Skip to Content
Merck
  • Aspect ratio dependent fluorescence quenching of eosin Y by gold nanorods.

Aspect ratio dependent fluorescence quenching of eosin Y by gold nanorods.

Journal of nanoscience and nanotechnology (2014-04-18)
Guojun Weng, Jianjun Li, Li Zhang, Junwu Zhao
PMID24738353
ABSTRACT

Gold nanorods of different aspect ratios had been synthesized using seed mediated growth method. The formed gold nanorods had been characterized by the absorption and transmission electron microscopy (TEM) measurements. The obtained gold nanorods were used to study the quenched effect on fluorescence of Eosin Y. Experimental results revealed that Eosin Y molecules adsorbed on the metallic surfaces, suffering strong quenching of their fluorescence and the quenching efficiency was different for different aspect ratio. Using dielectric coated gold nanorods model, the probable mechanism of aspect ratio dependent quenching efficiency was obtained by numerical calculation based on fluorescence resonance energy transfer and quasi-static theory. The calculation results showed that the non-monotonic changing of fluorescence quenching was attributed to competing effects of aspect ratio and the dielectric constant of coated shell on surface plasmon resonance.

MATERIALS
Product Number
Brand
Product Description
GF20403638
Gold, insulated wire, 1m, conductor diameter 0.125mm, insulation thickness 0.014mm, polyester insulation, 99.99%
GF21945113
Gold, insulated wire, 2m, conductor diameter 0.025mm, insulation thickness 0.005mm, polyester insulation, 99.99%
GF54558175
Gold, insulated wire, 0.2m, conductor diameter 0.125mm, insulation thickness 0.016mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF38490767
Gold, insulated wire, 0.5m, conductor diameter 0.05mm, insulation thickness 0.009mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF11444611
Gold, insulated wire, 5m, conductor diameter 0.05mm, insulation thickness 0.007mm, polyimide insulation, 99.99%
GF49538469
Gold, insulated wire, 2m, conductor diameter 0.05mm, insulation thickness 0.007mm, polyester insulation, 99.99%
GF12231223
Gold, microleaf disks, 10mm, thinness 0.25μm, specific density 483μg/cm2, removable support, 99.99+%
GF77657574
Gold, sphere, 20pcs, diameter 0.5mm, 99.99%
GF19229115
Gold, microfoil, disks, 10mm, thinness 1.0μm, specific density 1932μg/cm2, permanent mylar 3.5μm support, 99.99+%
GF70223408
Gold, tube, 50mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, as drawn, 99.95%
GF31080899
Gold, rod, 25mm, diameter 2.0mm, as drawn, 99.95%
GF66135641
Gold, microleaf disks, 10mm, thinness 1.0μm, specific density 1932μg/cm2, removable support, 99.99+%
GF18244661
Gold, insulated wire, 2m, conductor diameter 0.05mm, insulation thickness 0.009mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF82838379
Gold, insulated wire, 0.5m, conductor diameter 0.05mm, insulation thickness 0.007mm, polyester insulation, 99.99%
GF42441230
Gold, tube, 200mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, as drawn, 99.95%
GF73271280
Gold, tube, 100mm, outside diameter 0.3mm, inside diameter 0.2mm, wall thickness 0.05mm, as drawn, 99.95%
GF87786040
Gold, microfoil, disks, 10mm, thinness 0.75μm, specific density 1449μg/cm2, permanent mylar 3.5μm support, 99.99+%
GF29872794
Gold, insulated wire, 1m, conductor diameter 0.125mm, insulation thickness 0.016mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF98989957
Gold, tube, 100mm, outside diameter 8mm, inside diameter 7.8mm, wall thickness 0.1mm, as drawn, 99.95%
GF30409253
Gold, rod, 100mm, diameter 1.6mm, as drawn, 99.95%
GF06766713
Gold, insulated wire, 5m, conductor diameter 0.125mm, insulation thickness 0.014mm, polyester insulation, 99.99%
GF36535563
Gold, rod, 25mm, diameter 5.0mm, as drawn, 99.95%
GF71627395
Gold, tube, 200mm, outside diameter 3.0mm, inside diameter 2.8mm, wall thickness 0.10mm, as drawn, 99.95%
GF11345958
Gold, insulated wire, 1m, conductor diameter 0.05mm, insulation thickness 0.009mm, PTFE (polytetrafluoroethylene) insulation, 99.99%
GF34898170
Gold, tube, 50mm, outside diameter 0.3mm, inside diameter 0.2mm, wall thickness 0.05mm, as drawn, 99.95%
GF55539524
Gold, tube, 100mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, as drawn, 99.95%
GF08843867
Gold, rod, 10mm, diameter 3.0mm, as drawn, 99.95%
GF58911206
Gold, tube, 200mm, outside diameter 0.3mm, inside diameter 0.2mm, wall thickness 0.05mm, as drawn, 99.95%
GF85112232
Gold, rod, 50mm, diameter 2.0mm, as drawn, 99.95%
GF32175569
Gold, insulated wire, 1m, conductor diameter 0.025mm, insulation thickness 0.005mm, polyester insulation, 99.99%