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The compound DPAC exhibits a highly selective response to Cu<jats:sup>2+<\/jats:sup> ions with a distinctly emission-quenching phenomenon. Moreover, the in situ formed complex DPAC-Cu<jats:sup>2+<\/jats:sup> was used for the detection of pyrophosphate (PPi). The binding manner of probe DPAC-Cu<jats:sup>2+<\/jats:sup> with PPi in 1\u2009:\u20091 stoichiometry was supported by the Benesi-Hildebrand fitting, ESI-MS and HPLC analysis. The linear range of PPi concentration was 1-4\u2009<jats:italic>\u03bc<\/jats:italic>M, and the detection limit was 0.53\u2009<jats:italic>\u03bc<\/jats:italic>M. The competing experiments illustrated that the probe DPAC-Cu<jats:sup>2+<\/jats:sup> had good sensitivity and selectivity for PPi than other anions, including ATP, ADP, AMP, and Pi in CH<jats:sub>3<\/jats:sub>CN\u2009:\u2009HEPES (3\u2009:\u20092, <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:mi>v<\/mml:mi><mml:mo>\/<\/mml:mo><mml:mi>v<\/mml:mi><\/mml:math>, <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mtext>pH<\/mml:mtext><mml:mo>=<\/mml:mo><mml:mn>7.20<\/mml:mn><\/mml:math>) buffer. Further, cell fluorescence imaging experiments indicated that the probe DPAC-Cu<jats:sup>2+<\/jats:sup> had a potential to be used to detect PPi in vivo.<\/jats:p>","DOI":"10.1155\/2019\/5349124","type":"journal-article","created":{"date-parts":[[2019,2,28]],"date-time":"2019-02-28T18:30:50Z","timestamp":1551378650000},"page":"1-8","source":"Crossref","is-referenced-by-count":2,"title":["Design and Synthesis of a Dinuclear Copper(II) Probe for Selective Fluorescence Sensing of Pyrophosphate"],"prefix":"10.1155","volume":"2019","author":[{"given":"Jinhe","family":"Xu","sequence":"first","affiliation":[{"name":"Xinxiang Key Laboratory of Forensic Science Evidence, School of Forensic Medicine, Xinxiang Medical University, Jinsui Road No. 601, Xinxiang, 453003 Henan Province, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jing","family":"Li","sequence":"additional","affiliation":[{"name":"Xinxiang Key Laboratory of Forensic Science Evidence, School of Forensic 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