Abstract
AbstractHere, we construct a handedness‐dependent circular polarized light (CPL)‐activated chiral satellite assemblies formed from DNAzymes and spiny platinum modified with gold nanorods and upconversion nanoparticles (UCNPs), enabling the simultaneous quantitative analysis of multiple divalent metal ions in living cells. The chiral nanoprobes, in coordination with their corresponding divalent metal ions under 980 nm left circular polarized (LCP) light illumination, served as an in situ confocal bioimaging platform for the quantitation of the given intracellular metal ions. The limit of detection (LOD) of the chiral probes in living cells is 1.1 nmol/106 cells, 1.02 nmol/106 cells and 0.45 nmol/106 cells for Zn2+, Mg2+, and Cu2+, respectively.
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