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Here, Au@AgAu yolk–shell nanorods (YSNRs) with tunable plasmonic circular dichroism (PCD) responses are synthesized, for the first time, using chiral d‐ or l‐penicillamine. The concentration of chiral molecules and the nanogap size play key roles in the PCD signal of the YSNRs. Importantly, the PCD response could be regulated by changing the aspect ratio of gold nanorods, and the largest anisotropy...
On page 4662, a core‐satellite structure was fabricated by H. Kuang and co‐workers using partly‐complementary‐DNA‐functionalized Au NPs of 35 ± 2 nm and quantum dots (QDs) of 6 ± 1 nm. The fluorescence of the QD satellites was quenched after assembly with the Au core. In the presence of the target miR, the hairpin sequence of the core‐satellite assembly was destroyed by DNA hybridization, leading...
A high yield DNA‐driven gold‐quantum dot core–satellite is developed for miRNA detection in vitro and vivo. In the presence of the target miRNA, the DNA hairpin between core and satellite is ruined, resulting in the recovery of fluorescence. The limit of detection for miRNA‐21 detection in living cells reaches 296 copies per cell.
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