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Interaction of Cr<jats:sup>3+<\/jats:sup> with probe <jats:bold>1<\/jats:bold> brings pyrene moieties close enough to have better aligned \u03c0\u2013\u03c0 stacking, thus enhancing the excimer peak many fold. On the other hand, the interaction of Fe<jats:sup>3+<\/jats:sup> with probe <jats:bold>1<\/jats:bold> brings forth a negligible difference in stacking, resulting in an insignificant change in fluorescence intensity. Exceptional selectivity of probe <jats:bold>1<\/jats:bold> with Cr<jats:sup>3+<\/jats:sup> over Fe<jats:sup>3+<\/jats:sup> and other metals has been confirmed by theoretical studies in addition to experimental results. Imaging of HeLa cells observed by confocal fluorescence microscopy reveals that probe <jats:bold>1<\/jats:bold> can be used to monitor Cr<jats:sup>3+<\/jats:sup> in live cells to map its subcellular distribution.<\/jats:p>","DOI":"10.1002\/chem.201501892","type":"journal-article","created":{"date-parts":[[2015,9,29]],"date-time":"2015-09-29T09:26:15Z","timestamp":1443518775000},"page":"16349-16353","source":"Crossref","is-referenced-by-count":23,"title":["Turn\u2010On Ratiometric Fluorescent Probe for Selective Discrimination of Cr<sup>3+<\/sup> from Fe<sup>3+<\/sup> in Aqueous Media for Living Cell Imaging"],"prefix":"10.1002","volume":"21","author":[{"given":"Lubna","family":"Rasheed","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammad","family":"Yousuf","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Il Seung","family":"Youn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Taeseung","family":"Yoon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kwang\u2010Youn","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Young\u2010Kyo","family":"Seo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Genggongwo","family":"Shi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muhammad","family":"Saleh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin\u2010Hoe","family":"Hur","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kwang S.","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2015,9,29]]},"reference":[{"key":"e_1_2_4_1_2","unstructured":"\u00a0"},{"key":"e_1_2_4_2_2","volume-title":"Bioinorganic Chemistry: Inorganic Elements in the Chemistry of Life","author":"Kaim W.","year":"1994"},{"key":"e_1_2_4_3_2","volume-title":"Perspectives on Bioinorganic Chemistry","author":"Hay R. 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