AI Article Synopsis
- Ligand L is a fluorescent sensor designed for detecting metal ions such as Cu(II), Zn(II), and Cd(II), and can also sense halides in solution.
- It can permeate cellular membranes and emits fluorescence inside cells, allowing for real-time detection of these metal ions.
- The study discusses the formation of dinuclear complexes with a specific stoichiometry and crystal structure, highlighting the ability of the Zn(II) complex to act as an OFF-ON sensor for fluoride and chloride ions.
Article Abstract
Ligand L (2,6-bis{[7-(7-nitrobenzo[1,2,5]oxadiazole-4-yl)-3,10-dimethyl-1,4,7,10-tetraazacyclododeca-1-yl]methyl}phenol) is a fluorescent sensor that is useful for detecting Cu(II), Zn(II), and Cd(II). Some of the complexes formed are able to sense the presence of halides in solution. L passes through the cellular membrane, becoming fluorescent inside cells. The H(-1)L- species is able to form dinuclear complexes with [M(2)H(-1)L]3+ stoichiometry with Cu(II), Zn(II), and Cd(II) ions, experiencing a CHEF effect upon metal coordination in an acetonitrile/water 95:5 (v/v) solution. In all three of the complexes investigated, the metal cations are coordinatively unsaturated and can therefore bind secondary ligands as anionic species. The crystal structure of [Cd(2)(H(-1)L)Cl(2)](ClO(4))·4H(2)O is discussed. The Zn(II) complex behaves as an OFF-ON sensor for fluoride and chloride anions.
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| http://dx.doi.org/10.1021/ic5001649 | DOI Listing |
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