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Ligand <jats:bold>L<\/jats:bold> undergoes a chelation\u2010enhanced fluorescence (CHEF) effect upon metal coordination in acetonitrile solution. In all three complexes investigated the metal cation is coordinatively unsaturated; thus, it can bind secondary ligands as anionic species. The crystal structure of [Zn<jats:bold>L<\/jats:bold>Cl](ClO<jats:sub>4<\/jats:sub>) is discussed. Cu<jats:sup>II<\/jats:sup> and Zn<jats:sup>II<\/jats:sup> complexes are quenched upon halide interaction, whereas the [Cd<jats:bold>L<\/jats:bold>]<jats:sup>2+<\/jats:sup> species behaves as an OFF\u2013ON sensor for halide anions in acetonitrile solution. The mechanism of the fluorescence response in the presence of the anion depends on the nature of the metal ion employed and has been studied by spectroscopic methods, such as NMR spectroscopy, UV\/Vis and fluorescence techniques and by computational methods. Subcellular localization experiments performed on HeLa cells show that <jats:bold>L<\/jats:bold> mainly localizes in spot\u2010like structures in a polarized portion of the cytosol that is occupied by the Golgi apparatus to give a green fluorescence signal.<\/jats:p>","DOI":"10.1002\/chem.201103135","type":"journal-article","created":{"date-parts":[[2012,2,23]],"date-time":"2012-02-23T06:23:13Z","timestamp":1329978193000},"page":"4274-4284","source":"Crossref","is-referenced-by-count":36,"title":["Multi\u2010Use NBD\u2010Based Tetra\u2010amino Macrocycle: Fluorescent Probe for Metals and Anions and Live Cell Marker"],"prefix":"10.1002","volume":"18","author":[{"given":"Stefano","family":"Amatori","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gianluca","family":"Ambrosi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mirco","family":"Fanelli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mauro","family":"Formica","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vieri","family":"Fusi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luca","family":"Giorgi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eleonora","family":"Macedi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mauro","family":"Micheloni","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Paola","family":"Paoli","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Roberto","family":"Pontellini","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrizia","family":"Rossi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Antonietta","family":"Varrese","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2012,2,23]]},"reference":[{"key":"e_1_2_6_1_2","doi-asserted-by":"crossref","first-page":"97","DOI":"10.1007\/b101164","volume":"255","author":"Davis F.","year":"2005","journal-title":"Top. 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