Selective Hg2+ signaling via dithiane to aldehyde conversion of an ESIPT fluorophore
- Authors
- Chang, In Jung; Hwang, Keum Saem; Chang, Suk-Kyu
- Issue Date
- Feb-2017
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Hg2+ ions; Dithiane deprotection; ESIPT fluorophore; Cu2+ masking; 2-Hydroxyphenyl benzothiazole; Smartphone
- Citation
- DYES AND PIGMENTS, v.137, pp 69 - 74
- Pages
- 6
- Journal Title
- DYES AND PIGMENTS
- Volume
- 137
- Start Page
- 69
- End Page
- 74
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4819
- DOI
- 10.1016/j.dyepig.2016.09.058
- ISSN
- 0143-7208
1873-3743
- Abstract
- We herein report the development of a simple structured reaction-based probe for the fluorescence signaling of Hg2+ ions using a dithiane derivative of an excited-state intramolecular proton transfer (ESIPT) dye. The designed probe exhibited prominent fluorescence signaling behavior towards Hg2+ ions by the deprotection of its dithiane function to an aldehyde in an aqueous acetonitrile solution. The interfering response of Cu2+ ions was efficiently removed using citrate as both a masking agent and a buffer. Thus, the use of a citrate buffer allowed exclusive Hg2+-selective signaling to be obtaibed in the presence of common environmentally relevant transition metal ions. Signaling of the Hg2+ ions was complete within 15 min after sample preparation, and a detection limit of 2.0 x 10(-7) M was estimated. As a practical application of the designed probe, the detection of Hg2+ ions in simulated wastewater was tested using-a smartphone as a portable signal-capturing device. (C) 2016 Elsevier Ltd. All rights reserved.
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Collections - College of Natural Sciences > Department of Chemistry > 1. Journal Articles
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