title: A reversible DNA-silver nanoclusters-based molecular fluorescence switch and its use for logic gate operation.
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.
authors.affiliation: Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, China.
authors.forename: Zhenzhen
authors.initials: Z
authors.lastname: Huang
authors.forename: Jinsong
authors.initials: J
authors.lastname: Ren
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Qu
mesh_terms: D004247:DNA / Q000737:chemistry*; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry*; D015335:Molecular Probes / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D015335:Molecular Probes; D012834:Silver; D004247:DNA