BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1021/acs.jpcc.0c07792 http://hdl.handle.net/11449/205521 |
Resumo: | Bismuth-containing rare-earth codoped fluoride phosphate glasses are promising materials for superbroadband near-infrared (NIR) emission with potential applications in optical amplification. To elucidate their structural organization, this contribution develops a comprehensive multinuclear solid-state single and 31P/19F double resonance NMR strategy, applied to glasses in the system (BiF3)y(50NaPO3-20Ba(PO3)2-20NaF-10BaF2)100-y (y = 0, 5, 10, 20, 30, 40). To separately assess the influence of bismuth and fluorine constituents on the network structure, an additional set of (NaPO3)50-2x(Ba(PO3)2)20-x(NaF)20+2x(BaF2)10+x (x = 0, 2.5, 5.0, 7.5) glasses was also investigated. Introduction of alkali fluoride ions into phosphate glasses is shown to follow a new network modification scheme involving depolymerization of polyphosphate chains under the formation of F-bonded fluorophosphate units. However, a significant part of the fluoride stays separate, interacting exclusively with metal-ion species. 23Na MAS and 23Na{31P} double resonance NMR results are consistent with a local sodium ion environment dominated by phosphate ions in the Bi-free system, whereas in the BiF3-containing glasses, the successive reduction of the dipolar second moment M2(Na-P) with increasing BiF3 content reflects the expected dilution effect, accompanied by increasing competition of the fluoride ions for ligation with the Na+ ions. |
id |
UNSP_991f8dd1479344300ad178b4220d51e0 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/205521 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman SpectroscopiesBismuth-containing rare-earth codoped fluoride phosphate glasses are promising materials for superbroadband near-infrared (NIR) emission with potential applications in optical amplification. To elucidate their structural organization, this contribution develops a comprehensive multinuclear solid-state single and 31P/19F double resonance NMR strategy, applied to glasses in the system (BiF3)y(50NaPO3-20Ba(PO3)2-20NaF-10BaF2)100-y (y = 0, 5, 10, 20, 30, 40). To separately assess the influence of bismuth and fluorine constituents on the network structure, an additional set of (NaPO3)50-2x(Ba(PO3)2)20-x(NaF)20+2x(BaF2)10+x (x = 0, 2.5, 5.0, 7.5) glasses was also investigated. Introduction of alkali fluoride ions into phosphate glasses is shown to follow a new network modification scheme involving depolymerization of polyphosphate chains under the formation of F-bonded fluorophosphate units. However, a significant part of the fluoride stays separate, interacting exclusively with metal-ion species. 23Na MAS and 23Na{31P} double resonance NMR results are consistent with a local sodium ion environment dominated by phosphate ions in the Bi-free system, whereas in the BiF3-containing glasses, the successive reduction of the dipolar second moment M2(Na-P) with increasing BiF3 content reflects the expected dilution effect, accompanied by increasing competition of the fluoride ions for ligation with the Na+ ions.São Carlos Institute of Physics São Paulo University-USP, Avenida Trabalhador Saocarlense 400Institut für Physikalische Chemie Westfälische Wilhelms-Universität Münster, Corrensstrasse 30Institute of Chemistry São Paulo State University-UNESP, Avenida Professor Francisco Degni, 55Institute of Chemistry São Paulo State University-UNESP, Avenida Professor Francisco Degni, 55Universidade de São Paulo (USP)Westfälische Wilhelms-Universität MünsterUniversidade Estadual Paulista (Unesp)Galleani, GustavoBradtmüller, HenrikFares, Hssen [UNESP]Santagneli, Silvia Helena [UNESP]Nalin, Marcelo [UNESP]Eckert, Hellmut2021-06-25T10:16:47Z2021-06-25T10:16:47Z2020-11-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article25578-25587http://dx.doi.org/10.1021/acs.jpcc.0c07792Journal of Physical Chemistry C, v. 124, n. 46, p. 25578-25587, 2020.1932-74551932-7447http://hdl.handle.net/11449/20552110.1021/acs.jpcc.0c077922-s2.0-85096595013Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Physical Chemistry Cinfo:eu-repo/semantics/openAccess2021-10-23T14:48:14Zoai:repositorio.unesp.br:11449/205521Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:58:48.369550Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
title |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
spellingShingle |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies Galleani, Gustavo |
title_short |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
title_full |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
title_fullStr |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
title_full_unstemmed |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
title_sort |
BiF3Incorporation in Na/Ba Mixed Network Modifier Fluoride-Phosphate Glasses: Structural Studies by Solid-State NMR and Raman Spectroscopies |
author |
Galleani, Gustavo |
author_facet |
Galleani, Gustavo Bradtmüller, Henrik Fares, Hssen [UNESP] Santagneli, Silvia Helena [UNESP] Nalin, Marcelo [UNESP] Eckert, Hellmut |
author_role |
author |
author2 |
Bradtmüller, Henrik Fares, Hssen [UNESP] Santagneli, Silvia Helena [UNESP] Nalin, Marcelo [UNESP] Eckert, Hellmut |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Westfälische Wilhelms-Universität Münster Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Galleani, Gustavo Bradtmüller, Henrik Fares, Hssen [UNESP] Santagneli, Silvia Helena [UNESP] Nalin, Marcelo [UNESP] Eckert, Hellmut |
description |
Bismuth-containing rare-earth codoped fluoride phosphate glasses are promising materials for superbroadband near-infrared (NIR) emission with potential applications in optical amplification. To elucidate their structural organization, this contribution develops a comprehensive multinuclear solid-state single and 31P/19F double resonance NMR strategy, applied to glasses in the system (BiF3)y(50NaPO3-20Ba(PO3)2-20NaF-10BaF2)100-y (y = 0, 5, 10, 20, 30, 40). To separately assess the influence of bismuth and fluorine constituents on the network structure, an additional set of (NaPO3)50-2x(Ba(PO3)2)20-x(NaF)20+2x(BaF2)10+x (x = 0, 2.5, 5.0, 7.5) glasses was also investigated. Introduction of alkali fluoride ions into phosphate glasses is shown to follow a new network modification scheme involving depolymerization of polyphosphate chains under the formation of F-bonded fluorophosphate units. However, a significant part of the fluoride stays separate, interacting exclusively with metal-ion species. 23Na MAS and 23Na{31P} double resonance NMR results are consistent with a local sodium ion environment dominated by phosphate ions in the Bi-free system, whereas in the BiF3-containing glasses, the successive reduction of the dipolar second moment M2(Na-P) with increasing BiF3 content reflects the expected dilution effect, accompanied by increasing competition of the fluoride ions for ligation with the Na+ ions. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-19 2021-06-25T10:16:47Z 2021-06-25T10:16:47Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1021/acs.jpcc.0c07792 Journal of Physical Chemistry C, v. 124, n. 46, p. 25578-25587, 2020. 1932-7455 1932-7447 http://hdl.handle.net/11449/205521 10.1021/acs.jpcc.0c07792 2-s2.0-85096595013 |
url |
http://dx.doi.org/10.1021/acs.jpcc.0c07792 http://hdl.handle.net/11449/205521 |
identifier_str_mv |
Journal of Physical Chemistry C, v. 124, n. 46, p. 25578-25587, 2020. 1932-7455 1932-7447 10.1021/acs.jpcc.0c07792 2-s2.0-85096595013 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Physical Chemistry C |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
25578-25587 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128299427168256 |