Issue 36, 2016

Insight into a reversible energy transfer system

Abstract

Resonance energy transfer (RET) processes have wide applications; these processes involve a unidirectional energy transfer from a particular donor to a particular acceptor. Here, we report a plasmonic resonance energy transfer (PRET), which occurs from the surface of gold nanoparticles to fluorescent organic dyes, and coexists with a nanometal surface energy transfer (NSET) that operates in the reverse direction. The coexistence of both PRET and NSET in opposite directions means that the roles of both donor and acceptor can be interchanged, which could be identified by using spectrofluorometric measurements and light scattering dark field microscopic imaging. The experimental data could be further theoretically supported using Persson and Lang's model, the quasi-static approximation and finite-difference time-domain simulation. Moreover, disruption of the PRET process by altering the energy transfer pairs suggests that interactions occur inside the reversible energy transfer system, which manifest by increasing the fluorescence quenching efficiency of the NSET process.

Graphical abstract: Insight into a reversible energy transfer system

Supplementary files

Article information

Article type
Paper
Submitted
21 Apr 2016
Accepted
04 Aug 2016
First published
12 Aug 2016

Nanoscale, 2016,8, 16236-16242

Insight into a reversible energy transfer system

M. X. Gao, H. Y. Zou, P. F. Gao, Y. Liu, N. Li, Y. F. Li and C. Z. Huang, Nanoscale, 2016, 8, 16236 DOI: 10.1039/C6NR03262A

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