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Uniform and reproducible plasmon-enhanced fluorescence substrate based on PMMA-coated, large-area Au@Ag nanorod arrays 被引量:4

Uniform and reproducible plasmon-enhanced fluorescence substrate based on PMMA-coated, large-area Au@Ag nanorod arrays
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摘要 Here we describe a plasmon-enhanced fluorescence substrate based on poly(methyl methacrylate) (PMMA)-coated, large-area Au@Ag nanorod arrays. The use of a PMMA medium enables precise control of the competition between enhancing and quenching processes as a function of the distance between Au@Ag nanorods and dye molecules. At the optimal PMMA layer thickness of 56 nm (for which the distance between nanopartides and dye molecules is 16 nm), a maximum enhancement of fluorescence of up to N 27 times is measured. The competition mechanism between enhancing and quenching processes depends on the thickness of the PMMA layer, which has been confirmed by consistent experimental and theoretical modeling results. Notab136 the micropatterned metal-enhanced fluorescence (MEF) substrate exhibits high uniformity and reproducibility. The simple spin-coating process described herein provides an attractive, scalable, and low-cost strategy to produce uniform and reproducible large-area MEF substrates that can potentially be used in many fields, such as biochips, diagnostics, and photonics. Here we describe a plasmon-enhanced fluorescence substrate based on poly(methyl methacrylate) (PMMA)-coated, large-area Au@Ag nanorod arrays. The use of a PMMA medium enables precise control of the competition between enhancing and quenching processes as a function of the distance between Au@Ag nanorods and dye molecules. At the optimal PMMA layer thickness of 56 nm (for which the distance between nanopartides and dye molecules is 16 nm), a maximum enhancement of fluorescence of up to N 27 times is measured. The competition mechanism between enhancing and quenching processes depends on the thickness of the PMMA layer, which has been confirmed by consistent experimental and theoretical modeling results. Notab136 the micropatterned metal-enhanced fluorescence (MEF) substrate exhibits high uniformity and reproducibility. The simple spin-coating process described herein provides an attractive, scalable, and low-cost strategy to produce uniform and reproducible large-area MEF substrates that can potentially be used in many fields, such as biochips, diagnostics, and photonics.
出处 《Nano Research》 SCIE EI CAS CSCD 2018年第2期953-965,共13页 纳米研究(英文版)
关键词 Au@Ag nanorod arrays metal-enhancedfluorescence (MEF) poly(methyl methacrylate)(PMMA) layer micro patterning localized surface plasmonresonance (LSPR) Au@Ag nanorod arrays,metal-enhancedfluorescence (MEF),poly(methyl methacrylate)(PMMA) layer,micro patterning,localized surface plasmonresonance (LSPR)
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