Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14365/1135
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dc.contributor.authorGunay, Bensu-
dc.contributor.authorSariyar, Ece-
dc.contributor.authorUnal, Ugur-
dc.contributor.authorKaragonlar, Zeynep Firtina-
dc.contributor.authorSaglam, Ozge-
dc.date.accessioned2023-06-16T12:59:06Z-
dc.date.available2023-06-16T12:59:06Z-
dc.date.issued2021-
dc.identifier.issn0927-7757-
dc.identifier.issn1873-4359-
dc.identifier.urihttps://doi.org/10.1016/j.colsurfa.2020.126003-
dc.identifier.urihttps://hdl.handle.net/20.500.14365/1135-
dc.description.abstractThe upconversion behavior of Er3+/Tm3+ co-doped Ruddlesden-Popper type K(2)Ln(2)Ti(3)O(10) layered perovskites was investigated. The lanthanide pair was selected for achieving 980 nm-driven green, red, and NIR emission. The perovskites having different dopant compositions were synthesized by a conventional solid-state procedure by substitution of La3+ ions in the host lattice. Moreover, the single nanosheets having approximately 1.8 nm thickness and 2 mu m lateral size were obtained via chemical exfoliation. The non-doped and co-doped layered materials and the nanosheets derived from these materials were characterized by X-ray diffraction, Scanning Electron Microscopy, Atomic Force Microscopy and custom-made experimental set-up of upconversion emission spectroscopy. According to the XRD profiles, the perovskites had the layered orientation and water molecules in the interlayer domain because of their hygroscopic nature. The co-doped layered perovskites presented twophoton excited green and red emissions, identified as S-4(3/2) -> (4)I(15/2 )with H-2(11/2) -> (4)I(15/2 )and F-4(9/2) -> I-4(15/2) of the Er3+ transitions with a NIR emission. The intensity of red to green ratio emission of the materials increased with respect to the co-dopant concentration. The nanosheets' upconversion emission was weak in the visible region compared to their layered morphology. On the other hand, the NIR emission based on H-3(4) -> H-3(6) transition of the Tm3+ ions was preserved despite the acid and solvent treatments to break apart the layered orientation. MTT assay and Calcein/PI staining were conducted to evaluate cytotoxicity of non-doped and Er3+/Tm3+ co-doped K(2)Ln(2)Ti(3)O(10) perovskites and their exfoliated nanosheets on HEK 293 and HepG2 cell lines. Both assays indicated that although cell viability decreases with increasing concentration, good cell viability was observed at even 100 mu g/mL. In addition to their excellent luminescent and optical features, the nanomaterials also demonstrated low cytotoxicity increasing the potential for their use in laser-based biological applications.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey [117M512]en_US
dc.description.sponsorshipThis current work was supported by The Scientific and Technological Research Council of Turkey [Grant number117M512]. The authors would like to thank Koc University Surface Science and Technology Center (KUYTAM). The cell lines used in the study were kindly provided by Prof. Dr. Esra Erdal at.Izmir Biomedicine and Genome Center (.IBG).en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofColloıds And Surfaces A-Physıcochemıcal And Engıneerıng Aspectsen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectRare-earth doped materialsen_US
dc.subjectLayered perovskitesen_US
dc.subjectSingle oxide nanosheetsen_US
dc.subjectTwo-dimensional materialsen_US
dc.subjectUpconversion propertiesen_US
dc.subjectIn-vitro cytotoxicityen_US
dc.subjectRare-Earthen_US
dc.subjectEnergy-Transferen_US
dc.subjectNanosheeten_US
dc.subjectLuminescenceen_US
dc.subjectNanoparticlesen_US
dc.subjectEmissionen_US
dc.subjectPhotoluminescenceen_US
dc.subjectK2la2ti3o10en_US
dc.subjectFabricationen_US
dc.subjectLanthanideen_US
dc.titleUpconversion properties of Tm3+-Er3+ co-doped layered perovskites and in-vitro cytotoxicity of their exfoliated nanomaterialsen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.colsurfa.2020.126003-
dc.identifier.scopus2-s2.0-85098226475en_US
dc.departmentİzmir Ekonomi Üniversitesien_US
dc.authoridSaglam, Ozge/0000-0002-5583-3662-
dc.authoridGunay, Bensu/0000-0002-9124-9981-
dc.authoridFIRTINA KARAGONLAR, ZEYNEP/0000-0002-6608-365X-
dc.authorwosidGünay, Bensu/AAA-9332-2021-
dc.authorscopusid57205329801-
dc.authorscopusid57221101358-
dc.authorscopusid6507782445-
dc.authorscopusid57188830121-
dc.authorscopusid55750645300-
dc.identifier.volume612en_US
dc.identifier.wosWOS:000616037200004en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopusqualityQ2-
dc.identifier.wosqualityQ2-
item.grantfulltextreserved-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
crisitem.author.dept05.08. Genetics and Bioengineering-
crisitem.author.dept05.10. Mechanical Engineering-
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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