Extinction, emission, and scattering spectroscopy of 5-50 nm citrate-coated gold nanoparticles: An argument for curvature effects on aggregation

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• 作者：Milad Rabbani Esfahani^a ; ^b ; Vasanta L. Pallem^a ; ^b ; Holly A. Stretz^b ; ^{hstretz@tntech.edu} ; Martha J.M. Wells^c ; ^{info@envirochemservices.net} ; ^{mjmwells@tntech.edu}
• 关键词：Gold nanoparticle ; Excitation-emission matrix (EEM) ; Citric acid stabilizer ; Dynamic light scattering ; Rayleigh resonance scattering
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：175
• 期：Complete
• 页码：100-109
• 全文大小：1174 K
• 卷排序：175

文摘

Complementary extinction, emission, and dynamic light scattering study Aggregation observed for 5–10 nm CT-GNPs but not for 30–50 nm CT-GNPs at pH 6.0–6.5 30–50 nm CT-GNPs behaved primarily as light scatterers. 5–10 nm CT-GNPs exhibited extinction/emission properties. Surface curvature affected citrate corona shielding of 5–10 nm CT-GNPs.