Gold core-DNA-silver shell nanoparticles with intense plasmonic chiroptical activities
Gold core-DNA-silver shell nanoparticles with intense plasmonic chiroptical activities
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具有强烈等离子体手性光学活性的金核-DNA-银壳纳米粒子
DOI：
10.1002/adfm.201403161
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发表时间：
2015
影响因子：
19
通讯作者：
Xu Chuanlai
中科院分区：
文献类型：
--
作者：
Wu Xiaoling;Xu Liguang;Ma Wei;Liu Liqiang;Kuang Hua;Yan Wenjing;Wang Libing;Xu Chuanlai
首次报道了金核-DNA-银壳纳米粒子（NPs）的强等离子体手性光学活性，使用富含胞嘧啶的单链DNA作为指导银壳生长的模板。光学活性纳米粒子在420 nm处的各向异性因子达到1.93×10−2。它们的手性光学特性可能是由 DNA-等离子体相互作用引起的，并通过金核和银壳之间的强电磁耦合而显着增强。
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.