title: A naked-eye and ratiometric near-infrared probe for palladium via modulation of a π-conjugated system of cyanines.
abstract: A ratiometric and colorimetric cyanine-based palladium sensor with an excellent selectivity and sensitivity has been designed. Notably, the modulation of π-conjugated electrons in cyanine dyes can result in a ratiometric fluorescence change with a large Stokes shift (270 nm), especially for realizing palladium detection in aqueous samples using indicator paper and in living cells by ratiometric mode. The limit of detection is as low as 0.3 ppb.
authors.affiliation: Shanghai Key Laboratory of Functional Materials Chemistry, Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, P. R. China. guozq@ecust.edu.cn whzhu@ecust.edu.cn.
authors.forename: Xiaohang
authors.initials: X
authors.lastname: Wang
authors.forename: Zhiqian
authors.initials: Z
authors.lastname: Guo
authors.forename: Shiqin
authors.initials: S
authors.lastname: Zhu
authors.forename: He
authors.initials: H
authors.lastname: Tian
authors.forename: Weihong
authors.initials: W
authors.lastname: Zhu
mesh_terms: D002232:Carbocyanines / Q000737:chemistry*; D002384:Catalysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D006367:HeLa Cells; D006801:Humans; D018613:Microscopy, Confocal; D010165:Palladium / Q000032:analysis*; D019265:Spectroscopy, Near-Infrared
chemical_list: D002232:Carbocyanines; D005456:Fluorescent Dyes; D010165:Palladium