Lanthanide-doped bismuth-based nanophosphors for ratiometric upconversion optical thermometry. Issue 14 (21st March 2022)

• Record Type: Journal Article
• Authors: Du, Jun; Liu, Jinliang; Chen, Ying; Zhao, Yuefeng; Li, Yuhao; Miao, Yuqing
• Is Part Of: RSC advances. Volume 12:Issue 14(2022)
• Page Start: 8743
• Page End: 8749
• Publication Date: 2022-03-21
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra01181f
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Lanthanide-doped bismuth-based nanospheres can be rapidly synthesized within 1 minute for upconversion luminescence ratiometric temperature detection. 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.