Quenching of R6G Fluorescence by Gold Nanoparticles of Various Particle Geometries

Kittler, Susann; Klemmed, Benjamin; Wolff, Thomas; Eychmüller, Alexander

doi:10.1515/zpch-2017-0979

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…Fluorescence quenching [ 1 – 4 ] and enhancement [ 5 – 7 ] are two contradictory phenomena caused by the interaction between optical molecules and metals or metallic nanoparticles. In the past few decades, a considerable amount of reports published are focusing on the fluorophores emission properties in the near field of metal nanoparticles [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold Nanoparticles

et al. 2021

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We investigate the fluorescence from submonolayer rhodamine 6G molecules near gold nanoparticles (NPs) at a well-controlled poly (methyl methacrylate) (PMMA) interval thickness from 1.5 to 21 nm. The plasmonic resonance peaks of gold NPs are tuned from 530 to 580 nm by the PMMA spacer of different thicknesses. Then, due to the plasmonic resonant excitation enhancement, the emission intensity of rhodamine 6G molecules at 562 nm is found to be enhanced and shows a decline as the PMMA spacer thickness increases. The variation of spectral intensity simulated by finite-difference time-domain method is consistent with the experimental results. Moreover, the lifetime results show the combined effects to rhodamine 6G fluorescence, which include the quenching effect, the barrier effect of PMMA as spacer layer and the attenuation effect of PMMA films.

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Section: Introductionmentioning

confidence: 99%

Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold Nanoparticles

et al. 2021

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High Adsorption Pearl‐Necklace‐Like Composite Membrane Based on Metal–Organic Framework for Heavy Metal Ion Removal

Hou

Zhou

Jin

et al. 2018

Part & Part Syst Charact

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The zeolitic imidazolate framework‐67 (ZIF‐67)‐based “pearl‐necklace‐like” composite membranes are prepared by in situ intergrown on the surface of 2‐methylimidazole/cellulose acetate (MIM/CA) electrospun nanofibers for the first time. With the aid of MIM, the ZIF‐67 nanocrystals successfully grow throughout the composites and attach to the fibers just like the pearls in necklace. The incubation time of ZIF‐67 has a significant influence on the structures and properties of the composites. And with an approximate saturation of ZIF‐67 nanocrystals, the integrated composites achieve a much higher surface area of 463.1 m2 g−1, which is as dozens of times as that of pure MIM/CA electrospun nanofibers (6.9 m2 g−1). In addition, the composites performed a high Cu(II) and Cr(VI) adsorption of 18.9 mg g−1 and 14.5 mg g−1, respectively. The adsorption data are well fitted with the pseudo‐second‐order kinetics. Moreover, adsorption mechanism is also discussed, and the electrostatic adsorption and ions exchange contribute to the high adsorption of Cu(II) and Cr(VI), and the existence of Cr(III) indicates that the Cr(VI) ions are partially reduced to Cr(III) during the adsorption. Therefore, the fabricated metal organic framework‐composite membrane with special “pearl‐necklace‐like” is a promising environmental material for removing heavy metal ions from water.

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Identify the Active Phase of Fe–CN Composites for Oxidation Removal of Rhodamine B with H₂O₂

Diao

Wang

et al. 2018

Zeitschrift Für Physikalische Chemie

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Fe-containing carbon nitrides (Fe–CN) prepared with various CN precursors, including dicyandiamide, melamine, guanidine hydrochloride and urea, were characterized by X-ray diffraction, thermal gravimetric analysis, N2 physisorption, transmission electron microscopy, X-ray photoelectron spectroscopy and atomic emission spectrometer measurements, and used as catalysts to catalyze the rhodamine B oxidation with H2O2 as oxidant. Characteristic results showed that Fe–CN exhibits different compositions, properties and catalytic performances if different CN precursors are used. The Fe–CN prepared from dicyandiamide contains mainly CN phase and certain amounts of surface Fe2O3 phase, exhibits the best activity; while that prepared from urea contains mainly Fe2O3 phase and few amounts of CN phase, exhibits the worst activity. Contrasting experiments conducted under light irradiation, with a supported Fe/CN_D catalyst, and that using a washed catalyst, suggested that the surface Fe2O3 is the active site of the reaction.

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Quenching of R6G Fluorescence by Gold Nanoparticles of Various Particle Geometries

Cited by 3 publications

References 34 publications

Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold Nanoparticles

Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold Nanoparticles

High Adsorption Pearl‐Necklace‐Like Composite Membrane Based on Metal–Organic Framework for Heavy Metal Ion Removal

Identify the Active Phase of Fe–CN Composites for Oxidation Removal of Rhodamine B with H₂O₂

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Quenching of R6G Fluorescence by Gold Nanoparticles of Various Particle Geometries

Cited by 3 publications

References 34 publications

Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold Nanoparticles

Distance-Dependent Plasmon-Enhanced Fluorescence of Submonolayer Rhodamine 6G by Gold Nanoparticles

High Adsorption Pearl‐Necklace‐Like Composite Membrane Based on Metal–Organic Framework for Heavy Metal Ion Removal

Identify the Active Phase of Fe–CN Composites for Oxidation Removal of Rhodamine B with H2O2

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Identify the Active Phase of Fe–CN Composites for Oxidation Removal of Rhodamine B with H₂O₂