Gold Core‐DNA‐Silver Shell Nanoparticles with Intense Plasmonic Chiroptical Activities |
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| Authors: | Xiaoling Wu Liguang Xu Wei Ma Liqiang Liu Hua Kuang Wenjing Yan Libing Wang Chuanlai Xu |
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| Affiliation: | State Key Lab of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu Province, China |
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| Abstract: | The strong plasmonic chiroptical activities of gold core‐DNA‐silver shell nanoparticles (NPs) are reported for the first time, using cytosine‐rich single‐stranded DNA as the template for the guidance of silver shell growth. The anisotropy factor of the optically active NPs at 420 nm reaches 1.93 × 10?2. Their chiroptical properties are likely induced by the DNA–plasmon interaction and markedly amplified by the strong electromagnetic coupling between the gold core and silver shell. |
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| Keywords: | chiroptical activity DNA gold core‐DNA‐silver shell individual nanoparticles plasmonics |
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