title: i-Motif-modulated fluorescence detection of silver(I) with an ultrahigh specificity.
abstract: A novel Ag(+) sensor has been designed based on the mechanism that i-motif formation induced by Ag(+) was sensitively recognized by a cyanine dye. The sensor exhibited an over 130-16,000 fold selectivity toward Ag(+) than that toward other metal ions. This research not only provides a step forward toward the development of Ag(+) detection but also represents a new application for i-motif DNA.
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; Graduate University of the Chinese Academy of Sciences, Yuquan Road 19(A), Shijingshan District, Beijing 100049, PR China.
authors.forename: Yunhua
authors.initials: Y
authors.lastname: Shi
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address: hongxsun@iccas.ac.cn.
authors.forename: Hongxia
authors.initials: H
authors.lastname: Sun
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Junfeng
authors.initials: J
authors.lastname: Xiang
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Lijia
authors.initials: L
authors.lastname: Yu
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Qianfan
authors.initials: Q
authors.lastname: Yang
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Li
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Aijiao
authors.initials: A
authors.lastname: Guan
authors.affiliation: National Laboratory for Molecular Sciences, Center for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address: tangyl@iccas.ac.cn.
authors.forename: Yalin
authors.initials: Y
authors.lastname: Tang
keywords: Ag(+) detection; Cyanine dye; Fluorescence; Practical application; i-Motif DNA