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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Lanthanoid-Doped Phosphate/Vanadate Mixed Hollow Particles as Ratiometric Luminescent Sensors

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Author(s):
de Sousa Filho, Paulo C. ; Larquet, Eric ; Dragoe, Diana ; Serra, Osvaldo A. ; Gacoin, Thierry
Total Authors: 5
Document type: Journal article
Source: ACS APPLIED MATERIALS & INTERFACES; v. 9, n. 2, p. 1635-1644, JAN 18 2017.
Web of Science Citations: 13
Abstract

Rare earth (RE) phosphates and vanadates are structurally similar compositions that display distinct but complementary luminescent properties. The properties of these phosphors can be combined in REPO4-REVO4 heterostructures during the development of new sensing technologies for biological applications. This work presents the synthesis of hollow RE phosphate/vanadate colloidal particles and evaluates their applicability as luminescent markers. Hydrothermal treatments of RE hydroxycarbonate particles in the presence of the PO43- and VO43- precursors afforded the final REPO4-REVO4 solids in a two-step template synthesis. We converted precursor hydroxycarbonate particles into the final heterostructures and characterized their structure and morphology. According to our detailed study into the spectroscopic properties of Eu3+-doped particles and their luminescence response to several species, the presence of the phosphate and vanadate phases in a single particle provided different chemical environments and enabled the design of a ratiometric approach to detect H2O2. These results open new perspectives for the development of new intracellular luminescent markers. (AU)

FAPESP's process: 13/01669-1 - Nanostructured phosphors and core@shell systems containing rare earths: applications in biological labeling, lighting, and visualization
Grantee:Paulo Cesar de Sousa Filho
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/22930-2 - Rare Earth-based colloidal luminescent nanoparticles: fundamental studies at the single particle scale and applications as biolabels
Grantee:Paulo Cesar de Sousa Filho
Support Opportunities: Scholarships abroad - Research Internship - Post-doctor