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Synthesis and Plasmonic Chiroptical Studies of Sodium Deoxycholate Modified Silver Nanoparticles

School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China
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Materials 2018, 11(8), 1291; https://doi.org/10.3390/ma11081291
Received: 20 June 2018 / Revised: 11 July 2018 / Accepted: 18 July 2018 / Published: 26 July 2018
Sodium deoxycholate modified silver nanoparticles prepared in the presence of sodium deoxycholate as a chiral inducer exhibit plasmonic circular dichroism (CD) signals. The plasmon-induced chirality arises from the presence of chiral molecules (sodium deoxycholate) on the surface of Ag nanoparticles, which transfer their chiral properties to the visible wavelength range due to the Coulomb interactions between the chiral molecules and plasmonic nanoparticles. The prepared Ag nanoparticles (NPs) exhibit distinct line shapes of plasmonic CD, which can be tailored by varying the pH values of the solutions. A mechanism was proposed to explain the generation of the distinct plasmonic CD shapes, which indicated that the arrangements of chiral molecules in the plasmonic hot spots between Ag NPs are crucial for the induced plasmonic CD. View Full-Text
Keywords: plasmonic chirality; Ag nanoparticles; sodium deoxycholate plasmonic chirality; Ag nanoparticles; sodium deoxycholate
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MDPI and ACS Style

Wang, J.; Fei, K.-X.; Yang, X.; Zhang, S.-S.; Peng, Y.-X. Synthesis and Plasmonic Chiroptical Studies of Sodium Deoxycholate Modified Silver Nanoparticles. Materials 2018, 11, 1291.

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