Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 95, 2016, Issue in Progress
Previous Article Next Article

Upconversion luminescence nanoprobe based on luminescence resonance energy transfer from NaYF4:Yb, Tm to Ag nanodisks

Author affiliations

Abstract

In this work, we reported a luminescence probe based on luminescence resonance energy transfer (LRET), in which the positively charged upconversion nanoparticles (UCNPs) were used as the energy donors and the negatively charged Ag nanodisks (Ag NPs) as the energy acceptors. They bound together through electrostatic interaction, and luminescence quenching was observed due to the LRET from UCNPs to Ag NPs. However, the luminescence intensities recovered with the addition of cysteine (Cys). This was due to the formation of S–Ag bonds, which caused the inhibition of the LRET process. Under the optimized conditions, the relationship between the luminescence intensity and the concentration of cysteine were linear in the range from 50 to 2000 μM. The proposed LRET system also showed high selectivity to Cys and would also be used to detect other biothiols. Thus, the as-prepared probe possesses potential applications in the detection of biothiols.

Graphical abstract: Upconversion luminescence nanoprobe based on luminescence resonance energy transfer from NaYF4:Yb, Tm to Ag nanodisks

Back to tab navigation

Article information


Submitted
13 Jul 2016
Accepted
22 Sep 2016
First published
22 Sep 2016

RSC Adv., 2016,6, 92428-92433
Article type
Paper

Upconversion luminescence nanoprobe based on luminescence resonance energy transfer from NaYF4:Yb, Tm to Ag nanodisks

B. Si, Y. Wang, S. Lu, E. Liu, X. Hu and J. Fan, RSC Adv., 2016, 6, 92428
DOI: 10.1039/C6RA17837E

Social activity

Search articles by author

Spotlight

Advertisements