title: A water-soluble colorimetric two-photon probe for discrimination of different palladium species and its application in bioimaging.
abstract: A novel water-soluble colorimetric and fluorescent palladium probe with excellent selectivity and sensitivity has been designed. Notably, based on a palladium triggered terminal allyl ether cleavage reaction, the probe could detect and discriminate Pd(0) and Pd(2+)/Pd(4+) in about 2.5 min at room temperature with a low detection limit (0.29 ppb) and significant colour change (from light yellow to pink). The probe could serve as an excellent "naked-eye" colorimetric probe for selective and quantitative determination of palladium in aqueous solutions. Moreover, it could be used as a two-photon palladium probe for in vitro/vivo and three-dimensional imaging with low cytotoxicity and autofluorescence.
authors.affiliation: Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province and State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China. liuws@lzu.edu.cn.
authors.forename: Weifang
authors.initials: W
authors.lastname: Luo
authors.forename: Weisheng
authors.initials: W
authors.lastname: Liu
mesh_terms: D002470:Cell Survival / Q000187:drug effects; D003124:Colorimetry; D060766:Drinking Water / Q000032:analysis; D005456:Fluorescent Dyes / Q000737:chemistry* / Q000494:pharmacology; D005561:Formates / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D021621:Imaging, Three-Dimensional; D008856:Microscopy, Fluorescence; D010078:Oxazines / Q000737:chemistry; D010165:Palladium / Q000032:analysis* / Q000737:chemistry; D017785:Photons; D012995:Solubility; D013057:Spectrum Analysis / Q000379:methods; D014867:Water / Q000737:chemistry
chemical_list: D060766:Drinking Water; D005456:Fluorescent Dyes; D005561:Formates; D010078:Oxazines; D014867:Water; D010165:Palladium; C014180:resorufin; C042113:allyl chloroformate