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http://hdl.handle.net/10773/19469
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Souza, Adelmo S. | pt |
dc.contributor.author | Nunes, Luiz A. O. | pt |
dc.contributor.author | Silva, Ivan G. N. | pt |
dc.contributor.author | Oliveira, Fernando A. M. | pt |
dc.contributor.author | da Luz, Leonis L. | pt |
dc.contributor.author | Brito, Hermi F. | pt |
dc.contributor.author | Felinto, Maria C. F. C. | pt |
dc.contributor.author | Ferreira, Rute A. S. | pt |
dc.contributor.author | Junior, Severino A. | pt |
dc.contributor.author | Carlos, Luis D. | pt |
dc.contributor.author | Malta, Oscar L. | pt |
dc.date.accessioned | 2017-12-07T19:13:49Z | - |
dc.date.issued | 2016 | pt |
dc.identifier.issn | 2040-3364 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/19469 | - |
dc.description.abstract | Temperature measurements ranging from a few degrees to a few hundreds of Kelvin are of great interest in the fields of nanomedicine and nanotechnology. Here, we report a new ratiometric luminescent thermometer using thermally excited state absorption of the Eu3+ ion. The thermometer is based on the simple Eu3+ energy level structure and can operate between 180 and 323 K with a relative sensitivity ranging from 0.7 to 1.7% K-1. The thermometric parameter is defined as the ratio between the emission intensities of the D-5(0) -> F-7(4) transition when the D-5(0) emitting level is excited through the F-7(2) (physiological range) or F-7(1) (down to 180 K) level. Nano and microcrystals of Y2O3:Eu3+ were chosen as a proof of concept of the operational principles in which both excitation and detection are within the first biological transparent window. A novel and of paramount importance aspect is that the calibration factor can be calculated from the Eu3+ emission spectrum avoiding the need for new calibration procedures whenever the thermometer operates in different media. | pt |
dc.language.iso | eng | pt |
dc.publisher | ROYAL SOC CHEMISTRY | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/147332/PT | pt |
dc.rights | restrictedAccess | por |
dc.subject | UPCONVERTING NANOPARTICLES | pt |
dc.subject | LUMINESCENT NANOTHERMOMETERS | pt |
dc.subject | FLUORESCENT NANOTHERMOMETERS | pt |
dc.subject | TEMPERATURE-MEASUREMENTS | pt |
dc.subject | ENERGY-TRANSFER | pt |
dc.subject | LIVING CELLS | pt |
dc.subject | NANOSCALE | pt |
dc.subject | SENSORS | pt |
dc.subject | EMISSION | pt |
dc.title | Highly-sensitive Eu3+ ratiometric thermometers based on excited state absorption with predictable calibration | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 5327 | pt |
degois.publication.issue | 9 | pt |
degois.publication.lastPage | 5333 | pt |
degois.publication.title | NANOSCALE | pt |
degois.publication.volume | 8 | pt |
dc.date.embargo | 10000-01-01 | - |
dc.relation.publisherversion | 10.1039/c6nr00158k | pt |
dc.identifier.doi | 10.1039/c6nr00158k | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Highly-sensitive Eu3+ ratiometric thermometers based on excited state absorption with predictable calibration_10.1039c6nr00158k.pdf | 1.19 MB | Adobe PDF |
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