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  • Title: A reversible DNA-silver nanoclusters-based molecular fluorescence switch and its use for logic gate operation.
    Author: Huang Z, Ren J, Qu X.
    Journal: Mol Biosyst; 2012 Mar; 8(3):921-6. PubMed ID: 22286835.
    Abstract:
    Molecule-like silver nanoclusters (AgNCs) with few to tens of atoms are highly sensitive to the sequence and structure of DNA stabilizers. In this paper, a novel pH-triggered reversible molecular fluorescence switch is developed by taking advantage of the DNA-dependent fluorescence pH response of AgNCs. The DNA-AgNCs fluorescence switch simultaneously addresses concerns of simple construction strategy, efficient design and organic-solvent-free operation. Moreover, the excellent photostability and biocompatibility of AgNCs provide great potential for application of the DNA-AgNCs fluorescence switch in the development of functional molecular devices. Specifically, we apply the DNA-AgNCs fluorescence switch combined with the DNA sequence-dependent pH response pattern of AgNCs for construction of molecular logic gates.
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