| Full text | |
| Author(s): |
Ferreira, Flavia de Sousa
[1]
;
de Morais, Amanda Justino
[1]
;
Santos Calado, Claudia Manuela
[1]
;
Iikawa, Fernando
[2]
;
Couto Junior, Odilon D. D.
[2]
;
Brunet, Gabriel
[3]
;
Murugesu, Muralee
[3]
;
Mazali, Italo O.
[1]
;
Sigoli, Fernando A.
[1]
Total Authors: 9
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Chem, UNICAMP, POB 6154, BR-13083970 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Inst Phys Gleb Wataghin, UNICAMP, POB 6165, BR-13083970 Campinas, SP - Brazil
[3] Univ Ottawa, Dept Chem & Biomol Sci, Ottawa, ON K1N 6N5 - Canada
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | NANOSCALE; v. 13, n. 35 JUL 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The engineering of core@multi-shell nanoparticles containing heterogeneous crystalline phases in different layers constitutes an important strategy for obtaining optical probes. The possibility of obtaining an opto-magnetic core@multi-shell nanoparticle capable of emitting in the visible and near-infrared ranges by upconversion and downshifting processes is highly desirable, especially when its optical responses are dependent on temperature and magnetic field variations. This work proposes the synthesis of hierarchically structured core@multi-shell nanoparticles of heterogeneous crystalline phases: a cubic core containing Dy-III ions responsible for magnetic properties and optically active hexagonal shells, where Er-III, Yb-III, and Nd-III ions were distributed. This system shows at least three excitation energies located at different biological windows, and its emission intensities are sensitive to temperature and external magnetic field variations. The selected crystalline phases of the core@multi-shell nanoparticles obtained in this work is fundamental to the development of multifunctional materials with potential applications as temperature and magnetic field optical probes. (AU) | |
| FAPESP's process: | 12/11382-9 - Optical modulation of semiconductor nanostructures using surface acoustic waves |
| Grantee: | Odilon Divino Damasceno Couto Júnior |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 13/22127-2 - Development of novel materials strategic for integrated analytical devices |
| Grantee: | Lauro Tatsuo Kubota |
| Support Opportunities: | Research Projects - Thematic Grants |