Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2024 |
| Outros Autores: | , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
| Texto Completo: | http://hdl.handle.net/10362/167743 |
Resumo: | Funding Information: This work was supported by the Associate Laboratory for Green Chemistry LAQV ( UID/QUI/50006/2019 ), i3N (UID/ CTM / 50025/2019 ) and CeFEMA (UID/ CTM / 04540/2019 ), which are financed by national funds from FCT- MCTES and by FEDER funds through the COMPETE 2020 Program. The authors also thank the National Funds through FCT- MCTES and POR Lisboa 2020, under the project numbers PTDC/EAM - AMB / 2023/2021 ( SUSTECH4H2O ), POCI-01-0145-FEDER-007688 and European Interdisciplinary Action ( COST Action CA21159 , PhoBioS). A. F. M. Santos also acknowledges FCT- MCTES for the PhD Grant ( SFRH/BD/132551/2017 ) and I. Matos for the contract CEECIND/004431/2022 . Funding Information: This work was supported by the Associate Laboratory for Green Chemistry LAQV, Portugal, (LA/P/0008/2020, UIDB/50006/2020, UIDP/50006/2020), i3N, Portugal, (LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020), CQE, Portugal, (UIDB/00100/2020, UIDP/00100/2020) and CeFEMA, Portugal, (UIDB/04540/2020, UIDP/04540/2020), which are financed by national funds from FCT-MCTES, Portugal, and by FEDER funds through the COMPETE 2020, Portugal, Program. The authors also thank the National Funds through FCT-MCTES, Portugal and POR Lisboa 2020, under the project numbers PTDC/EAM-AMB/2023/2021 (SUSTECH4H2O), POCI-01-0145-FEDER-007688 and European Interdisciplinary Action (COST Action, Belgium, CA21159, PhoBioS). A. F. M. Santos also acknowledges FCT-MCTES, Portugal, for the PhD Grant (SFRH/BD/132551/2017) and I. Matos for the contract CEECIND/004431/2022. Publisher Copyright: © 2024 The Author(s) |
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Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystalCharge migration mechanismsConfinementDielectric Relaxation SpectroscopyIonic conductivityIonic liquid crystalsNyquist plots and circuitsElectronic, Optical and Magnetic MaterialsAtomic and Molecular Physics, and OpticsCondensed Matter PhysicsSpectroscopyPhysical and Theoretical ChemistryMaterials ChemistryFunding Information: This work was supported by the Associate Laboratory for Green Chemistry LAQV ( UID/QUI/50006/2019 ), i3N (UID/ CTM / 50025/2019 ) and CeFEMA (UID/ CTM / 04540/2019 ), which are financed by national funds from FCT- MCTES and by FEDER funds through the COMPETE 2020 Program. The authors also thank the National Funds through FCT- MCTES and POR Lisboa 2020, under the project numbers PTDC/EAM - AMB / 2023/2021 ( SUSTECH4H2O ), POCI-01-0145-FEDER-007688 and European Interdisciplinary Action ( COST Action CA21159 , PhoBioS). A. F. M. Santos also acknowledges FCT- MCTES for the PhD Grant ( SFRH/BD/132551/2017 ) and I. Matos for the contract CEECIND/004431/2022 . Funding Information: This work was supported by the Associate Laboratory for Green Chemistry LAQV, Portugal, (LA/P/0008/2020, UIDB/50006/2020, UIDP/50006/2020), i3N, Portugal, (LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020), CQE, Portugal, (UIDB/00100/2020, UIDP/00100/2020) and CeFEMA, Portugal, (UIDB/04540/2020, UIDP/04540/2020), which are financed by national funds from FCT-MCTES, Portugal, and by FEDER funds through the COMPETE 2020, Portugal, Program. The authors also thank the National Funds through FCT-MCTES, Portugal and POR Lisboa 2020, under the project numbers PTDC/EAM-AMB/2023/2021 (SUSTECH4H2O), POCI-01-0145-FEDER-007688 and European Interdisciplinary Action (COST Action, Belgium, CA21159, PhoBioS). A. F. M. Santos also acknowledges FCT-MCTES, Portugal, for the PhD Grant (SFRH/BD/132551/2017) and I. Matos for the contract CEECIND/004431/2022. Publisher Copyright: © 2024 The Author(s)Hybrid solid-like materials prepared from the incorporation of liquid-like ionic conductors into nanoporous matrices could represent an advantage for a variety of electronic applications. Aiming to obtain such materials, three composites of the polymorphic ionic liquid crystal (ILC) 1-hexadecyl-2-methylpyridinium bromide ([C16-2-Pic][Br]), loaded in the mesoporous inorganic silica SBA-15 (∼6.8 nm in pore diameter), were prepared at guest–host weight fractions of ∼ 40, 60 and 80% (w/w) and investigated by different techniques: ATR-FTIR, BET, TGA, XRD and DSC. Complete amorphisation was achieved for the 40 and 60% composites, while the 80% preparation was stabilised in the low-T morph of native C16, being in the liquid state at room temperature. Furthermore, through Dielectric Relaxation Spectroscopy, the ionic conductivity of the three hybrid materials was characterised, allowing to deconvolute this property in a pure ohmic contribution (conductivity I) and the overlapping of ac − dc transition with interfacial polarisation resulting from the coexistence of the ionic liquid and the quasi-insulating inorganic matrix (conductivity II). From –20 to 20 °C, the conductivity and the corresponding charge migration are faster in all composites relative to the neat ILC, as deduced from the inferior radii of Nyquist arcs. The 60% preparation stood out from the other materials, exhibiting direct conductivity unaffected by electrode polarisation over a larger T-range, leading to the assumption of a nearly continuous silica-mediated charge migration pathway, which is never reached for the 40% composite, while, in the 80% preparation, some C16 deposits on the outer surface of the pores. Incorporation into the silica matrix proved to be a good strategy for the production of cost-efficient materials with long-term stabilisation of the ionic liquid in a single phase over a large range of temperatures, enabling the prediction of flow and conductive properties.DQ - Departamento de QuímicaLAQV@REQUIMTEDCM - Departamento de Ciência dos MateriaisCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNSantos, Andreia F. M.Teresa Viciosa, M.Matos, InêsSotomayor, João C.Figueirinhas, João L.Godinho, Maria H.Branco, Luís C.Dias, C. J.Dionísio, Madalena2024-05-24T00:31:39Z2024-06-012024-06-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article15application/pdfhttp://hdl.handle.net/10362/167743eng0167-7322PURE: 91497589https://doi.org/10.1016/j.molliq.2024.124830info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-09-09T01:38:41Zoai:run.unl.pt:10362/167743Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-09-09T01:38:41Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
| dc.title.none.fl_str_mv |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| title |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| spellingShingle |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal Santos, Andreia F. M. Charge migration mechanisms Confinement Dielectric Relaxation Spectroscopy Ionic conductivity Ionic liquid crystals Nyquist plots and circuits Electronic, Optical and Magnetic Materials Atomic and Molecular Physics, and Optics Condensed Matter Physics Spectroscopy Physical and Theoretical Chemistry Materials Chemistry |
| title_short |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| title_full |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| title_fullStr |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| title_full_unstemmed |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| title_sort |
Impact of nanoconfinement on the physical state and conductivity mechanisms of a 2-picolinium ionic liquid crystal |
| author |
Santos, Andreia F. M. |
| author_facet |
Santos, Andreia F. M. Teresa Viciosa, M. Matos, Inês Sotomayor, João C. Figueirinhas, João L. Godinho, Maria H. Branco, Luís C. Dias, C. J. Dionísio, Madalena |
| author_role |
author |
| author2 |
Teresa Viciosa, M. Matos, Inês Sotomayor, João C. Figueirinhas, João L. Godinho, Maria H. Branco, Luís C. Dias, C. J. Dionísio, Madalena |
| author2_role |
author author author author author author author author |
| dc.contributor.none.fl_str_mv |
DQ - Departamento de Química LAQV@REQUIMTE DCM - Departamento de Ciência dos Materiais CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N) RUN |
| dc.contributor.author.fl_str_mv |
Santos, Andreia F. M. Teresa Viciosa, M. Matos, Inês Sotomayor, João C. Figueirinhas, João L. Godinho, Maria H. Branco, Luís C. Dias, C. J. Dionísio, Madalena |
| dc.subject.por.fl_str_mv |
Charge migration mechanisms Confinement Dielectric Relaxation Spectroscopy Ionic conductivity Ionic liquid crystals Nyquist plots and circuits Electronic, Optical and Magnetic Materials Atomic and Molecular Physics, and Optics Condensed Matter Physics Spectroscopy Physical and Theoretical Chemistry Materials Chemistry |
| topic |
Charge migration mechanisms Confinement Dielectric Relaxation Spectroscopy Ionic conductivity Ionic liquid crystals Nyquist plots and circuits Electronic, Optical and Magnetic Materials Atomic and Molecular Physics, and Optics Condensed Matter Physics Spectroscopy Physical and Theoretical Chemistry Materials Chemistry |
| description |
Funding Information: This work was supported by the Associate Laboratory for Green Chemistry LAQV ( UID/QUI/50006/2019 ), i3N (UID/ CTM / 50025/2019 ) and CeFEMA (UID/ CTM / 04540/2019 ), which are financed by national funds from FCT- MCTES and by FEDER funds through the COMPETE 2020 Program. The authors also thank the National Funds through FCT- MCTES and POR Lisboa 2020, under the project numbers PTDC/EAM - AMB / 2023/2021 ( SUSTECH4H2O ), POCI-01-0145-FEDER-007688 and European Interdisciplinary Action ( COST Action CA21159 , PhoBioS). A. F. M. Santos also acknowledges FCT- MCTES for the PhD Grant ( SFRH/BD/132551/2017 ) and I. Matos for the contract CEECIND/004431/2022 . Funding Information: This work was supported by the Associate Laboratory for Green Chemistry LAQV, Portugal, (LA/P/0008/2020, UIDB/50006/2020, UIDP/50006/2020), i3N, Portugal, (LA/P/0037/2020, UIDB/50025/2020, UIDP/50025/2020), CQE, Portugal, (UIDB/00100/2020, UIDP/00100/2020) and CeFEMA, Portugal, (UIDB/04540/2020, UIDP/04540/2020), which are financed by national funds from FCT-MCTES, Portugal, and by FEDER funds through the COMPETE 2020, Portugal, Program. The authors also thank the National Funds through FCT-MCTES, Portugal and POR Lisboa 2020, under the project numbers PTDC/EAM-AMB/2023/2021 (SUSTECH4H2O), POCI-01-0145-FEDER-007688 and European Interdisciplinary Action (COST Action, Belgium, CA21159, PhoBioS). A. F. M. Santos also acknowledges FCT-MCTES, Portugal, for the PhD Grant (SFRH/BD/132551/2017) and I. Matos for the contract CEECIND/004431/2022. Publisher Copyright: © 2024 The Author(s) |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024-05-24T00:31:39Z 2024-06-01 2024-06-01T00:00:00Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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publishedVersion |
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http://hdl.handle.net/10362/167743 |
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http://hdl.handle.net/10362/167743 |
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eng |
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eng |
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0167-7322 PURE: 91497589 https://doi.org/10.1016/j.molliq.2024.124830 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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15 application/pdf |
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