| Grant number: |
13/23490-3
|
| Support type: | Scholarships in Brazil - Post-Doctorate |
| Effective date (Start): |
April 01, 2014
|
| Effective date (End): |
February 27, 2018
|
| Field of knowledge: | Physical Sciences and Mathematics
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Physics
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Condensed Matter Physics |
|
| Principal Investigator: | Hellmut Eckert |
| Grantee: | Marcos de Oliveira Junior |
|
| Home Institution: |
Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
|
|
| Associated research grant: | 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass,
AP.CEPID
|
|
| Associated scholarship(s): | 15/04063-2 - Coordination environments of rare-earth ions in photonic glasses analyzed by pulsed electron paramagnetic resonance techniques,
BE.EP.PD
|
|
Abstract
Transition Metal and rare-earth ion doped glasses and glass-ceramics are viewed as the new generation of luminescent photonic materials. Besides having superior thermal and mechanical properties than crystals, these materials can incorporate higher concentrations of doping ions and be fabricated at lower cost, in a larger variety of sizes and shapes. To optimize the luminescent properties of these materials, detailed structural information regarding the local environment of the rare-earth species is essential. While solid state nuclear magnetic resonance (NMR) is in general a promising tool for such purposes, unfortunately, the rare-earth ions themselves cannot be studied by NMR due to their paramagnetism. To overcome this difficulty, we propose to develop a comprehensive magnetic resonance strategy, comprising three complementary approaches: (i) NMR study of probe nuclei 45Sc, 89Y, 139La, 171Yb, and 175Lu, associated with diamagnetic "mimics" of the fluorescent species. (ii) analysis of the paramagnetic interactions of framework nuclei with the luminophores and (iii) examination of the magnetic dipolar interactions of the unpaired electrons with nearby nuclear spins, using electron spin echo envelope modulation (ESEEM) and electron nuclear double resonance (ENDOR) spectroscopies. This strategy will help to elucidate structural aspects of TM and RE doped glasses, such as: (i) the influence of the RE species on the structural organization of the glassy framework, (ii) the RE ion local environments, (iii) the connectivity of the RE ion species with the network former species, (iv) the overall spatial distribution of the rare-earth dopants, and (v) the structural aspects of the glass to glass ceramic transition.
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Scientific publications
(17)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MUNHOZ, JOAO F. V. L.;
SANTAGNELI, SILVIA HELENA;
DE OLIVEIRA, JR., MARCOS;
MARTINS RODRIGUES, ANA CANDIDA;
ECKERT, HELLMUT;
NALIN, MARCELO.
Glasses in the NaPO3-WO3-NaF ternary system: preparation, physical properties and structural studies.
Journal of Non-Crystalline Solids,
v. 505,
p. 379-389,
FEB 1 2019.
Web of Science Citations: 1.
BENNDORF, CHRISTOPHER;
DE OLIVEIRA, MARCOS;
DOERENKAMP, CARSTEN;
HAARMANN, FRANK;
FICKENSCHER, THOMAS;
KOESTERS, JUTTA;
ECKERT, HELLMUT;
POETTGEN, RAINER.
B-11 and Y-89 solid state MAS NMR spectroscopic investigations of the layered borides YTB4 (T = Mo, W, Re).
DALTON TRANSACTIONS,
v. 48,
n. 3,
p. 1118-1128,
JAN 21 2019.
Web of Science Citations: 0.
DE OLIVEIRA, JR., MARCOS;
OLIVEIRA, JANETE SCHULTZ;
KUNDU, SWARUP;
PEREIRA MACHADO, NORMA MARIA;
RODRIGUES, ANA CANDIDA M.;
ECKERT, HELLMUT.
Network former mixing effects in ion-conducting lithium borotellurite glasses: Structure/property correlations in the system (Li2O)(y)[2(TeO2)(x)(B2O3)(1) (- x)](1-y).
Journal of Non-Crystalline Solids,
v. 482,
p. 14-22,
FEB 15 2018.
Web of Science Citations: 1.
GALLEANI, GUSTAVO;
SANTAGNELI, SILVIA HELENA;
MESSADDEQ, YOUNES;
DE OLIVEIRA, JR., MARCOS;
ECKERT, HELLMUT.
Rare-earth doped fluoride phosphate glasses: structural foundations of their luminescence properties.
Physical Chemistry Chemical Physics,
v. 19,
n. 32,
p. 21612-21624,
AUG 28 2017.
Web of Science Citations: 10.
DIERKES, TOBIAS;
SEIDEL, STEFAN;
BENNDORF, CHRISTOPHER;
HELETTA, LUKAS;
DE OLIVEIRA JUNIOR, MARCOS;
HOLTKAMP, MICHAEL;
KARST, UWE;
BLOCK, THERESA;
JUESTEL, THOMAS;
ECKERT, HELLMUT;
POETTGEN, RAINER.
Mixed europium valence in Eu0.937Ba8[BN2](6) - Structure and spectroscopic behavior.
SOLID STATE SCIENCES,
v. 70,
p. 86-92,
AUG 2017.
Web of Science Citations: 0.
EUSTERWIEMANN, S.;
DOERENKAMP, C.;
DRESSELHAUS, T.;
JANKA, O.;
DE OLIVEIRA, JR., M.;
DANILIUC, C. G.;
ECKERT, H.;
NEUGEBAUER, J.;
POETTGEN, R.;
STUDER, A.
Strong intermolecular antiferromagnetic verdazyl-verdazyl coupling in the solid state.
Physical Chemistry Chemical Physics,
v. 19,
n. 24,
p. 15681-15685,
JUN 28 2017.
Web of Science Citations: 6.
DE OLIVEIRA, JR., MARCOS;
GONCALVES, TASSIA S.;
FERRARI, CYNTHIA;
MAGON, CLAUDIO JOSE;
PIZANI, PAULO S.;
DE CAMARGO, ANDREA S. S.;
ECKERT, HELLMUT.
Structure-Property Relations in Fluorophosphate Glasses: An Integrated Spectroscopic Strategy.
Journal of Physical Chemistry C,
v. 121,
n. 5,
p. 2968-2986,
FEB 9 2017.
Web of Science Citations: 12.
ZHANG, RUILI;
DE OLIVEIRA, MARCOS;
WANG, ZAIYANG;
FERNANDES, ROGER GOMES;
DE CAMARGO, ANDREA S. S.;
REN, JINJUN;
ZHANG, LONG;
ECKERT, HELLMUT.
Structural Studies of Fluoroborate Laser Glasses by Solid State NMR and EPR Spectroscopies.
Journal of Physical Chemistry C,
v. 121,
n. 1,
p. 741-752,
JAN 12 2017.
Web of Science Citations: 9.
DE OLIVEIRA, JR., MARCOS;
KNITSCH, ROBERT;
SAJID, MUHAMMAD;
STUTE, ANNIKA;
ELMER, LISA-MARIA;
KEHR, GERALD;
ERKER, GERHARD;
MAGON, CLAUDIO J.;
JESCHKE, GUNNAR;
ECKERT, HELLMUT.
Aminoxyl Radicals of B/P Frustrated Lewis Pairs: Refinement of the Spin-Hamiltonian Parameters by Field- and Temperature-Dependent Pulsed EPR Spectroscopy.
PLoS One,
v. 11,
n. 6
JUN 23 2016.
Web of Science Citations: 4.
DE VRIES, WILKE;
DOERENKAMP, CARSTEN;
ZENG, ZHAOYANG;
DE OLIVEIRA, JR., MARCOS;
NIEHAUS, OLIVER;
POETTGEN, RAINER;
STUDER, ARMIDO;
ECKERT, HELLMUT.
Synthesis and characterization of amorphous mesoporous silica using TEMPO-functionalized amphiphilic templates.
Journal of Solid State Chemistry,
v. 237,
p. 93-98,
MAY 2016.
Web of Science Citations: 3.
DE OLIVEIRA, JR., MARCOS;
UESBECK, TOBIAS;
GONCALVES, TASSIA S.;
MAGON, CLAUDIO JOSE;
PIZANI, PAULO S.;
DE CAMARGO, ANDREA S. S.;
ECKERT, HELLMUT.
Network Structure and Rare-Earth Ion Local Environments in Fluoride Phosphate Photonic Glasses Studied by Solid-State NMR and Electron Paramagnetic Resonance Spectroscopies.
Journal of Physical Chemistry C,
v. 119,
n. 43,
p. 24574-24587,
OCT 29 2015.
Web of Science Citations: 17.
DE OLIVEIRA, JR., MARCOS;
WIEGAND, THOMAS;
ELMER, LISA-MARIA;
SAJID, MUHAMMAD;
KEHR, GERALD;
ERKER, GERHARD;
MAGON, CLAUDIO JOSE;
ECKERT, HELLMUT.
Solid-state EPR strategies for the structural characterization of paramagnetic NO adducts of frustrated Lewis pairs (FLPs).
Journal of Chemical Physics,
v. 142,
n. 12
MAR 28 2015.
Web of Science Citations: 9.