Issue 14, 2022

Lanthanide-doped bismuth-based nanophosphors for ratiometric upconversion optical thermometry

Abstract

Nanothermometry could realize stable, efficient, and noninvasive temperature detection at the nanoscale. Unfortunately, most applications of nanothermometers are still limited due to their intricate synthetic process and low-temperature sensitivity. Herein, we reported a kind of novel bismuth-based upconversion nanomaterial with a fast and facile preparation strategy. The bismuth-based upconversion luminophore was synthesized by the co-precipitation method within 1 minute. By optimizing the doping ratio of the sensitizer Yb ion and the activator Er ion and adjusting the synthetic solvent strategy, the crystallinity of the nanomaterials was increased and the upconversion luminescence intensity was improved. Ratiometric upconversion optical measurements of temperature in the range of 278 K to 358 K can be achieved by ratiometric characteristic emission peaks of thermally sensitive Er ion. This method of rapidly constructing nanometer temperature probes provides a feasible strategy for the construction of novel fluorescent temperature probes.

Graphical abstract: Lanthanide-doped bismuth-based nanophosphors for ratiometric upconversion optical thermometry

Supplementary files

Article information

Article type
Paper
Submitted
22 Feb 2022
Accepted
14 Mar 2022
First published
21 Mar 2022
This article is Open Access
Creative Commons BY license

RSC Adv., 2022,12, 8743-8749

Lanthanide-doped bismuth-based nanophosphors for ratiometric upconversion optical thermometry

J. Du, J. Liu, Y. Chen, Y. Zhao, Y. Li and Y. Miao, RSC Adv., 2022, 12, 8743 DOI: 10.1039/D2RA01181F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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