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Isfahani VB, Pereira RFP, Fernandes M, Sabadini RC, Pereira S, Dizaji HR, Arab A, Fortunato E, Pawlicka A, Rego R, Zea Bermudez V, Silva MM. Gellan‐Gum and LiTFSI‐Based Solid Polymer Electrolytes for Electrochromic Devices. ChemistrySelect 2021. [DOI: 10.1002/slct.202004614] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vahideh Bayzi Isfahani
- Department of Chemistry University of Minho 4710-057 Braga Portugal
- Faculty of Physics Semnan University P.O. Box 35131-19111 Semnan Iran
| | | | - Mariana Fernandes
- Department of Chemistry and CQ-VR University of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Rodrigo C. Sabadini
- University of São Paulo Av. Trabalhador Sãocarlense 400 13566-590 São Carlos SP Brazil
| | - Sónia Pereira
- CENIMAT/I3 N Departamento de Ciência dos Materiais FCT University of Nova Lisbon and CEMOP-UNINOVA 2829-516 Caparica Portugal
| | | | - Ali Arab
- Department of Chemistry Semnan University P.O. Box 35131-19111 Semnan Iran
| | - Elvira Fortunato
- CENIMAT/I3 N Departamento de Ciência dos Materiais FCT University of Nova Lisbon and CEMOP-UNINOVA 2829-516 Caparica Portugal
| | - Agnieszka Pawlicka
- University of São Paulo Av. Trabalhador Sãocarlense 400 13566-590 São Carlos SP Brazil
| | - Rosa Rego
- Department of Chemistry and CQ-VR University of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Verónica Zea Bermudez
- Department of Chemistry and CQ-VR University of Trás-os-Montes e Alto Douro 5000-801 Vila Real Portugal
| | - Maria M. Silva
- Department of Chemistry University of Minho 4710-057 Braga Portugal
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2
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Xue Y, Wang F, Torculas M, Lofland S, Hu X. Formic Acid Regenerated Mori, Tussah, Eri, Thai, and Muga Silk Materials: Mechanism of Self-Assembly. ACS Biomater Sci Eng 2019; 5:6361-6373. [PMID: 33417811 DOI: 10.1021/acsbiomaterials.9b00577] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Flexible and water-insoluble regenerated silk materials have caught considerable interest due to their mechanical properties and numerous potential applications in medical fields. In this study, regenerated Mori (China), Thai, Eri, Muga, and Tussah silk films were prepared by a formic acid-calcium chloride (FA) method, and their structures, morphologies, and other physical properties were comparatively studied through Fourier transform infrared spectroscopy (FTIR), wide-angle X-ray scattering (WAXS), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and thermogravimetric analysis (TGA). FTIR results demonstrated that the secondary structures of those five types of silk films are different from those of their respective natural silk fibers, whose structures are dominated by stacked rigid intermolecular β-sheet crystals. Instead, intramolecular β-sheet structures were found to dominate these silk films made by FA method, as confirmed by WAXS. We propose that silk I-like structures with intramolecular β-sheets lead to water insolubility and mechanical flexibility. This comparative study offers a new pathway to understanding the tunable properties of silk-based biomaterials.
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Affiliation(s)
| | - Fang Wang
- Center of Analysis and Testing, Nanjing Normal University, Nanjing 210023, China
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3
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Medronho B, Filipe A, Napso S, Khalfin RL, Pereira RFP, de Zea Bermudez V, Romano A, Cohen Y. Silk Fibroin Dissolution in Tetrabutylammonium Hydroxide Aqueous Solution. Biomacromolecules 2019; 20:4107-4116. [DOI: 10.1021/acs.biomac.9b00946] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bruno Medronho
- Faculty of Sciences and Technology (MeditBio), Ed. 8, University of Algarve, Campus de Gambelas, Faro 8005-139, Portugal
- FSCN, Surface and Colloid Engineering, Mid Sweden University, Sundsvall SE-851 70, Sweden
| | - Alexandra Filipe
- Faculty of Sciences and Technology (MeditBio), Ed. 8, University of Algarve, Campus de Gambelas, Faro 8005-139, Portugal
| | - Sofia Napso
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Technion City, Haifa 3200003, Israel
| | - Rafail. L. Khalfin
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Technion City, Haifa 3200003, Israel
| | - Rui F. P. Pereira
- Center of Chemistry and Department of Chemistry, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal
| | - Verónica de Zea Bermudez
- Department of Chemistry/CQ-VR, University of Trás-os-Montes e Alto Douro, Vila Real 5001-801, Portugal
| | - Anabela Romano
- Faculty of Sciences and Technology (MeditBio), Ed. 8, University of Algarve, Campus de Gambelas, Faro 8005-139, Portugal
| | - Yachin Cohen
- Department of Chemical Engineering, Technion-Israel Institute of Technology, Technion City, Haifa 3200003, Israel
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Nunes SC, Saraiva SM, Pereira RFP, Silva MM, Carlos LD, Almeida P, Gonçalves MC, Ferreira RAS, Bermudez VDZ. Luminescent κ-Carrageenan-Based Electrolytes Containing Neodymium Triflate. Molecules 2019; 24:E1020. [PMID: 30875749 PMCID: PMC6471547 DOI: 10.3390/molecules24061020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/06/2019] [Accepted: 03/08/2019] [Indexed: 11/16/2022] Open
Abstract
In recent years, the synthesis of polymer electrolyte systems derived from biopolymers for the development of sustainable green electrochemical devices has attracted great attention. Here electrolytes based on the red seaweeds-derived polysaccharide κ-carrageenan (κ-Cg) doped with neodymium triflate (NdTrif₃) and glycerol (Gly) were obtained by means of a simple, clean, fast, and low-cost procedure. The aim was to produce near-infrared (NIR)-emitting materials with improved thermal and mechanical properties, and enhanced ionic conductivity. Cg has a particular interest, due to the fact that it is a renewable, cost-effective natural polymer and has the ability of gelling in the presence of certain alkali- and alkaline-earth metal cations, being good candidates as host matrices for accommodating guest cations. The as-synthesised κ-Cg-based membranes are semi-crystalline, reveal essentially a homogeneous texture, and exhibit ionic conductivity values 1⁻2 orders of magnitude higher than those of the κ-Cg matrix. A maximum ionic conductivity was achieved for 50 wt.% Gly/κ-Cg and 20 wt.% NdTrif₃/κ-Cg (1.03 × 10-4, 3.03 × 10-4, and 1.69 × 10-4 S cm-1 at 30, 60, and 97 °C, respectively). The NdTrif-based κ-Cg membranes are multi-wavelength emitters from the ultraviolet (UV)/visible to the NIR regions, due to the κ-Cg intrinsic emission and to Nd3+, ⁴F3/2→⁴I11/2-9/2.
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Affiliation(s)
- S C Nunes
- Chemistry Department, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal.
| | - S M Saraiva
- Chemistry Department, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
| | - R F P Pereira
- Chemistry Department, University of Minho, 4710-057 Braga, Portugal.
| | - M M Silva
- Chemistry Department, University of Minho, 4710-057 Braga, Portugal.
| | - L D Carlos
- Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - P Almeida
- Chemistry Department, University of Beira Interior, 6201-001 Covilhã, Portugal.
- CICS-UBI, University of Beira Interior, 6201-001 Covilhã, Portugal.
| | - M C Gonçalves
- Chemistry Department, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
- CQ-VR, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
| | - R A S Ferreira
- Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - V de Zea Bermudez
- Chemistry Department, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
- CQ-VR, University of Trás-os-Montes e Alto Douro, 5001-801 Vila Real, Portugal.
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Luminescent Electrochromic Devices for Smart Windows of Energy-Efficient Buildings. ENERGIES 2018. [DOI: 10.3390/en11123513] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
To address the challenges of the next generation of smart windows for energy-efficient buildings, new electrochromic devices (ECDs) are introduced. These include indium molybdenum oxide (IMO), a conducting oxide transparent in the near-infrared (NIR) region, and a NIR-emitting electrolyte. The novel electrolytes are based on a sol-gel-derived di-urethane cross-linked siloxane-based host structure, including short chains of poly (ε-caprolactone) (PCL(530) (where 530 represents the average molecular weight in g mol−1). This hybrid framework was doped with a combination of either, lithium triflate (LiTrif) and erbium triflate (ErTrif3), or LiTrif and bisaquatris (thenoyltrifluoroacetonate) erbium (III) ([Er(tta)3(H2O)2]). The ECD@LiTrif-[Er(tta)3(H2O)2] device presents a typical Er3+ NIR emission around 1550 nm. The figures of merit of these devices are high cycling stability, good reversibility, and unusually high coloration efficiency (CE = ΔOD/ΔQ, where Q is the inserted/de-inserted charge density). CE values of −8824/+6569 cm2 C−1 and −8243/+5200 cm2 C−1 were achieved at 555 nm on the 400th cycle, for ECD@LiTrif-ErTrif3 and ECD@LiTrif-[Er(tta)3(H2O)2], respectively.
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Pereira RFP, Zehbe K, Günter C, dos Santos T, Nunes SC, Paz FAA, Silva MM, Granja PL, Taubert A, de Zea Bermudez V. Ionic Liquid-Assisted Synthesis of Mesoporous Silk Fibroin/Silica Hybrids for Biomedical Applications. ACS OMEGA 2018; 3:10811-10822. [PMID: 30320252 PMCID: PMC6173513 DOI: 10.1021/acsomega.8b02051] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 08/24/2018] [Indexed: 06/08/2023]
Abstract
New mesoporous silk fibroin (SF)/silica hybrids were processed via a one-pot soft and energy-efficient sol-gel chemistry and self-assembly from a silica precursor, an acidic or basic catalyst, and the ionic liquid 1-butyl-3-methylimidazolium chloride, acting as both solvent and mesoporosity-inducer. The as-prepared materials were obtained as slightly transparent-opaque, amorphous monoliths, easily transformed into powders, and stable up to ca. 300 °C. Structural data suggest the formation of a hexagonal mesostructure with low range order and apparent surface areas, pore volumes, and pore radii of 205-263 m2 g-1, 0.16-0.19 cm3 g-1, and 1.2-1.6 nm, respectively. In all samples, the dominating conformation of the SF chains is the β-sheet. Cytotoxicity/bioactivity resazurin assays and fluorescence microscopy demonstrate the high viability of MC3T3 pre-osteoblasts to indirect (≥99 ± 9%) and direct (78 ± 2 to 99 ± 13%) contact with the SF/silica materials. Considering their properties and further improvements, these systems are promising candidates to be explored in bone tissue engineering. They also offer excellent prospects as electrolytes for solid-state electrochemical devices, in particular for fuel cells.
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Affiliation(s)
- Rui F. P. Pereira
- Chemistry
Center, University of Minho, 4710-057 Braga, Portugal
- CQ-VR and Chemistry Department, University of Trás-os-Montes
e Alto Douro, 5000-801 Vila Real, Portugal
| | - Kerstin Zehbe
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Christina Günter
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Tiago dos Santos
- i3S—Instituto de Investigação
e Inovação
em Saúde and INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
| | - Sílvia C. Nunes
- Chemistry
Department and CICS—Health Sciences Research Centre, University of Beira Interior, 6201-001 Covilhã, Portugal
| | - Filipe A. Almeida Paz
- Chemistry
Department, University of Aveiro, CICECO-Aveiro
Institute of Materials, 3810-193 Aveiro, Portugal
| | - Maria M. Silva
- Chemistry
Center, University of Minho, 4710-057 Braga, Portugal
| | - Pedro L. Granja
- i3S—Instituto de Investigação
e Inovação
em Saúde and INEB—Instituto de Engenharia Biomédica, Universidade do Porto, 4200-135 Porto, Portugal
- Instituto
de Ciências Biomédicas Abel Salazar, Universidade do Porto, 4200-465 Porto, Portugal
- Faculdade
de Engenharia, Universidade
do Porto, 4200-465 Porto, Portugal
| | - Andreas Taubert
- Institute
of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, D-14476 Potsdam, Germany
| | - Verónica de Zea Bermudez
- CQ-VR and Chemistry Department, University of Trás-os-Montes
e Alto Douro, 5000-801 Vila Real, Portugal
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Pereira RFP, Brito-Pereira R, Gonçalves R, Silva MP, Costa CM, Silva MM, de Zea Bermudez V, Lanceros-Méndez S. Silk Fibroin Separators: A Step Toward Lithium-Ion Batteries with Enhanced Sustainability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5385-5394. [PMID: 29369609 DOI: 10.1021/acsami.7b13802] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Battery separators based on silk fibroin (SF) have been prepared aiming at improving the environmental issues of lithium-ion batteries. SF materials with three different morphologies were produced: membrane films (SF-F), sponges prepared by lyophilization (SF-L), and electrospun membranes (SF-E). The latter materials presented a suitable porous three-dimensional microstructure and were soaked with a 1 M LiPF6 electrolyte. The ionic conductivities for SF-L and SF-E were 1.00 and 0.32 mS cm-1 at 20 °C, respectively. A correlation between the fraction of β-sheet conformations and the ionic conductivity was observed. The electrochemical performance of the SF-based materials was evaluated by incorporating them in cathodic half-cells with C-LiFePO4. The discharge capacities of SF-L and SF-E were 126 and 108 mA h g-1, respectively, at the C/2-rate and 99 and 54 mA h g-1, respectively, at the 2C-rate. Furthermore, the capacity retention and capacity fade of the SF-L membrane after 50 cycles at the 2C-rate were 72 and 5%, respectively. These electrochemical results show that a high percentage of β-sheet conformations were of prime importance to guarantee excellent cycling performance. This work demonstrates that SF-based membranes are appropriate separators for the production of environmentally friendlier lithium-ion batteries.
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Affiliation(s)
- Rui F P Pereira
- Departamento de Química, Universidade de Trás-os-Montes e Alto Douro , 5001-801 Vila Real, Portugal
| | | | | | - Marco P Silva
- C-MAST-Centre for Mechanical and Aerospace Science and Technologies, Universidade da Beira Interior , 6200-001 Covilhã, Portugal
| | | | | | - Verónica de Zea Bermudez
- Departamento de Química, Universidade de Trás-os-Montes e Alto Douro , 5001-801 Vila Real, Portugal
- CQ-VR Universidade de Trás-os-Montes e Alto Douro , 5001-801 Vila Real, Portugal
| | - Senentxu Lanceros-Méndez
- BCMaterials, Parque Científico y Tecnológico de Bizkaia , 48160 Derio, Spain
- IKERBASQUE, Basque Foundation for Science , Bilbao 48013, Spain
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Alves R, Sentanin F, Sabadini R, Pawlicka A, Silva M. Innovative electrolytes based on chitosan and thulium for solid state applications: Synthesis, structural, and thermal characterization. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.02.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Sim L, Sentanin F, Pawlicka A, Yahya R, Arof A. Development of polyacrylonitrile-based polymer electrolytes incorporated with lithium bis(trifluoromethane)sulfonimide for application in electrochromic device. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.01.098] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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