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Synthesis and characterization of si...

Butcher, Emily Rebecca.

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Synthesis and characterization of silica/silver multilayer nanoparticles and their application in surface enhanced spectroscopy.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Synthesis and characterization of silica/silver multilayer nanoparticles and their application in surface enhanced spectroscopy./
作者:	Butcher, Emily Rebecca.
面頁冊數:	73 p.
附註:	Source: Masters Abstracts International, Volume: 54-04.
Contained By:	Masters Abstracts International54-04(E).
標題:	Chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1587331
ISBN:	9781321710670

Synthesis and characterization of silica/silver multilayer nanoparticles and their application in surface enhanced spectroscopy.
Butcher, Emily Rebecca.

Synthesis and characterization of silica/silver multilayer nanoparticles and their application in surface enhanced spectroscopy. - 73 p.

Source: Masters Abstracts International, Volume: 54-04.

Thesis (M.S.)--Western Carolina University, 2015.

This item is not available from ProQuest Dissertations & Theses.

This research is focused on determining the most effective silver shell growth method for multilayered metallic nanoparticles, and determining the plausibility of using embedded [Ru(bpy)3]2+ as an internal standard for surface enhanced Raman spectroscopy. In the surface study, silica particles were functionalized with (3-aminopropyl)trimethoxysilane followed by a variety of seeding techniques to complete the silver shell. This study revealed that the optimum synthesis method prior to the hydrogen reduction of the silver shell utilized a tin treatment followed by a silver (I) oxide soak, resulting in the best surface coverage. Likewise extinction analysis revealed that this type of particle absorbs the most light, which likely is important for surface enhanced spectroscopy.

ISBN: 9781321710670Subjects--Topical Terms:

516420
Chemistry.

Synthesis and characterization of silica/silver multilayer nanoparticles and their application in surface enhanced spectroscopy.
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245 1 0 $a Synthesis and characterization of silica/silver multilayer nanoparticles and their application in surface enhanced spectroscopy.
300 $a 73 p.
500 $a Source: Masters Abstracts International, Volume: 54-04.
500 $a Adviser: David D. Evanoff.
502 $a Thesis (M.S.)--Western Carolina University, 2015.
506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a This research is focused on determining the most effective silver shell growth method for multilayered metallic nanoparticles, and determining the plausibility of using embedded [Ru(bpy)3]2+ as an internal standard for surface enhanced Raman spectroscopy. In the surface study, silica particles were functionalized with (3-aminopropyl)trimethoxysilane followed by a variety of seeding techniques to complete the silver shell. This study revealed that the optimum synthesis method prior to the hydrogen reduction of the silver shell utilized a tin treatment followed by a silver (I) oxide soak, resulting in the best surface coverage. Likewise extinction analysis revealed that this type of particle absorbs the most light, which likely is important for surface enhanced spectroscopy.
520 $a In the second part of the study, a procedure is reported for the synthesis of multilayered metallic nanoparticles with a dye molecule ([Ru(bpy) 3]2+) embedded in the dielectric layer separating the two silver layers. Raman spectroscopy was used to prove the success of embedding the dye molecule into the spacer layer. Fluorescence, extinction, absorption, and scattering data were used to determine that, as the shell is synthesized, it begins to absorb more of the excitation light. This absorption is a problem because [Ru(bpy)3]2+ has a low quantum yield of only 7.2% and the signal is easily extinguished as the shell becomes thicker. Finally, the particles with the embedded dye molecule were used for a preliminary test to determine their usefulness as an internal standard for surface enhanced Raman scattering. This preliminary study revealed that it is possible to detect [Ru(bpy)3]2+ using the 457.9 nm laser and use a 632.8 nm laser line to detect a 500 nM crystal violet solution. 500 nM is below the detection of crystal violet only using Raman spectroscopy.
590 $a School code: 1373.
650 4 $a Chemistry. $3 516420
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