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21 February 2020 Universal and quantitative measure of colloidal stability of plasmonic nanoparticles via comprehensive stability parameter method
Wei-Kuan Lin, Somin Eunice Lee
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Proceedings Volume 11255, Colloidal Nanoparticles for Biomedical Applications XV; 112550H (2020) https://doi.org/10.1117/12.2546244
Event: SPIE BiOS, 2020, San Francisco, California, United States
Abstract
Plasmonic nanoparticles are expected to impact various fields, such as chemical analysis, superresolution imaging, and therapeutics. However, since plasmonic nanoparticles are known to be prone to aggregation, widespread use of plasmonic nanoparticles is still limited. While many methods have been proposed to enhance colloidal stability, a universal method to comprehensively detect stability is still lacking. We present a new comprehensive stability parameter (CSP) as a robust and universal method to quantify stability. Unlike other methods, CSP utilizes the entire UV-Vis spectrum to evaluate the aggregation and to avoid potential biasing issues by only looking at a single parameter. We quantitatively analyzed the colloidal stability of plasmonic particles with different surface coatings using CSP. This work establishes a standardized quantification method which can be used in the future nanoparticle applications.
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Wei-Kuan Lin and Somin Eunice Lee "Universal and quantitative measure of colloidal stability of plasmonic nanoparticles via comprehensive stability parameter method", Proc. SPIE 11255, Colloidal Nanoparticles for Biomedical Applications XV, 112550H (21 February 2020); https://doi.org/10.1117/12.2546244
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KEYWORDS
Nanoparticles
Plasmonics
Gold
Nanorods
Absorbance
Optical properties
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