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In this paper, two channels of colorimetry and fluorescence \u2018turn\u2010on\u2019 fluorescent probe <jats:bold>1<\/jats:bold> (7\u2010hydroxy\u20108\u2010[(2\u2010hydroxy\u2010phenylimino)\u2010 methyl]\u20104\u2010methylbenzopyran\u20102\u2010one) for the simple yet highly selective detection of CN\u00af have been successfully designed and synthesized. Crystal features of probe <jats:bold>1<\/jats:bold> were defined using X\u2010ray single crystal diffractometry. Probe <jats:bold>1<\/jats:bold> showed a strongly colorimetric and fluorescence response to CN\u00af that induced obvious naked\u2010eye colour changes in aqueous solution (DMSO\/H<jats:sub>2<\/jats:sub>O, 3:1 v:v). In addition, probe <jats:bold>1<\/jats:bold> for CN\u00af detection displayed low detection limits of 3.91\u2009\u00d7\u200910<jats:sup>\u22128<\/jats:sup>\u2009M, which were significantly lower than the 1.9\u2009\u00d7\u200910<jats:sup>\u22126<\/jats:sup>\u2009M maximum level specified by the World Health Organization (WHO) for potable water. The sensing mechanism for probe <jats:bold>1<\/jats:bold> was attributed to the deprotonation process as shown by <jats:sup>1<\/jats:sup>H NMR titration. Moreover, based on the visible colorimetry and fluorescence change for probe <jats:bold>1<\/jats:bold> to CN\u00af, measurement was performed for simulated water samples containing CN\u00af. This study provides a broad prospect for solving other pollution problems and promoting the design of new fluorescent materials.<\/jats:p>","DOI":"10.1002\/bio.4058","type":"journal-article","created":{"date-parts":[[2021,4,21]],"date-time":"2021-04-21T17:25:25Z","timestamp":1619025925000},"page":"1306-1316","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["A dual\u2010channel \u2018turn\u2010on\u2019 fluorescent chemosensor for high selectivity and sensitivity detection of CN\u00af based on a coumarin\u2010Schiff base derivative in an aqueous system"],"prefix":"10.1002","volume":"36","author":[{"given":"Wen\u2010Min","family":"Ding","sequence":"first","affiliation":[{"name":"School of Chemical and Biological Engineering Lanzhou Jiaotong University  Lanzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ya","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Chemical and Biological Engineering Lanzhou Jiaotong University  Lanzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shu\u2010Zhen","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Chemical and Biological Engineering Lanzhou Jiaotong University  Lanzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Li","sequence":"additional","affiliation":[{"name":"School of Chemical and Biological Engineering Lanzhou Jiaotong University  Lanzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Chemical and Biological Engineering Lanzhou Jiaotong University  Lanzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8423-0580","authenticated-orcid":false,"given":"Yin\u2010Xia","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Chemical and Biological Engineering Lanzhou Jiaotong University  Lanzhou China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,5,6]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.molstruc.2020.129627"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.fct.2009.06.020"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.saa.2020.118496"},{"key":"e_1_2_6_5_1","first-page":"2097","volume":"11","author":"Chang J.","year":"2018","journal-title":"Chin. 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