights to harnessing excitons generated in both the electron donor and acceptor materials increasing the efficiency in organic devices.
    (30) Click and go: simple and fast folic acid conjugation
    Alexandre F. Trindade, Raquel F.M. Frade, Ermelinda M.S. Macoas, Catarina A.B. Rodrigues, José M.G. Martinho* and Carlos A.M. Afonso
    Organic & Biomolecular Chemistry 2014,12 (20) 3181
      A novel synthetic tool for the functionalization of folic acid and its linkage into small molecules (including fluorescent dyes), polymers and heterogeneous materials was demonstrated by using efficient non-metal based click chemistry.
    2013 
    (29) Excited-State Proton Transfer of Fluorescein Anion as an Ionic Liquid Component
    Catarina A. B. Rodrigues, Cátia Graça, Ermelinda Maçôas*, Alexander Fedorov, Carlos A. M. Afonso, and José M. G. Martinho
    J. Phys. Chem. B 2013 117 (45) 14108-14114
      Fluorescent ionic liquids (FILs) incorporating the fluorescein anion have been prepared by anion exchange of the parent quaternary ammonium chloride (Quat+Cl-) ionic liquid.
    (28) Interaction of toremifene with dipalmitoyl-phosphatidyl-glycerol in monolayers at the air–water interface followed by fluorescence microscopy in Langmuir–Blodgett films
    Romão, Rute I; Maçôas, Ermelinda ; Martinho, José M; Gonçalves da S. A. M.
    Thin Solid Films2013 534 584 - 590
      The interaction of the drug toremifene (TOR), an antiestrogen drug derivative of tamoxifen,with the cell membrane was studied using langmuir monolayers of membrane mimetic dipalmitoyl-phosphatidyl-glycerol (DPPG)
    (27) Photoconductive response in organic charge transfer interfaces with high quantum efficiency
    Alves, Helena; Pinto, Rui M; Maçôas, Ermelinda S .
    Nature Communications20134 1842 - 1842

      The photoconductivity behaviour of single-crystal charge transfer interfaces composed of rubrene and TCNQ presents a responsivity reaching 1 A/W, corresponding to an external quantum efficiency of nearly 100%. This result opens the possibility of using organic single-crystal interfaces in photonic applications.
    (26) Unsaturated oxazolones as nonlinear fluorophores
    Rodrigues, Catarina A; Mariz, Inês F; Maçôas, Ermelinda M* ; Afonso, Carlos A; Martinho, José M.
    Dyes and Pigments 2013 99(3) 642 - 652

      Linear and nonlinear photophysical properties of unsaturated oxazolones were studied. By engineering this green fluorescent protein analogue core we have prepared molecules with high two-photon absorption cross-sections (TPA) 200-500 GM and fluorescence quantum yields up to 0.75.
    (25) Molecular architecture effects in two-photon absorption: from octupolar molecules to polymers and hybrid polymer nanoparticles based on 1,3,5-triazine
    Mariz, Inês F. A; Maçôas, Ermelinda M. S* ; Martinho, José M. G; Zou, Li; Zhou, Pengcheng; Chen, Xingguo*; Qin, Jingui
    Journal of Materials Chemistry B 2013 1(16) 2169 - 2169
     

    The two-photon absorption of linear polymers and corresponding polymers nanoparticles based on the triazine- thiophen electron acceptor bridged by different elecron donor groups have been studied. Water soluble polymer dots with extremely high TPA cross-sections were obtained (10E6 GM).

    2012 
    (24) Symmetrical and unsymmetrical multibranched D–p–A molecules based on 1,3,5-triazine unit: synthesis and photophysical properties
    Zhang, Liqian; Zou, Li; Xiao, Jiang; Zhou, Pengcheng; Zhong, Cheng; Chen, Xingguo*; Qin, Jingui; Mariz, Inês F. A; Maçôas, Ermelinda M. S. *
    Journal of Materials Chemistry 2012, 22(33) 16781 - 16790

    A series of V-shaped (D-p-A-p-D) and star-shaped ((D-p-)3A) molecules based on the electron acceptor 1,3,5-triazine core have been synthesized.They exhibit strong two-photon absorption activity and only a modest interbranch conjugation effect enhancing the TPA cross-section beyond the additive effect of increasing branch number.
    (23) Two-photon absorption properties of push–pull oxazolones derivatives
    Rodrigues, Catarina A; Mariz, Inês F; Maçôas, Ermelinda M. S. *; Afonso, Carlos A; Martinho, José M.
     Dyes and Pigments 2012 95(3), 713 - 722

      Fluorescent oxazolone derivatives with high two-photon absorption cross-section were synthesized.
    2011 
    (22) V-shaped cationic dye for nonlinear optical bioimaging
    Maçôas, Ermelinda M. S. *; Marcelo, Gema; Pinto, Sandra; Cañeque, Tatiana; Cuadro, Ana M; Vaquero, Juan J; Martinho, José; M. G.
    Chemical Communications 2011, 47( 26) ,7374 - 7374

      A new fluorescent marker for multiphoton imaging was developed with D-p-A+-p-D geometry based on the quinolizinium cation as electron acceptor (A+). The dye distributed all over the cell, including the nuceus.
    (21) Synthesis and photophysical properties of hyperbranched polyfluorenes containing 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine as the core
    Zou, Li; Liu, Yan; Ma, Nan; Maçôas, Ermelinda M. S. *; Martinho, José M. G; Pettersson, Mika; Chen, Xingguo; Qin, Jingui.
    Physical Chemistry Chemical Physics 2011, 13(19), 8838 - 8838
      A series of new hyperbranched polymers containing a 2,4,6-tris(thiophen-2-yl)-1,3,5-triazine core unit and polyfluorene chain arms have been synthesized and their two-photon absortion properties properties characterized
    2009
    (20) Vibrational Relaxation of Matrix-Isolated Carboxylic Acid Dimers and Monomers
    Ermelinda M. S. Maçôas* , Pasi Myllyperkiö, Mika Pettersson, and Henrik Kunttu´
    J. Phys. Chem. A, 2009, 113 (26), 7227–7234
      the vibrational dynamics of formic acid and acetic acid isolated in solid argon was probed by femtosecond mid-IR transient absorption spectroscopy upon excitation of the fundamental transition of the carbonyl stretching mode.
    2007
    (19) Relaxation Dynamics of Cr(acac)3 Probed by Ultrafast Infrared Spectroscopy
    Ermelinda M. S. Maçôas*, Robertas Kananavicius, Pasi Myllyperkiö, Mika Pettersson, and Henrik Kunttu
    J. Am. Chem. Soc., 2007, 129, 8934-7935
    .
      The great value of transient IR spectroscopy in inorganic photophysics was illustrated using Cr(acac)3 excited state relaxation dynamics.
    (18) Ultrafast Electronic and Vibrational Energy Relaxation of Fe(acetylacetonate) 3 in Solution
    Ermelinda M. S. Maçôas, Robertas Kananavicius, Pasi Myllyperkiö, Mika Pettersson, and Henrik Kunttu*
    J. Phys. Chem. A., 2007, 111, 2054-2061
    .
      Transient mid-infrared spectroscopy is used to probe the dynamics initiated by excitation of metal-to-ligand and ligand-to-metal charge transfer states of Fe(acac)3 in solution
    2005
    (17) Internal Rotation in Propionic Acid: Near-Infrared Induced Isomerization in Solid Argon
    Ermelinda M. S. Maçôas* , Leonid Khriachtchev , Mika Pettersson , Rui Fausto and Markku Räsänen
    J. Phys. Chem., 2005, 109, 3617-3624
    .
      The conformational space of propionic acid was studied in solid rare-gases using vibrational excitation to disturb the equilibrium and following the site-dependent photoisomerization rates.
    (16)
    Rotational Isomerization of Small Carboxylic Acids Isolated in Argon Matrices: Tunneling and Quantum Yields for the Photoinduced Processes
    Ermelinda M. S. Maçôas, Leonid Khriachtchev* , Mika Pettersson , Rui Fausto and Markku Räsänen
    Phys. Chem. Chem. Phys., 2005, 7 , 743-749
    .
      The photoisomerization and tunneling kinetics of carboxylic acids in solid rare-gases where studied
    2004
    (15)
    Rotational Isomerism of Acetic Acid Isolated in Rare-Gas Matrices: Effect of Medium and Isotopic Substitution on IR-Induced Isomerization Quantum Yield and Cis à Trans Tunneling Rate
    Ermelinda M. S. Maçôas*, Leonid Khriachtchev, Mika Pettersson, Rui Fausto and Markku Räsänen
    J. Chem. Phys., 2004, 121, 1331-1338.
      For the cis ? trans isomerization in the dark, the observed temperature and medium effects indicate the participation of the lattice phonons in the tunneling-induced process.
    (14)
    Photochemistry and Vibrational Spectroscopy of the Trans and Cis Conformers of Acetic Acid in Solid Ar
    Ermelinda M. S. Maçôas, Leonid Khriachtchev, Rui Fausto and Markku Räsänen
    J. Phys. Chem A, 2004, 108, 3380-3389
    .
      The UV photolysis of the matrix-isolated acetic acid reveals very different products from the gas phase.
    (13)
    Infrared-Induced Conformational Interconversion in Carboxylic Acids Isolated in Low-Temperature Rare-Gas matrices(invited paper in an issue dedicated to Young Proeminent Spectroscopists)
    Ermelinda M. S. Maçôas*, Mika Pettersson, L. Khriachtchev, Jan Lundell, Rui Fausto and Markku Räsänen
    Vib. Spectrosc. , 2004, 34, 73-82
    .
      A review of our recent work on the infrared-induced conformational interconversion of carboxylic acids isolated in low-temperature rare-gas matrices is given
    2003
    (12)
    Rotational Isomerism in Acetic Acid: The First Experimental Observation of the High Energy Conformer
    Ermelinda M. S. Maçôas*, Leonid Khriachtchev, Mika Pettersson, Rui Fausto and Markku Räsänen
    J. Am. Chem. Soc., 2003, 125, 16188-16189.
      The elusive high-energy conformer of acetic acid (cis-AA) was detected for the first time in an Ar matrix upon vibrational excitation of the ground conformational state.
    (11)
    Reactive Vibrational Excitation Spectroscopy of Formic Acid in Solid Argon: Quantum Yield for Infrared Induced Trans--> Cis Isomerization and Solid State Effects on the Vibrational Spectrum
    Ermelinda M. S. Maçôas*, Mika Pettersson, Leonid Khriachtchev, Rui Fausto and Markku Räsänen
    J. Chem. Phys., 2003, 119, 11765-11772
    .
      Site-selective isomerization of formic acid in solid-rare gases was followed by reactive vibrational excitation spectroscopy
    (10)
    Conformational Isomerization of Formic Acid by Vibrational Excitation at Energies Below the Torsional Barrier
    Mika Pettersson, Ermelinda M. S. Maçôas, Leonid Khriachtchev, Rui Fausto and Markku Räsänen
    J. Am. Chem. Soc., 2003, 125, 4058-4059
    .
      Intramolecular proton tunneling in carboxylic acids was studied in a low-temperature noble gas matrix
    (9)
    Vibrational Spectroscopy of Cis- and Trans-Formic Acid in Solid Argon
    Ermelinda M. S. Maçôas*, Jan Lundell, Mika Pettersson, Leonid Khriachtchev, Rui Fausto and Markku Räsänen
    J. Mol. Spectrosc., 2003, 219, 70-80
    .
    2002
    (8)
    Cis-->Trans Conversion of Formic Acid by Dissipative Tunneling in Solid Rare Gases: Influence of Environment on the Tunneling Rate
    Mika Pettersson*, Ermelinda M. S. Maçôas, L. Khriachtchev, Jan Lundell and Markku Räsänen
    J. Chem. Phys., 2002, 117, 9095-9098
    .
      Temperature and local environment are shown to have a significant influence in the rate of conformational conversion by tunneling of formic acid in solid rare-gases
    (7)
    Conformational Memory in Photodissociation of Formic Acid
    Leonid Khriachtchev* , Ermelinda M. S. Maçôas, Mika Pettersson and Markku Räsänen
    J. Am. Chem. Soc., 2002, 124, 10994-10995.
      Optically controlled reactivity was beautifully illustrated with the conformationally selective dissociation of formic acid.
    2001
    (6)
    Low Temperature Matrix-Isolation and Solid State Vibrational Spectra of TetrazoleSusana
    C. S. Bugalho, Ermelinda M.S. Maçôas, M. Lurdes S. Cristiano and Rui Fausto*
    Phys. Chem. Chem. Phys., 2001, 3, 3541-3547
    .

    (5)
    Photochemical Reactivity of Matrix Isolated Monomeric Carboxylic Acids
    Rui Fausto* and Ermelinda M. S. Maçôas
    J. Mol. Struct., 2001, 563-564, 27-4
    0
    (4)
    A Matrix Isolation Spectroscopic and Quantum Chemical Study of Fumaric and Maleic Acid
    Ermelinda M. S. Maçôas, Rui Fausto*, Jan Lundell, Mika Pettersson, L. Khriachtchev and Markku Räsänen
    J. Phys. Chem. A, 2001, 105, 3922.
    2000
    (3)
    Conformational Analysis and Near Infrared Conformational Interconversion of Malonic Acid Isolated In An Argon Matrix
    Ermelinda M. S. Maçôas, Rui Fausto*, Jan Lundell, Mika Pettersson, L. Khriachtchev and Markku Räsänen
    J. Phys. Chem. A, 2000, 104 11725.
    (2)
    Infrared Induced Rotamerization of Oxalic Acid Monomer in an Argon Matrix
    Ermelinda M. S. Maçôas, Rui Fausto*, Mika Pettersson, Leonid Khriachtchev and Markku Räsänen
    J. Phys. Chem. A, 2000, 104 6956
    1999
    (1)
    Structure Elucidation and Photochemistry of Substituted Carboxylic Compounds by Low Matrix-Isolation and Solid State Vibrational Spectroscopy
    Rui Fausto, Ermelinda M. S. Maçôas and A. Kulbida
    J. Mol. Struct., 1999, 480-481, 83-99
    .

     

    Ermelinda Maçôas Last update:June 2018