Ratiometric and Highly Selective Fluorescent Sensor for Cadmium under Physiological pH Range: A New Strategy to Discriminate Cadmium from Zinc
- 24 March 2007
- journal article
- research article
- Published by American Chemical Society (ACS) in The Journal of Organic Chemistry
- Vol. 72 (9) , 3554-3557
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.Keywords
This publication has 23 references indexed in Scilit:
- Coumarin-Based Chemosensors for Zinc(II): Toward the Determination of the Design Algorithm for CHEF-Type and Ratiometric ProbesInorganic Chemistry, 2005
- A Naphthalimide Fluorescent Sensor for Zn2+ Based on Photo-induced Electron TransferChemistry Letters, 2004
- DPA-substituted coumarins as chemosensors for zinc(ii): modulation of the chemosensory characteristics by variation of the position of the chelate on the coumarinChemical Communications, 2004
- Cadmium carcinogenesisMutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2003
- ZP4, an Improved Neuronal Zn2+ Sensor of the Zinpyr FamilyJournal of the American Chemical Society, 2003
- 4,4′-Bis(dimethylamino)biphenyl containing binding sites. A new fluorescent subunit for cation sensingJ. Chem. Soc., Dalton Trans., 2002
- Searching for New Luminescent Sensors: Synthesis and Photophysical Properties of a Tripodal Ligand Incorporating the Dansyl Chromophore and of Its Metal ComplexesEuropean Journal of Inorganic Chemistry, 1999
- Optical fibre fluorosensor for cadmium with diethylaminoethyl-Sephadex as a substrateThe Analyst, 1995
- Chelatoselective fluorescence perturbation in anthrylazamacrocycle conjugate probes. Electrophilic aromatic cadmiationJournal of the American Chemical Society, 1990
- Chelation-enhanced fluorescence of anthrylazamacrocycle conjugate probes in aqueous solutionJournal of the American Chemical Society, 1990