title: A mercuric ensemble based on a cycloruthenated complex as a visual probe for iodide in aqueous solution.
abstract: A new water-soluble cycloruthenated complex Ru(bthiq)(dcbpy)2(+) (1, Hbthiq=1-(2-benzo[b]thiophenyl)isoquinoline, dcbpy=4,4'-dicarboxylate-2,2'-bipyridine) was designed and synthesized to form its mercuric ensemble (1-Hg(2+)) to achieve visual detection of iodide anions. The binding constant of 1-Hg(2+) is calculated to be 2.40×10(4)M(-1), which is lower than that of HgI2. Therefore, the addition of I(-) to the aqueous solution of 1-Hg(2+)lead to significant color changes from yellow to deep-red by the release of 1. The results showed that iodide anions could be easily detected by the naked eyes. The detection limit of iodide anion is calculated as 0.77μM. In addition, an easily-prepared test strip of 1-Hg(2+) was obtained successfully to detect iodide anions.
authors.affiliation: Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, China.
authors.forename: Xianlong
authors.initials: X
authors.lastname: Su
authors.affiliation: Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, China.
authors.forename: Lieping
authors.initials: L
authors.lastname: Guo
authors.affiliation: Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, China.
authors.forename: Yajuan
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education, South-Central University for Nationalities, Wuhan 430074, China. Electronic address: lixhchem@mail.scuec.edu.cn.
authors.forename: Xianghong
authors.initials: X
authors.lastname: Li
mesh_terms: D015082:2,2'-Dipyridyl / Q000737:chemistry; D003124:Colorimetry / Q000379:methods*; D056831:Coordination Complexes / Q000737:chemistry*; D007454:Iodides / Q000032:analysis* / Q000737:chemistry; D007546:Isoquinolines / Q000737:chemistry; D057230:Limit of Detection; D008628:Mercury / Q000737:chemistry*; D017669:Mercury Compounds / Q000737:chemistry; D011934:Reagent Strips / Q000032:analysis; D012428:Ruthenium / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods; D014867:Water / Q000032:analysis*
chemical_list: D056831:Coordination Complexes; D007454:Iodides; D007546:Isoquinolines; D017669:Mercury Compounds; D011934:Reagent Strips; D014867:Water; D015082:2,2'-Dipyridyl; D012428:Ruthenium; D008628:Mercury; C039109:isoquinoline; C025718:mercuric iodide, red
keywords: Chromogenic; Cycloruthenated complex; Iodide; Mercuric ensemble