2018
DOI: 10.1088/1361-6463/aabc78
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Resonant energy transfer and trace-level sensing using branched Ag-rod-supported carbon dots

Abstract: We report on the resonant energy transfer in branched Ag rod-supported carbon dots (C-dots) and its applications for the trace-level sensing of highly reactive oxygen species and organic pollutants based on surface plasmon enhanced energy transfer (SPEET) and surface enhanced Raman spectroscopy (SERS). The branched morphology of Ag is found to significantly enhance visible light absorption and thus increases the spectral overlap with C-dot emission. In addition, branched morphology results in the formation of … Show more

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Cited by 5 publications
(6 citation statements)
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“…In general, the final nanocomposite is composed by metal nanoparticles decorated with carbon dots (see Fig. 4a [32]] and b [56]) in which the synthesis of silver nanorods and the catalytic activity of graphene layers on the production of nanostructures are respectively explored.…”
Section: Synthesis Of Composites Carbon Dots/metal Nanostructuresmentioning
confidence: 99%
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“…In general, the final nanocomposite is composed by metal nanoparticles decorated with carbon dots (see Fig. 4a [32]] and b [56]) in which the synthesis of silver nanorods and the catalytic activity of graphene layers on the production of nanostructures are respectively explored.…”
Section: Synthesis Of Composites Carbon Dots/metal Nanostructuresmentioning
confidence: 99%
“…To circumvent these limitations, heteroatom-based structures have been considered a promising strategy to reach superior performance in terms of EF value. Based on this strategy, it is reported values of 10 7 for N-doped carbon dots-Au@AgNPs core-shell structures [69], while enhancement factor in order of 10 8 is observed for branched silver-supported carbon dots [32] and EF values in order of 10 6 -10 7 for systems composed by freestanding Si nanowires decorated with Au/graphene nanoparticles that favor the creation of "multiple hot spots" [70]. These results confirm that improved SERS response for carbon dots-based systems depends on the combination of electromagnetic and chemical mechanisms [70] that can be explored from noble metal arrays, porous substrates and by the interaction of these structures with substrates, allowing the formation of hot spots at different scales and levels.…”
Section: Performance In the Detection Of Analytesmentioning
confidence: 99%
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“…20,21 Recently, metal nanoparticles have become extremely signicant in biosensing research owing to the generation of surface plasmon resonances (SPR). [22][23][24][25][26] Due to the high sensitivity of SPR towards local environmental changes, it serves as a feasible candidate for biosensing and imaging applications. 27,28 Apart from high sensitivity, SPR based sensing provides real-time and label-free sensing of biomolecules.…”
mentioning
confidence: 99%