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Fabrication and photoluminescent properties of Tb3+ doped carbon nanodots.
- Source :
- Scientific Reports; 11/2/2018, Vol. 8 Issue 1, p1-1, 1p
- Publication Year :
- 2018
-
Abstract
- Carbon nanodots (CNDs) doped with Tb ions were synthesized using different synthetic routes: hydrothermal treatment of a solution containing carbon source (sodium dextran sulfate) and TbCl<subscript>3</subscript>; mixing of CNDs and TbCl<subscript>3</subscript> solutions; freezing-induced loading of Tb and carbon-containing source into pores of CaCO<subscript>3</subscript> microparticles followed by hydrothermal treatment. Binding of Tb ions to CNDs (Tb-CND coupling) was confirmed using size-exclusion chromatography and manifested itself through a decrease of the Tb photoluminescence lifetime signal. The shortest Tb photoluminescence lifetime was observed for samples obtained by hydrothermal synthesis of CaCO<subscript>3</subscript> microparticles where Tb and carbon source were loaded into pores via the freezing-induced process. The same system displays an increase of Tb photoluminescence via energy transfer with excitation at 320-340 nm. Based on the obtained results, freezing-induced loading of cations into CNDs using porous CaCO<subscript>3</subscript> microparticles as reactors is proposed to be a versatile route for the introduction of active components into CNDs. The obtained CNDs with long-lived emission may be used for time-resolved imaging and visualization in living biological samples where time-resolved and long-lived luminescence microscopy is required. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 8
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Scientific Reports
- Publication Type :
- Academic Journal
- Accession number :
- 132814576
- Full Text :
- https://doi.org/10.1038/s41598-018-34683-2