title: Ratiometric and highly selective fluorescent sensor for cadmium under physiological pH range: a new strategy to discriminate cadmium from zinc.
abstract: In a neutral aqueous environment, a new ratiometric Cd2+ fluorescent sensor 1a can successfully discriminate Cd2+ from Zn2+ by undergoing two different internal charge transfer (ICT) processes, and the high selectivity of sensor 1a to Cd2+ over some other metals was also observed. Moreover, through structure derivation and a series of NMR studies, the unique role of the 2-picolyl group (the part in red in the abstract graphic) in the sensor 1a-Cd2+ complexation was disclosed.
authors: State Key Laboratory of Fine Chemicals, DUT - KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology, Dalian 116012, China.
authors: Chunliang
authors: C
authors: Lu
authors: Zhaochao
authors: Z
authors: Xu
authors: Jingnan
authors: J
authors: Cui
authors: Rong
authors: R
authors: Zhang
authors: Xuhong
authors: X
authors: Qian
mesh_terms: D002104:Cadmium / Q000032:analysis*; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D002625:Chemistry, Organic / Q000379:methods; D005456:Fluorescent Dyes / Q000737:chemistry* / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D011725:Pyridines / Q000737:chemistry; D013050:Spectrometry, Fluorescence / Q000379:methods; D015032:Zinc / Q000032:analysis*
chemical_list: D005456:Fluorescent Dyes; D011725:Pyridines; D002104:Cadmium; D015032:Zinc