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|a eng
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| 100 |
1 |
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|a Ray, Tyler R
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Quantitative characterization of the colloidal stability of metallic nanoparticles using UV-vis absorbance spectroscopy
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|c 2015
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|a Text
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|a ƒaComputermedien
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|a Date Completed 21.12.2015
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|a Date Revised 02.12.2018
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Plasmonic nanoparticles are used in a wide variety of applications over a broad array of fields including medicine, energy, and environmental chemistry. The continued successful development of this material class requires the accurate characterization of nanoparticle stability for a variety of solution-based conditions. Although many characterization methods exists, there is an absence of a unified, quantitative means for assessing the colloidal stability of plasmonic nanoparticles. We present the particle instability parameter (PIP) as a robust, quantitative, and generalizable characterization technique based on UV-vis absorbance spectroscopy to characterize colloidal instability. We validate PIP performance with both traditional and alternative characterization methods by measuring gold nanorod instability in response to different salt (NaCl) concentrations. We further measure gold nanorod stability as a function of solution pH, salt, and buffer (type and concentration), nanoparticle concentration, and concentration of free surfactant. Finally, these results are contextualized within the literature on gold nanorod stability to establish a standardized methodology for colloidal instability assessment
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|a Journal Article
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Lettiere, Bethany
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|a de Rutte, Joseph
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|a Pennathur, Sumita
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|t Langmuir : the ACS journal of surfaces and colloids
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