A Selective and Sensitive Phenanthroimidazole‐Based "Reactive" Ratiometric Sensor for Recognition of Hg2+ Ions in Aqueous Solution. Issue 12 (31st October 2014)

• Record Type: Journal Article
• Authors: Yan, Yuanyuan; Zhang, Rui; Yu, Xiang; Xu, Hui
• Is Part Of: ChemPlusChem. Volume 79:Issue 12(2014:Dec.)
• Page Start: 1676
• Page End: 1680
• Publication Date: 2014-10-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201402266
• Languages: English
• ISSNs: 2192-6506

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Based on specific reactivity of the vinyloxy group to Hg²⁺ ions, a new ratiometric phenanthroimidazole‐based fluorescent sensor, 2‐(2‐(vinyloxy)phenyl)‐1 <italic>H</italic>‐phenanthro[9, 10‐<italic>d</italic>]imidazole, is prepared. The selectivity of the probe toward Hg²⁺ ions is very high, and shows minimal interference from other commonly coexistent metal ions. The reactive stoichiometry of the probe with Hg²⁺ ion is 2:1. Its detection limit is evaluated and Hg²⁺ ions can be detected down to a lower limit of 2.5×10⁻⁸ <sc>M</sc>. Moreover, the Hg²⁺‐promoted selective hydrolysis of a vinyloxy group of the probe is further confirmed by ¹H NMR spectroscopy and mass spectrometry.</p> </abstract>