title: Selective fluorogenic and chromogenic probe for detection of silver ions and silver nanoparticles in aqueous media.
abstract: A novel rhodamine-based fluorogenic and chromogenic probe for Ag(+) ions in aqueous media is developed, which can be also used for the detection of AgNPs. The sensing mechanism is based on irreversible tandem ring-opening and -forming processes promoted by Ag(+)-coordination to the iodide of the probe, which is accompanied by both color and turn-on type fluorescence changes. The probe shows remarkably high selectivity over other metal ions and detects silver ions up to 14 ppb.
authors.affiliation: Department of Chemistry and the Center for Electro-Photo Behaviors in Advanced Molecular Systems, POSTECH, San 31, Hyoja-dong, Pohang, 790-784, Republic of Korea.
authors.forename: Amrita
authors.initials: A
authors.lastname: Chatterjee
authors.forename: Mithun
authors.initials: M
authors.lastname: Santra
authors.forename: Nayoun
authors.initials: N
authors.lastname: Won
authors.forename: Sungjee
authors.initials: S
authors.lastname: Kim
authors.forename: Jae Kyung
authors.initials: JK
authors.lastname: Kim
authors.forename: Seung Bin
authors.initials: SB
authors.lastname: Kim
authors.forename: Kyo Han
authors.initials: KH
authors.lastname: Ahn
mesh_terms: D002414:Cations, Monovalent; D005456:Fluorescent Dyes / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000032:analysis* / Q000737:chemistry; D012235:Rhodamines / Q000737:chemistry*; D012680:Sensitivity and Specificity; D012834:Silver / Q000032:analysis* / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000379:methods; D014867:Water / Q000737:chemistry*
chemical_list: D002414:Cations, Monovalent; D005456:Fluorescent Dyes; D012235:Rhodamines; D014867:Water; D012834:Silver; C029773:rhodamine B