Dual signaling of Hg2+ ions by selective cleavage of thiophosphinated rhodol
- Authors
- Im, Hyun Gyu; Kim, Hong Yeong; Chang, Suk-Kyu
- Issue Date
- Feb-2014
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Hg2+ ion; N,N-diethylrhodol; Thiophosphinate; Reaction-based probe; Dual signaling; Deprotection
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.191, pp 854 - 859
- Pages
- 6
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 191
- Start Page
- 854
- End Page
- 859
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/12499
- DOI
- 10.1016/j.snb.2013.10.041
- ISSN
- 0925-4005
- Abstract
- Anew Hg2+-selective reaction-based probe based on thiophosphinated N,N-diethylrhodol was developed. Thiophosphinated rhodol showed prominent chromogenic and fluorogenic signaling for the Hg2+ ions. Signaling is due to the Hg2+-assisted hydrolysis of the thiophosphinated group to generate the rhodol fluorophore. An optical signaling with a detection limit of 13 nM, detectable with unaided eyes, was realized in a mixed aqueous environment. Selective Hg2+ signaling by thiophosphinated rhodol was not significantly affected by the presence of background common metal ions. Signaling was completed within 3 min and constant under the measuring conditions between pH 6.2 and 8.0. The Hg2+ signaling based on hydrolysis of the thiophosphinated rhodol was confirmed by H-1, C-13, and P-31 NMR spectroscopy. Application of the designed probe to practical samples of tap water and wastewater was also tested. (C) 2013 Elsevier B.V. All rights reserved.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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