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Highly Conducting Bombyx mori Silk Fibroin-Based Electrolytes Incorporating Glycerol, Dimethyl Sulfoxide and [Bmim]PF6

2020Journal article Open access
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dc.contributor.authorFernandes, Tânia C. D.
dc.contributor.authorGonçalves, Helena M R
dc.contributor.authorPaz, Filipe A. A.
dc.contributor.authorSousa, Joana F. M.
dc.contributor.authorValente, Artur J. M.
dc.contributor.authorSilva, Maria M.
dc.contributor.authorZea Bermudez, Verónica de
dc.contributor.authorPereira, Rui F. P.
dc.date.accessioned2022-01-14T11:39:12Z
dc.date.available2022-01-14T11:39:12Z
dc.date.issued2020
dc.description.abstractGreen, transparent and flexible electrolyte films composed of a Bombyx mori silk fibroin (SF) host biopolymer doped with glycerol (G), dimethyl sulfoxide (DMSO, D) and 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim]PF6) ionic liquid (IL), were synthesized. The materials were represented by the notation SF@GD@ILx (x = 15, 20 and 30 is the mass ratio of SF/[Bmim]PF6 in %). SF@, SF@G, SF@D and SF@GD samples were also prepared. DMSO was found to play a dual-role, acting as solvent of [Bmim]PF6, and enhancing ionic conductivity. DMSO, alone or combined with [Bmim]PF6, led to the increase of the mean roughness and induced the formation of more ordered Silk II conformations (β-sheets). No structural modifications were detected in the SF@GD@ILx samples upon increasing the temperature up to 100 °C. The highest ionic conductivity was exhibited by the IL-rich sample SF@GD@IL30 (1.07 and 4.61 mS cm−1, at 22 and 100 °C, respectively). In the [Bmim]PF6-doped electrolytes "free" and coordinated PF6− ions coexist. The weight losses occurring below 200 °C involved essentially the release of adsorbed water and DMSO. The suitable mechanical properties, high ionic conductivity and good electrochemical stability suggest that these electrolytes are attractive candidates for application in electrochemical devices.pt_PT
dc.description.sponsorshipVerónica de Zea Bermudez would like to express her gratitude to Professor Michel Armand who, during her PhD thesis at Grenoble (1989–1992), was an endless source of ideas that made her work productive and stimulating. His qualities, as an inspiring and extraordinary scientist, equal his kindness, generosity and great heart. This work was supported by National funds by Foundation for Science and Technology (FCT) in the framework of the Strategic Funding UID/QUI/00686/2018, UID/QUI/00686/2019, UID/QUI/50006/2019 and UID/QUI/00313/2020. The authors thank FEDER funds through the COMPETE 2020 Program and National Funds through FCT under the projects PEst-OE/QUI/UI0616/2014, LUMECD (POCI-01-0145-FEDER-016884 and PTDC/CTM-NAN/0956/2014), UniRCell (POCI-01-0145-FEDER-016422 and SAICTPAC/0032/2015), PORPLANTSURF (POCI-01-0145-FEDER-029785 and PTDC/CTM-REF/29785/2017), and NORTE-01-0145-FEDER-030858. R.F.P.P thanks FCT-UM for the researcher contract in the scope of Decreto-Lei 57/2016 and 57/2017. H.M.R. Gonçalves was funded by PTDC/BTM-MAT/30858/2017.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1149/1945-7111/ab8313pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/19486
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIOP Sciencept_PT
dc.relationUID/QUI/00686/2018pt_PT
dc.relationUID/QUI/00313/2020pt_PT
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationChemistry Research Centre of the University of Minho
dc.relationPOCI-01-0145-FEDER-016884pt_PT
dc.relationLuminescent electrochromic devices incorporating organic/inorganic (bio)hybrid electrolytes
dc.relationUnitised regenerative fuel cell for efficient renewable energy supply: from materials to device
dc.relationNORTE-01-0145-FEDER-030858pt_PT
dc.relationCarbon Dots as effective agents in photodynamic therapy.
dc.relation.publisherversionhttps://iopscience.iop.org/article/10.1149/1945-7111/ab8313pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectBombyx mori silk fibroin (SF)pt_PT
dc.subject[Bmim]PF6pt_PT
dc.titleHighly Conducting Bombyx mori Silk Fibroin-Based Electrolytes Incorporating Glycerol, Dimethyl Sulfoxide and [Bmim]PF6pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardTitleChemistry Research Centre of the University of Minho
oaire.awardTitleLuminescent electrochromic devices incorporating organic/inorganic (bio)hybrid electrolytes
oaire.awardTitleUnitised regenerative fuel cell for efficient renewable energy supply: from materials to device
oaire.awardTitleCarbon Dots as effective agents in photodynamic therapy.
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F50006%2F2019/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTM-NAN%2F0956%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/SAICTPAC%2F0032%2F2015/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FCTM-REF%2F29785%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FBTM-MAT%2F30858%2F2017/PT
oaire.citation.issue7pt_PT
oaire.citation.startPage070551pt_PT
oaire.citation.titleJournal of The Electrochemical Societypt_PT
oaire.citation.volume167pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream5876
oaire.fundingStream9471 - RIDTI
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person.familyNameGonçalves
person.givenNameHelena
person.identifier.ciencia-id001B-0C41-0881
person.identifier.orcid0000-0001-6210-8736
person.identifier.ridAAC-5108-2020
person.identifier.scopus-author-id7003936551
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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