Journal
TALANTA
Volume 195, Issue -, Pages 752-756Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2018.11.112
Keywords
Surface plasmon coupled emission (SPCE); Fluorescence signal enhancement; Graphene oxide; Silver nanocubes
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Funding
- National Natural Science Foundation of China [21375111, 21874110, 21505109, 21521004, 21804098]
- Fund of the Ministry of Education of the People's Republic of China [PCSIRT IRT17R66]
- Natural Science Foundation of Guangdong Province [2016A030310373]
- Innovation Program for University of Shanxi Province [201802104]
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The enhancement of surface plasmon-coupled emission (SPCE) by the synergistic effect of silver nanocubes (AgNCs) and graphene oxide (GO) on gold film has been observed with the enhancement factor over 30. The enhancement mechanisms were investigated through simulating the electromagnetic (EM) field patterns of near field and testing different concentration of AgNCs and thickness of dye layer. The enhancement was mainly triggered by the high electromagnetic field of AgNCs, the interaction between localized surface plasmons (LSP) and propagating surface plasmons (PSP) and the assistance of GO. This synergistic enhancement strategy provides a simple way to increase SPCE signal and enable develop a new fluorescence-based detection system.
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