Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/36037
Title: | Plate-like CDots/EuBDC nanocomposite for ratiometric luminescence thermometry |
Author: | Silva, Kleyton Ritomar Monteiro da Calado, Claudia Manuela Santos Santos, Thatiane Verı´ssimo dos Sales, Tasso de Oliveira Viana, Rodrigo da Silva Silva, Uéslen Rocha Ferreira, Rute A. S. Carlos, Luís D. Barbosa, Cintya D. A. E. S. |
Issue Date: | 18-Jul-2022 |
Publisher: | Royal Society of Chemistry |
Abstract: | The synthesis of dual-emission nanocomposite materials has emerged as an excellent strategy for designing new and advanced luminescent ratiometric thermometers. In the present work, a dual-emission nanocomposite material based on carbon dots (CDots), with chitosan as the precursor, and Europium–Organic Framework (CDots/EuBDC) was prepared, through ultrasonic synthesis, and applied as a ratiometric thermometer. Whereas the as-synthesized nanocomposite maintains the crystalline structure of EuBDC, its thermal stability increases and the surface area decreases due to the CDots incorporation. The ratio of the CDots/EuBDC emission intensities (ICDots/IEu) is temperature-dependent in the 293 to 348 K range, in which the intensity of the Eu3+ 5D0 → 7F2 transition works as a reference signal. The CDots/EuBDC luminescent thermometer shows a maximum relative thermal sensitivity of 1.58% K−1 at 293 K and a colorimetric temperature response with (x, y) CIE color coordinates ranging from blue (0.36, 0.27), at 293 K, to orange (0.43, 0.30), at 343 K. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/36037 |
DOI: | 10.1039/d2tc01587k |
ISSN: | 2050-7526 |
Appears in Collections: | CICECO - Artigos DFis - Artigos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
paper.pdf | 3.58 MB | Adobe PDF |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.