Maria Claudia França da Cunha Felinto

@ipen.br

Professor Dr / Comissão Nacional de Energia Nuclear
Instituto de Pesquisas Energéticas e Nucleares



                 

https://researchid.co/neves2019
13

Scopus Publications

610

Scholar Citations

5

Scholar h-index

10

Scholar i10-index

Scopus Publications

  • Luminescence in Ln<sup>3+</sup> dipivaloylmethanate complexes: Spectroscopic and theoretical investigation on the energy transfer and LMCT state
    Joaldo G. Arruda, Iran F. Silva, Wagner M. Faustino, Israel F. Costa, Hermi F. Brito, Albano N. Carneiro Neto, Christian Näther, Huayna Terraschke, Maria Cláudia F.C. Felinto, Victor M. Deflon,et al.
    Elsevier BV

  • High red luminescence intensity under sunlight exposure of a PMMA polymer doped with a tetrakis Eu<sup>3+</sup> β-diketonate complex containing a benzimidazolium counterion
    Israel P. Assunção, Israel F. Costa, Lucca Blois, Maria Claudia F. C. Felinto, Victor M. Deflon, Rômulo A. Ando, Oscar L. Malta, and Hermi F. Brito
    Royal Society of Chemistry (RSC)
    New tetrakis Eu3+ and Gd3+ β-diketonate complexes containing benzimidazolium (Bzim) as the counterion were synthesized by the one-pot method and successfully doped into a PMMA matrix at different concentrations.

  • Luminescence under UV(A, B and C) and sunlight exposure of tetrakis Tb<sup>3+</sup> carboxylate complexes doped in different polymers
    Israel P. Assunção, Lucca Blois, Flora P. Cauli, Maria Claudia F.C. Felinto, Oscar L. Malta, and Hermi F. Brito
    Elsevier BV


  • Luminescence properties of lanthanide tetrakis complexes as molecular light emitters
    Israel F. Costa, Lucca Blois, Tiago B. Paolini, Israel P. Assunção, Ercules E.S. Teotonio, Maria Claudia F.C. Felinto, Renaldo T. Moura Jr., Ricardo L. Longo, Wagner M. Faustino, Luís D. Carlos,et al.
    Elsevier BV

  • Shedding Light on Eu(III) β-Diketonate Compounds with 1,2-Bis(diphenylphosphino)ethane Oxide Ligand: an Optical Study
    Paulo R. S. Santos, Ashley A. S. S. Jesus, William B. Lima, Joaldo G. Arruda, Wagner M. Faustino, Maria C. F. C. Felinto, José R. Sabino, Hermi F. Brito, Israel F. Costa, Renaldo T. Moura,et al.
    Wiley
    AbstractA series of novel lanthanide β‐diketonate coordination compounds containing the ancillary ligand bis(diphenylphosphino) oxide (dppeO2) have been synthesized, characterized, and studied spectroscopically. The compounds of formulas Ln(β‐dik)3(dppeO2), where Ln: Eu and Gd and β‐dik ligands as tta (Ln‐1), btf (Ln‐2), bzac (Ln‐5) and tfac (Ln‐4), and Ln2(β‐dik)6(dppeO2) with ligand dbm (Ln‐3) and fod (Ln‐6). Their photophysical properties were investigated from the Judd‐Ofelt intensity parameters ( ), radiative ( ) and non‐radiative ( ) rates, intrinsic ( ) and overall ( ) quantum yields, and CIE (x,y) color coordinates. The Eu‐5 and Eu‐6 compounds have the first excited triplet states T1 (around 18802 and 18976 cm−1, respectively) almost resonant with the Eu3+ 5D0 emission level, whereas the complexes Eu‐1, Eu‐2, Eu‐3, and Eu‐4 exhibited higher T1 energies. The values were predominantly driven by the intensity parameter , suggesting more pronounced angular changes in the first coordination sphere of the Eu3+ ion. The values also exhibited significant changes with the β‐diketonate ligands. Eu‐1 showed the highest value of (60 %), indicating a more efficient intramolecular energy transfer process. On the other hand, Eu‐5 and Eu‐6 compounds showed values equal to 18.7 % and 16.5 %, respectively, which indicates the presence of luminescence quencher channels.

  • The influence of imidazolium counterions on the luminescence properties of C<inf>n</inf>mim[Eu(tta)<inf>4</inf>] tetrakis complexes in solid-state and ionic liquid solutions
    Tiago B. Paolini, Israel P. Assunção, Israel F. Costa, Lucca Blois, Maria Cláudia F.C. Felinto, Renaldo T. Moura Jr., Ercules E.S. Teotonio, Oscar L. Malta, Albano N. Carneiro Neto, and Hermi F. Brito
    Elsevier BV

  • Luminescence properties of BaMO<inf>4</inf>:Eu<sup>3+</sup> (M: Mo or W) phosphors derived from co-precipitation reaction
    Renan P. Moreira, Leonardo H.C. Francisco, Israel F. Costa, Helliomar P. Barbosa, Ercules E.S. Teotonio, Maria C.F.C. Felinto, Oscar L. Malta, and Hermi F. Brito
    Elsevier BV


  • Luminescent Analysis of Eu<sup>3+</sup>and Tb<sup>3+</sup>Flufenamate Complexes Doped in PMMA Polymer: Unexpected Terbium Green Emission under Sunlight Exposure
    Israel P. Assunção, Israel F. Costa, Paulo R. S. Santos, Ercules E. S. Teotonio, Maria Claudia F. C. Felinto, Ulrich Kynast, Wagner M. Faustino, Oscar Malta, and Hermi F. Brito
    American Chemical Society (ACS)

  • Wide visible-range activatable fluorescence ZnSe:Eu<sup>3+</sup>/Mn<sup>2+</sup>@ZnS quantum dots: Local atomic structure order and application as a nanoprobe for bioimaging
    Zahid Ullah Khan, Mayara Klimuk Uchiyama, Latif Ullah Khan, Koiti Araki, Hiro Goto, Maria Claudia França Cunha Felinto, Ana Olivia de Souza, Hermi Felinto de Brito, and Magnus Gidlund
    Royal Society of Chemistry (RSC)
    To develop fluorescent bionanoprobe for cellular imaging, it is crucial to get precise insight on the particle–cell interaction, optical properties of QDs in and out of the cell, their movement in and out of the cell, and the final fate of particle.

  • SrAl<inf>2</inf>O<inf>4</inf>: Eu<sup>2+</sup>, Dy<sup>3+</sup> persistent luminescent materials functionalized with the Eu<sup>3+</sup>(TTA)-complex by microwave-assisted method
    Leonardo H.C. Francisco, Renan P. Moreira, Maria C.F.C. Felinto, Veronica C. Teixeira, Hermi F. Brito, and Oscar L. Malta
    Elsevier BV
    Abstract Recently, several classes of rare-earth-doped luminescent materials have been drawing attention due to structurally engineered energy converting systems, capable of tuning absorption and emission spectral ranges, outlining new materials and applications in photonics. In this scenario, this work presents the development of SrAl2O4:Eu2+,Dy3+ phosphors prepared by the Pechini method, which were further APTMS-functionalized (3-aminopropyltrimethoxysilane) by microwave-assisted synthesis, incorporating a Eu3+ β-diketonate complex embedded within a SiO2-R network to increase light absorption and promote energy transfer processes. Powder X-ray diffraction data revealed a stable characteristic monoclinic phase of the SrAl2O4 host matrix, which undergoes structural changes after functionalization. Particle morphology and elemental distribution were probed by scanning electron microscopy technique, exhibiting surface alteration effects. Photoluminescence spectra displayed a characteristic broad green emission band assigned to the 4f65d1(2D) → 4f7(8S7/2) interconfigurational transition of the Eu2+ ion. Functionalized materials presented absorption shifts coupled with an emission band intensification suggesting effective interactions between the β-diketonate complex, the SiO2-R network, and the inorganic host matrix. Increased absorption range and persistence decay time under near band gap excitation on modified materials were also observed.

  • JOYSpectra: A web platform for luminescence of lanthanides
    Renaldo T. Moura Jr., Albano N. Carneiro Neto, Eduardo C. Aguiar, Carlos V. Santos-Jr., Ewerton M. de Lima, Wagner M. Faustino, Ercules E.S. Teotonio, Hermi F. Brito, Maria C.F.C. Felinto, Rute A.S. Ferreira,et al.
    Elsevier BV

  • Microwave-assisted preparation of luminescent inorganic materials: A fast route to light conversion and storage phosphors
    José Miranda de Carvalho, Cássio Cardoso Santos Pedroso, Matheus Salgado de Nichile Saula, Maria Claudia França Cunha Felinto, and Hermi Felinto de Brito
    MDPI AG
    Luminescent inorganic materials are used in several technological applications such as light-emitting displays, white LEDs for illumination, bioimaging, and photodynamic therapy. Usually, inorganic phosphors (e.g., complex oxides, silicates) need high temperatures and, in some cases, specific atmospheres to be formed or to obtain a homogeneous composition. Low ionic diffusion and high melting points of the precursors lead to long processing times in these solid-state syntheses with a cost in energy consumption when conventional heating methods are applied. Microwave-assisted synthesis relies on selective, volumetric heating attributed to the electromagnetic radiation interaction with the matter. The microwave heating allows for rapid heating rates and small temperature gradients yielding homogeneous, well-formed materials swiftly. Luminescent inorganic materials can benefit significantly from the microwave-assisted synthesis for high homogeneity, diverse morphology, and rapid screening of different compositions. The rapid screening allows for fast material investigation, whereas the benefits of enhanced homogeneity include improvement in the optical properties such as quantum yields and storage capacity.

  • Synthesis, Structure Study, First-Principles Investigations and Luminescence Properties of Europium and Terbium Complexes
    Bakhat Ali, Helio A. Stefani, Muhammad Imran, Ahmad Irfan, Mohammed A. Assiri, Maria Claudia F. C. Felinto, Muhammad Khalid, and Abdullah G. Al-Sehemi
    Springer Science and Business Media LLC
    The synthesis of 1-benzyl-2-((2-Aminoethyl) amino)-5-oxopyrrolidine-3,4-diyl diacetate (boad), an oxopyrrolidine type ligand; designed to coordinate lanthanides (Eu3+ and Tb3+) to get luminescent material. The target complexes showed good photoluminescence properties, which indicate that this type of compound can be used as sensitizers having luminescence for the green (Tb3+) and red (Eu3+) emission. The obtained results revealed that sensitizer efficiency can be improved by adding ligands like acac (Eu(acac)3, which has also enhanced the luminescence quantum output and period for Eu3+ ions. The ground state geometries were developed by using density functional theory at B3LYP/6-31G** level. The charge transfer analysis and electronic properties were performed. The Europium and Terbium complexes formation with boad ligand was explored based on molecular electrostatic potential, MDC-q charges, and frontier molecular orbitals (FMOs) analysis.

  • Luminescence properties of the Ln–EDTA complexes covalently linked to the chitosan biopolymers containing β-diketonate as antenna ligands
    Israel F. Costa, Gilvan P. Pires, José Geraldo P. Espínola, Hermi F. Brito, Maria Claudia F.C. Felinto, Wagner M. Faustino, and Ercules E.S. Teotonio
    Wiley
    This paper reports on the preparation, characterization, and photoluminescence properties of novel hybrid materials, in which the EDTA-Ln-L complexes (where L: H2 O, acac, bzac, dbm, and tta ligands, and Ln: Eu, Gd, and Tb) were covalently linked to the precursor medium molecular weight chitosan surface (CS) matrices or on the chitosan surfaces previously crosslinked with epichlorohydrin (CSech). The emission spectra of these materials were characterized by intraconfigurational-4fN transitions centred on the Eu3+ and Tb3+ ions. Some broad bands from the polymeric matrix were also observed in the emission spectra, however the relative intensities of the intraconfigurational bands increased significantly for systems containing diketonate ligands when the antenna effect became more efficient. The values of the radiative rates (Arad ) were higher for crosslinked hybrid systems with epichlorohydrin, while nonradiative rates (Anrad ) presented the opposite behaviour. These data contributed to an increase in the values of emission quantum efficiency (η) for crosslinked materials. The effect of the modification process and antenna ligand on the values of intensities, intensity parameters Ω2 e Ω4 of the Eu3+ complexes were also investigated. The results showed that the crosslinked biopolymer surfaces have great potential for applications in molecular devices light converters.

  • Highly sensitive and precise optical temperature sensors based on new luminescent Tb<sup>3+</sup>/Eu<inf>3+</inf>tetrakis complexes with imidazolic counterions
    Lucca B. Guimarães, Alexandre M. P. Botas, Maria C. F. C. Felinto, Rute A. S. Ferreira, Luis D. Carlos, Oscar L. Malta, and Hermi F. Brito
    Royal Society of Chemistry (RSC)
    Precise optical temperature sensors based on luminescent Tb3+:Eu3+ tetrakis complexes with imidazolic counterions with high emission quantum yield values and low temperature uncertainty.

  • Blue-emitting MWO<inf>4</inf>:Tm<sup>3+</sup> (M: Sr, Ba) phosphors prepared by coprecipitation method at room temperature
    Edson Gaiollo, Renan Moreira, Maria Felinto, Helliomar Barbosa, Cássio Pedroso, Ercules Teotonio, Oscar Malta, and Hermi Brito
    Sociedade Brasileira de Quimica (SBQ)

  • Development of highly luminescent PMMA films doped with Eu<sup>3+</sup>β-diketonate coordinated on ancillary ligand
    L. H. C. Francisco, M. C. F. C. Felinto, H. F. Brito, E. E. S. Teotonio, and O. L. Malta
    Springer Science and Business Media LLC
    In this work, [Eu(tta)3(4-picNO)2] and [Eu(dbm)3(4-picNO)] complexes were incorporated on different concentrations (x = 1, 3, 5, 10 and 15%) in PMMA polymeric matrix (4-picNO: 4-Methylpyridine N-oxide) by the solvent casting method, yielding transparent and highly luminescent polymeric films. These materials were analyzed by X-ray diffraction, scanning electron microscopy and by energy dispersive, ultraviolet–visible spectroscopy, luminescence and vacuum ultraviolet–ultraviolet spectroscopies. The luminescence spectra of doped PMMA films are in agreement with an efficient intramolecular diketonate (tta) ligand-to-europium energy transfer. Furthermore, the values of experimental intensity parameters (Ω2,4) for luminescent polymeric materials were quite similar to those ones for isolated complexes, indicating that there is a homogeneous dispersion of Eu3+ complexes in the polymeric matrix, preserving their chemical and structural features. These behavior were also observed from the CIE diagram that show great similarity between the (x,y) coordinates for the doped PMMA samples compared to the isolated β-diketonate complexes with a reddish color tuning. The photostability investigation of the doped PMMA polymeric films and Eu3+ complexes has been also reported.

  • Odd-Even Effect on Luminescence Properties of Europium Aliphatic Dicarboxylate Complexes
    Israel P. Assunção, Albano N. Carneiro Neto, Renaldo T. Moura, Cássio C. S. Pedroso, Ivan G. N. Silva, Maria C. F. C. Felinto, Ercules E. S. Teotonio, Oscar L. Malta, and Hermi F. Brito
    Wiley
    The odd-even effect in luminescent [Eu₂(L)₃(H₂O)x]•y(H2O) complexes with aliphatic dicarboxylate ligands (L: OXA, MAL, SUC, GLU, ADP, PIM, SUB, AZL, SEB, UND, and DOD, where x = 2-6 and y = 0-4), prepared by the precipitation method, was observed for the first time in lanthanide compounds. The final dehydration temperatures of the Eu³+ complexes show a zigzag pattern as a function of the carbon chain size of the dicarboxylate ligands, leading to the so-called odd-even effect. The FTIR data confirmed the ligand-metal coordination via the mixed mode of bridge-chelate coordination, except for the Eu³+-oxalate complex. XRD results point out to highly crystalline materials belonging to the monoclinic system. The odd-even effect on the 4f-4f luminescence intensity parameters (Ω₂ and Ω₄) was explained by using an extension of the Dynamic Coupling mechanism, herein named the Ghost-Atom model. In this method, the long-range polarizabilities (α*) were simulated by a Ghost-Atom located at the middle of each ligand chain. The values of α* were estimated using the localized molecular orbital approach. The emission intrinsic quantum yield (Q_Ln^Ln) of the Eu³+ complexes also presented an the odd-even effect, successfully explained in terms of the zigzag behavior showed by the Ω₂ and Ω₄ intensity parameters. Luminescence quenching due to water molecules in the first coordination sphere was discussed and rationalized.

  • Investigation on the formation of highly luminescent β-diketone-Ln(III)-EDTA water-soluble complexes
    Haryane R.M. Silva, Wagner M. Faustino, Ercules E.S. Teotonio, Hermi F. Brito, Oscar L. Malta, and Maria Cláudia F.C. Felinto
    Elsevier BV
    Abstract Three new β-diketone–Ln-EDTA (β-diketone = TTA, BTFA, ACAC; Ln=Eu3+ and Tb3+) water-soluble complexes were prepared, and their photophysical properties were investigated in aqueous solutions and compared with the Eu–EDTA complex. A very strong red and green luminescence was observed by the addition of ligands to the aqueous solutions of the Eu–EDTA and Tb–EDTA complexes, respectively, due to the formation of water-soluble β-diketone–Ln–EDTA complexes. To confirm the formation and stoichiometry of the new β-diketone–Ln–EDTA complex, the Judd–Ofelt intensity parameters Ω2 for Eu3+ complexes and the band width at half height (Δλ) for Tb3+ complexes were used. The dependence of these parameters on the addition of the β-diketone strongly suggests that only one β-diketonate ligand is in the first coordination sphere of the β-diketone–Ln–EDTA complexes. These new Eu3+ and Tb3+ systems may act as red and green optical markers for bioassay or bioimaging.

  • Modeling intramolecular energy transfer in lanthanide chelates: A critical review and recent advances
    Albano N. Carneiro Neto, Ercules E.S. Teotonio, Gilberto F. de Sá, Hermi F. Brito, Janina Legendziewicz, Luís D. Carlos, Maria Claudia F.C. Felinto, Paula Gawryszewska, Renaldo T. Moura, Ricardo L. Longo,et al.
    Elsevier
    Abstract A critical review on the mechanisms and behavior of 4f intraconfigurational transitions in controllable chemical environments related to nonradiative intramolecular energy transfer processes in lanthanide chelates is presented. The term “modeling” is here used in the sense of manipulating and controlling the photophysical properties of these compounds, allowing obtaining distinguished and specific luminescent behavior. In this chapter an effort is made to show that a theoretical model, jointly used with experimental available data, is able to provide this modeling process in a comprehensive and useful way. The model allows estimating quantitatively intramolecular energy transfer rates by several mechanisms. Selection rules and the spectral overlap factor (energy mismatch conditions, for which an analytical expression is available) may be used to define relevant energy transfer pathways, and the solution (analytically or numerically) of appropriate systems of rate equations is crucial to deduce dominant pathways. Emission quantum yields, then, can be estimated and rationalized. In these rate equations all possible transition channels (radiative and non-radiative) must be included; some of them may be taken into account through the level decaying lifetime. Attempts to standardize notation is made, and some misinterpretations, perspectives and challenges on this subject are discussed.

  • Tuning Emitting Color of Electroluminescent Devices Containing Tris(2‑acyl‑1,3‑indandionate)aluminum(III) Complexes as Emitting Layers
    Israel Costa, Jandeilson Moura, Rian Aderne, Harold Avila, Marco Cremona, Hermi Brito, Maria Cláudia Felinto, Wagner Faustino, and Ercules Teotonio
    Sociedade Brasileira de Quimica (SBQ)
    In this study, a novel type of tris(2-acyl-1,3-indandione)-aluminum(III) coordination compounds of the general formula [Al(acind)3]H2O, where 2-acyl-1,3-indandione (acind), 2-acetyl1,3-indandione (aind), 2-benzoyl-1,3-indandione (bind), and 4-methyl-2-benzoyl-1,3-indandione (mbind), were synthesized and characterized by elemental analysis (CHN), Fourier transform infrared (FTIR) and nuclear magnetic resonance (H NMR) spectroscopies, thermal analysis (TG/DTG and DTA), and optical absorption spectroscopy in the UV-Vis region. These compounds present remarkably high green luminescence in powder and in thin-film forms. However, when these compounds are applied in glass/ITO/β-NPB/spiro-2CBP/[Al(acind)3]/Al and glass/ITO/β-NPB/ [Al(acind)3]/LiF/Al electroluminescent devices, where spiro-2CBP is 2,7-bis(carbazol-9-yl)-9,9spirobifluorene and β-NPB is N,N’-bis(naphthalen-2-yl)-N,N’-bis(phenyl)-benzidine, the emission color tuned from green to red, reflecting a change from the direct charge recombination in the emitting layer of the [Al(acind)3] complexes to an exciplex-based emission in which [Al(acind)3] complexes and spiro 2-CBP acted as acceptor and donor, respectively. These results suggest that [Al(acind)3] complexes have potential applications as molecular light converter materials for fabricating new electroluminescent devices.

  • Persistent luminescence of inorganic nanophosphors prepared by wet-chemical synthesis
    Everton Bonturim, Leonnam Gotardo Merízio, Roberto dos Reis, Hermi Felinto Brito, Lucas Carvalho Veloso Rodrigues, and Maria Claudia França Cunha Felinto
    Elsevier BV
    Abstract The synthesis of efficient nanosized persistent luminescence materials remains a challenge for the community. Paradoxically, due to the dependence of the point lattice defects and the persistent luminescence efficiency, the control of the defect formation, favorable when the materials are prepared at high temperatures, normally leads to particle growth and sintering. In this work, efficient nanosized rare earth doped disilicates Sr2MgSi2O7:Eu2+,Dy3+ were synthesized via three different wet-chemical methods taking advantages of the microwave-assisted reduction process as a support step to produce high-quality polycrystalline materials. The crystallite size of the sample showed to be smaller when the decomposition temperature of the precursors is higher and close to the phase formation energy. The excitation VUV spectroscopy indicated that despite being nanocrystalline, the materials optical band gap has just a small difference compared one to another. The reduction of Eu3+ to Eu2+ was successfully obtained, since the f-d interconfigurational transitions of Eu2+ 4f65d1→4f7 emission were observed in the blue region of the spectra. The persistent luminescence efficiency measured through its lasting decay time was close to the commercial materials references and with the advantage of having size control during the synthesis method that can lead to the size dependent applications of photonic materials.

  • Red-emitting magnetic nanocomposites assembled from ag-decorated Fe<inf>3</inf>O<inf>4</inf>@sio<inf>2</inf> and Y<inf>2</inf>O<inf>3</inf>:Eu<sup>3+</sup>: Impact of iron-oxide/silver nanoparticles on Eu<sup>3+</sup> emission
    Latif U. Khan, Luis F. M. Zambon, Jacinete L. Santos, Rodrigo V. Rodrigues, Luelc S. Costa, Diego Muraca, Kleber R. Pirota, Maria C. F. C. Felinto, Oscar L. Malta, and Hermi F. Brito
    Wiley

RECENT SCHOLAR PUBLICATIONS

  • Luminescence in Ln3+ dipivaloylmethanate complexes: Spectroscopic and theoretical investigation on the energy transfer and LMCT state
    JG Arruda, IF Silva, WM Faustino, IF Costa, HF Brito, ANC Neto, C Nther, ...
    Polyhedron 267, 117313 2025

  • High red luminescence intensity under sunlight exposure of a PMMA polymer doped with a tetrakis Eu 3+ β-diketonate complex containing a benzimidazolium counterion
    IP Assuno, IF Costa, L Blois, MCFC Felinto, VM Deflon, RA Ando, ...
    RSC advances 15 (1), 435-445 2025

  • Luminescence under UV (A, B and C) and sunlight exposure of tetrakis Tb3+ carboxylate complexes doped in different polymers
    IP Assuno, L Blois, FP Cauli, MCFC Felinto, OL Malta, HF Brito
    Journal of Alloys and Compounds 1002, 175319 2024

  • A new strategy to prepare high luminescent films containing polypropylene and polyamide doped with Eu3+ β-diketonate complex
    DF Parra, LG Marchini, MCFC Felinto, HF Brito
    Optical Materials 152, 115396 2024

  • Luminescence properties of lanthanide tetrakis complexes as molecular light emitters
    IF Costa, L Blois, TB Paolini, IP Assuno, EES Teotonio, MCFC Felinto, ...
    Coordination Chemistry Reviews 502, 215590 2024

  • Shedding Light on Eu (III) β‐Diketonate Compounds with 1, 2‐Bis (diphenylphosphino) ethane Oxide Ligand: an Optical Study
    PRS Santos, AASS Jesus, WB Lima, JG Arruda, WM Faustino, ...
    European Journal of Inorganic Chemistry 27 (4), e202300660 2024

  • Luminescence in Ln3+ dipivaloylmethanate complexes: Spectroscopic and theoretical investigation on the energy transfer and LMCT state
    JG Arruda, IF Silva, WM Faustino, IF Costa, HF Brito, ANC Neto, C Nather, ...
    Polyhedron 267, 12 2024

  • Luminescent properties of the polymethyl methacrylate (PMMA) nanoparticles doped with Eu3+-tta-TOPO complex, functionalized with 1, 6 diaminehexane and recognition of β-estradiol
    MCFC Felinto, HF Brito, DC Salum, IP Assuno, LB Guimares, ...
    Proceedings 2024

  • Bright red luminescence under sunlight of PMMA polymers doped with tetrakis Eu3+ β-diketonate complex containing benzimidazolium counterion
    IP Assuno, IF Costa, LB Guimares, MCFC Felinto, OML Malta, HF Brito
    Proceedings 2024

  • Europium complexes as luminescent sensitizers in near-infrared persistent phosphors
    LHC Francisco, RP Moreira, MCFC Felinto, OML Malta, HF Brito
    Proceedings 2024

  • Practical applications of versatile highly luminescent beta-diketonate tetrakisTb3+/Eu3+ complex doped in polymeric matrices as light-converting molecular devices and optical
    IP Assuno, MCFC Felinto, OL Malta, HF Brito, JH Araujo Neto
    Abstracts Book 2024

  • Bright Luminescence in Tb3+-Doped BaMO4 (M: W, Mo) nanophosphors Prepared by Coprecipitation Method
    RP Moreira, LHC Francisco, HF Brito, HP Barbosa, OL Malta, ...
    Proceedings 2024

  • Investigation of site-selective luminescence on core-shell persistent phosphors using synchrotron radiation
    LHC Francisco, RP Moreira, HF Brito, OML Malta, MCFC Felinto
    Proceedings 2024

  • Novel lanthanide complexes as platform for ligand to metal charge transfer of low energies
    AAS Jesus, AL Gouveia, PRS Santos, JG Arruda, IF Costa, WM Faustino, ...
    Anais 2024

  • Novel di-and polynuclear lanthanide ion compounds containing 2-acyl-1, 3-indandionate ligands as luminescence sensitizers
    AL Gouveia, AASS de JESUS, EES Teotonio, JG Arruda, PRS Santos, ...
    Aptor Software 2024

  • The influence of imidazolium counterions on the luminescence properties of Cnmim [Eu (tta) 4] tetrakis complexes in solid-state and ionic liquid solutions
    TB Paolini, IP Assuno, IF Costa, L Blois, MCFC Felinto, RT Moura Jr, ...
    Journal of Luminescence 263, 120158 2023

  • Luminescence properties of BaMO4: Eu3+ (M: Mo or W) phosphors derived from co-precipitation reaction
    RP Moreira, LHC Francisco, IF Costa, HP Barbosa, EES Teotonio, ...
    Journal of Alloys and Compounds 937, 168408 2023

  • Luminescence properties of lanthanide tetrakis complexes as molecular light emitters
    IF Costa, L Blois, TB Paolini, IP Assunca, EES Teotonio, MCFC Felinto, ...
    Coordination Chemistry Reviews 502, 46 2023

  • Structural and photoluminescent properties of novel lanthanide dipivaloymethanate complexes: A platform for investigation of LMCT transitions
    PRS Santos, AAS Jesus, WB Lima, WM Faustino, IF Costa, LB Guimares, ...
    Anais 2023

  • Optimization of Eu3+-doped Li2ZnSn3O8 stannate materials prepared via Solidstate methods for sensitive thermometry applications
    MSN Saula, IF Costa, MCFC Felinto, LAO Nunes, OML Malta, HF Brito
    Anais 2023

MOST CITED SCHOLAR PUBLICATIONS

  • Luminescence investigation of Eu3+ ion in the RE2 (WO4) 3 matrix (RE= La and Gd) produced using the Pechini method
    CA Kodaira, HF Brito, MCFC Felinto
    Journal of Solid State Chemistry 171 (1-2), 401-407 2003
    Citations: 282

  • Intermolecular energy transfer and photostability of luminescence-tuneable multicolour PMMA films doped with lanthanide–β-diketonate complexes
    J Kai, MCFC Felinto, LAO Nunes, OL Malta, HF Brito
    Journal of Materials Chemistry 21 (11), 3796-3802 2011
    Citations: 227

  • Highly-sensitive Eu 3+ ratiometric thermometers based on excited state absorption with predictable calibration
    AS Souza, LAO Nunes, IGN Silva, FAM Oliveira, LL da Luz, HF Brito, ...
    Nanoscale 8 (9), 5327-5333 2016
    Citations: 178

  • A lead-selective extraction chromatographic resin and its application to the isolation of lead from geological samples
    EP Horwitz, ML Dietz, S Rhoads, C Felinto, NH Gale, J Houghton
    Analytica Chimica Acta 292 (3), 263-273 1994
    Citations: 171

  • Discovery of the Persistent Luminescence Mechanism of CdSiO3:Tb3+
    LCV Rodrigues, HF Brito, J Holsa, R Stefani, MCFC Felinto, M Lastusaari, ...
    The Journal of Physical Chemistry C 116 (20), 11232-11240 2012
    Citations: 158

  • Luminescence investigation of the Sm (III)-β-diketonates with sulfoxides, phosphine oxides and amides ligands
    HF Brito, OL Malta, MCFC Felinto, EES Teotonio, JFS Menezes, ...
    Journal of alloys and compounds 344 (1-2), 293-297 2002
    Citations: 137

  • Synthesis and spectroscopic behavior of highly luminescent Eu3+–dibenzoylmethanate (DBM) complexes with sulfoxide ligands
    E Niyama, HF Brito, M Cremona, EES Teotonio, R Reyes, GES Brito, ...
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 61 (11 2005
    Citations: 128

  • Evaluation of intramolecular energy transfer process in the lanthanide (III) bis-and tris-(TTA) complexes: Photoluminescent and triboluminescent behavior
    EES Teotonio, GM Fett, HF Brito, WM Faustino, GF de S, MCFC Felinto, ...
    Journal of Luminescence 128 (2), 190-198 2008
    Citations: 124

  • Modeling intramolecular energy transfer in lanthanide chelates: A critical review and recent advances
    ANC Neto, EES Teotonio, GF de S, HF Brito, J Legendziewicz, ...
    Handbook on the physics and chemistry of rare earths 56, 55-162 2019
    Citations: 120

  • Luminescence phenomena involving metal enolates
    H Felinto Brito, O Manoel Loureiro Malta, ...
    PATAI'S chemistry of functional groups 2009
    Citations: 116

  • Optical properties of red, green and blue emitting rare earth benzenetricarboxylate compounds
    ER Souza, IGN Silva, EES Teotonio, MCFC Felinto, HF Brito
    Journal of luminescence 130 (2), 283-291 2010
    Citations: 104

  • Optical investigation of Y2O3: Sm3+ nanophosphor prepared by combustion and Pechini methods
    CA Kodaira, R Stefani, AS Maia, MCFC Felinto, HF Brito
    Journal of Luminescence 127 (2), 616-622 2007
    Citations: 104

  • Persistent luminescence of Eu2+ and Dy3+ doped barium aluminate (BaAl2O4: Eu2+, Dy3+) materials
    R Stefani, LCV Rodrigues, CAA Carvalho, MCFC Felinto, HF Brito, ...
    Optical materials 31 (12), 1815-1818 2009
    Citations: 103

  • Synthesis, crystalline structure and photoluminescence investigations of the new trivalent rare earth complexes (Sm3+, Eu3+ and Tb3+) containing 2-thiophenecarboxylate as
    EES Teotonio, MCFC Felinto, HF Brito, OL Malta, AC Trindade, R Najjar, ...
    Inorganica Chimica Acta 357 (2), 451-460 2004
    Citations: 103

  • Photoluminescent behavior of SrB4O7: RE2+ (RE= Sm and Eu) prepared by Pechini, combustion and ceramic methods
    R Stefani, AD Maia, EES Teotonio, MAF Monteiro, MCFC Felinto, HF Brito
    Journal of Solid State Chemistry 179 (4), 1086-1092 2006
    Citations: 101

  • Luminescent nanoparticles of MgAl2O4: Eu, Dy prepared by citrate sol–gel method
    AS Maia, R Stefani, CA Kodaira, MCFC Felinto, EES Teotonio, HF Brito
    Optical Materials 31 (2), 440-444 2008
    Citations: 94

  • Influence of titanium and lutetium on the persistent luminescence of ZrO2
    JM Carvalho, LCV Rodrigues, J Hls, M Lastusaari, LAO Nunes, ...
    Optical Materials Express 2 (3), 331-340 2012
    Citations: 81

  • Defect to R 3+ energy transfer: colour tuning of persistent luminescence in CdSiO 3
    LCV Rodrigues, J Hls, M Lastusaari, MCFC Felinto, HF Brito
    Journal of Materials Chemistry C 2 (9), 1612-1618 2014
    Citations: 80

  • Synthesis and performance of organic-coated magnetite particles
    M Yamaura, RL Camilo, M Felinto
    Journal of alloys and compounds 344 (1-2), 152-156 2002
    Citations: 79

  • Triboluminescence
    DO Olawale, JM Uddin, J Yan, TJ Dickens, OOI Okoli
    Springer 2016
    Citations: 77