{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,24]],"date-time":"2026-03-24T13:54:49Z","timestamp":1774360489290,"version":"3.50.1"},"reference-count":57,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2013,11,4]],"date-time":"2013-11-04T00:00:00Z","timestamp":1383523200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemistry \u0097 An Asian Journal"],"published-print":{"date-parts":[[2014,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A new chemodosimeter based on pyridinium\u2010fused pyridinone iodide (<jats:bold>PI<\/jats:bold>) has been obtained through a \u201cclean reaction\u201d method. This compound can detect CN<jats:sup>\u2212<\/jats:sup> in aqueous solution with a high selectivity and rapid response. The detection of CN<jats:sup>\u2212<\/jats:sup> occurs through the nucleophilic attack of CN<jats:sup>\u2212<\/jats:sup> on the C\uf8feN bond, which induces the destruction of the \u03c0\u2010conjugation on the pyridinium ring. Support of this detection mechanism was obtained by <jats:sup>1<\/jats:sup>H\u2005NMR titration, HR\u2010MS, and DFT calculations. Upon the addition of 10 equivalents CN<jats:sup>\u2212<\/jats:sup> to a solution of <jats:bold>PI<\/jats:bold> in THF\/H<jats:sub>2<\/jats:sub>O (1:1, v\/v), a 57\u2010fold enhancement in fluorescence intensity was observed at the maximum emission wavelength of 457\u2005nm. Meanwhile, the maximum absorption wavelength was also blue\u2010shifted from 447\u2005nm to\u2005355 nm. Other common anions such as BF<jats:sub>4<\/jats:sub><jats:sup>\u2212<\/jats:sup>, PF<jats:sub>6<\/jats:sub><jats:sup>\u2212<\/jats:sup>, F<jats:sup>\u2212<\/jats:sup>, Cl<jats:sup>\u2212<\/jats:sup>, Br<jats:sup>\u2212<\/jats:sup>, I<jats:sup>\u2212<\/jats:sup>, H<jats:sub>2<\/jats:sub>PO<jats:sub>4<\/jats:sub><jats:sup>\u2212<\/jats:sup>, ClO<jats:sub>4<\/jats:sub><jats:sup>\u2212<\/jats:sup>, CH<jats:sub>3<\/jats:sub>COO<jats:sup>\u2212<\/jats:sup>, NO<jats:sub>2<\/jats:sub><jats:sup>\u2212<\/jats:sup>, N<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>, and SCN<jats:sup>\u2212<\/jats:sup> had little effect on the detection of CN<jats:sup>\u2212<\/jats:sup>. The response time of <jats:bold>PI<\/jats:bold> for CN<jats:sup>\u2212<\/jats:sup> was less than 5 seconds. The detection limit was calculated to be 5.4\u00d710<jats:sup>\u22128<\/jats:sup>\u2009<jats:sc>M<\/jats:sc>, which is lower than the maximum permission concentration in drinking water (1.9\u2005\u03bc<jats:sc>M<\/jats:sc>) set by the World Health Organization (WHO).<\/jats:p>","DOI":"10.1002\/asia.201301144","type":"journal-article","created":{"date-parts":[[2013,11,4]],"date-time":"2013-11-04T10:31:38Z","timestamp":1383561098000},"page":"121-125","source":"Crossref","is-referenced-by-count":32,"title":["Pyridinium\u2010Fused Pyridinone: A Novel \u201cTurn\u2010on\u201d Fluorescent Chemodosimeter for Cyanide"],"prefix":"10.1002","volume":"9","author":[{"given":"Junbo","family":"Li","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junkuo","family":"Gao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei\u2010Wei","family":"Xiong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pei\u2010Zhou","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huacheng","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanli","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qichun","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2013,11,4]]},"reference":[{"key":"e_1_2_4_1_2","unstructured":"\u00a0"},{"key":"e_1_2_4_2_2","doi-asserted-by":"publisher","DOI":"10.1039\/c2cc17270d"},{"key":"e_1_2_4_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/asia.201300208"},{"key":"e_1_2_4_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/chem.201102760"},{"key":"e_1_2_4_5_2","unstructured":"J. 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