Non-cytotoxic Dy3+ activated La10W22O81 nanophosphors for UV based cool white LEDs and anticancer applications
DC Field | Value | Language |
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dc.contributor.author | Naveen, Kumar K. | - |
dc.contributor.author | Vijayalakshmi, L. | - |
dc.contributor.author | Lim, J. | - |
dc.contributor.author | Choi, Jungwook | - |
dc.date.accessioned | 2023-03-08T05:11:58Z | - |
dc.date.available | 2023-03-08T05:11:58Z | - |
dc.date.issued | 2022-10 | - |
dc.identifier.issn | 1386-1425 | - |
dc.identifier.issn | 1873-3557 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/61211 | - |
dc.description.abstract | White-light-emitting La10W22O81 (LWO): xDy3+ (0.5 ≤ x ≤ 10 mol%) nanocrystalline phosphors were developed by a facile hydrothermal assisted solid-state reaction. X-ray diffraction (XRD) pattern indicated that the prepared samples adopted orthorhombic crystal structures. The agglomeration of uniform nanorods was identified from the FE-SEM analysis of the optimized LWO: 1.5 mol% Dy3+ nanocrystalline phosphors. Additionally, transmission electron microscope, scanning transmission electron microscopy, selected area electron diffraction, and X-ray photoelectron spectroscopy were employed to explore the surface morphology, size, interplanar distance, and chemical composition with valence states of the LWO: 1.5 mol% Dy3+ phosphors, respectively. By exciting with 387 nm, the LWO: Dy3+ emission spectra showed two intense peaks at 476 nm (4F9/2→6H15/2) and 571 nm (4F9/2→6H13/2) and a shoulder peak at 659 nm (4F9/2→6H11/2). Optimum emission intensity was achieved for 1.5 mol% Dy3+ in the LWO host lattice. The luminescence quenching beyond 1.5 mol% Dy3+ is attributed to the dipole–dipole interactions when the Dy3+ (donor) and Dy3+ (acceptor) ions are at a critical distance of 58.53 Å. Photometric studies were conducted to evaluate the performance and practical applicability of the phosphors. The CIE chromaticity diagram suggests that the LWO: 1.5 mol% Dy3+ nanophosphor conspicuously exhibits cool white light. Therefore, this material could be a promising and potential white light-emitting nanocrystalline phosphor material for white light emitting diodes (LEDs) under near-UV excitation. In addition, the toxicity of the optimized nanophosphor in normal WI-38 lung fibroblast cells and MCF-7 breast cancer cells was examined. Surprisingly, LWO: 1.5 mol% Dy3+ nanophosphor was found to be non-cytotoxic to normal cells, but extremely toxic to cancer cells. Therefore, the nanophosphor materials can be considered potential candidates for biomedical applications, particularly for cancer treatment. © 2022 Elsevier B.V. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Non-cytotoxic Dy3+ activated La10W22O81 nanophosphors for UV based cool white LEDs and anticancer applications | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.saa.2022.121309 | - |
dc.identifier.bibliographicCitation | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, v.278 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000944561900001 | - |
dc.identifier.scopusid | 2-s2.0-85129778040 | - |
dc.citation.title | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | - |
dc.citation.volume | 278 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | Anticancer | - |
dc.subject.keywordAuthor | Cytotoxicity | - |
dc.subject.keywordAuthor | Nanophosphors | - |
dc.subject.keywordAuthor | Photoluminescence | - |
dc.subject.keywordAuthor | White-light emission | - |
dc.subject.keywordPlus | LUMINESCENCE PROPERTIES | - |
dc.subject.keywordPlus | ENERGY-TRANSFER | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | CYTOTOXICITY | - |
dc.subject.keywordPlus | PHOSPHORS | - |
dc.subject.keywordPlus | CELLS | - |
dc.subject.keywordPlus | TB3+ | - |
dc.relation.journalResearchArea | Spectroscopy | - |
dc.relation.journalWebOfScienceCategory | Spectroscopy | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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