{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,11]],"date-time":"2026-09-11T13:43:07Z","timestamp":1789134187777,"version":"build-2803163510"},"reference-count":63,"publisher":"Wiley","issue":"41","license":[{"start":{"date-parts":[[2019,6,5]],"date-time":"2019-06-05T00:00:00Z","timestamp":1559692800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001839","name":"University Grants Committee","doi-asserted-by":"publisher","award":["GRF No. 18300415"],"award-info":[{"award-number":["GRF No. 18300415"]}],"id":[{"id":"10.13039\/501100001839","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["chemistry-europe.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Chemistry A European J"],"published-print":{"date-parts":[[2019,7,22]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Herein, a catalytic chemosensing assay (CCA), based on a bimetallic complex, [Ru<jats:sup>II<\/jats:sup>(bpy)<jats:sub>2<\/jats:sub>(CN)<jats:sub>2<\/jats:sub>]<jats:sub>2<\/jats:sub>(Cu<jats:sup>I<\/jats:sup>I)<jats:sub>2<\/jats:sub> (bpy=2,2\u2032\u2010bipyridine), is described. This complex integrates a task\u2010specific catalyst (Cu<jats:sup>I<\/jats:sup>\u2010catalyst) and a signaling unit ([Ru<jats:sup>II<\/jats:sup>(bpy)<jats:sub>2<\/jats:sub>(CN)<jats:sub>2<\/jats:sub>]) to specifically hydrolyze methyl parathion, a highly toxic organophosphate (OP) pesticide. The bimetallic complex catalyzed the hydrolysis of the phosphate ester to generate <jats:italic>o<\/jats:italic>,<jats:italic>o<\/jats:italic>\u2010dimethyl thiophosphate (DTP) anion and 4\u2010nitrophenolate. Intrinsically, 4\u2010nitrophenolate absorbed UV\/Vis light at <jats:italic>\u03bb<\/jats:italic><jats:sub>max<\/jats:sub>=400\u2005nm, creating the first level of the chemosensing signal. DTP interacted with the original complex to displace the chromophore, [Ru<jats:sup>II<\/jats:sup>(bpy)<jats:sub>2<\/jats:sub>(CN)<jats:sub>2<\/jats:sub>], which was monitored by spectrofluorometry; this was classified as the second level of chemosensing signal. By integrating both spectroscopic and spectrofluorometric signals with a simple AND logic gate, only methyl parathion was able to provide a positive response. Other aromatic and aliphatic OP pesticides (diazinon, fenthion, meviphos, terbufos, and phosalone) and 4\u2010nitrophenyl acetate provided negative responses. Furthermore, owing to the metal\u2010catalyzed hydrolysis of methyl parathion, the CCA system led to the detoxification of the pesticide. The CCA system also demonstrated its catalytic chemosensing properties in the detection of methyl parathion in real samples, including tap water, river water, and underground water.<\/jats:p>","DOI":"10.1002\/chem.201901656","type":"journal-article","created":{"date-parts":[[2019,4,24]],"date-time":"2019-04-24T10:35:08Z","timestamp":1556102108000},"page":"9643-9649","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Catalytic Chemosensing Assay for Selective Detection of Methyl Parathion Organophosphate Pesticide"],"prefix":"10.1002","volume":"25","author":[{"given":"Anxun","family":"Zheng","sequence":"first","affiliation":[{"name":"Department of Science and Environmental Studies, The Education University of Hong Kong Southwest University  10 Lo Ping Road, Tai Po Hong Kong SAR, China and College of, Chemistry and Chemical Engineering Chong Qing P. R. 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