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A new ratiometric fluorescent chemodosimeter based on an ICT modulation for the detection of Hg2+
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- Hu, Jiwen (author)
- Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten,Tongji University, Peoples R China
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- Hu, Zhang-Jun (author)
- Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten
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- Liu, Sheng (author)
- Huaibei Normal University, Peoples R China
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- ELSEVIER SCIENCE SA, 2016
- 2016
- English.
- In: Sensors and actuators. B, Chemical. - : ELSEVIER SCIENCE SA. - 0925-4005 .- 1873-3077. ; 230, s. 639-644
- Journal article (peer-reviewed)
Abstract
Subject headings
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- We design and synthesize a new ratiometric fluorescent chemodosimeter (S1) for the selective and sensitive detection of Hg2+. Upon addition of Hg2+, the emission of the S1 exhibits a large bathochromic shift from 393 to 515 nm (up to 122 nm) which is ascribed to an intramolecular charge transfer process in the resultant. The Hg2+-induced dethioacetalization for sensing mechanism has been demonstrated by using high-performance liquid chromatography analysis of the sensing process. The interference experiments further demonstrate that S1 exhibits very high selectivity towards Hg2+ over other coexisting cations/anions. Subsequently, a good linearity of the concentrations of Hg2+ (0-15 mu M) vs the ratiometric signals (I-515/I-393) allows a fluorogenic method for the quantitative detection of Hg2+, with the limitation of detection determined to be 5.22 x 10(-7) M. (C) 2016 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Chemodosimeter; Ratiometric fluorescence; Mercury detection; Intramolecular charge transfer; Phenanthroimidazole
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Sensors and actuators. B, Chemical (Search for host publication in LIBRIS)
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- Hu, Jiwen
- Hu, Zhang-Jun
- Liu, Sheng
- Zhang, Qiong
- Gao, Hong-Wen
- Uvdal, Kajsa
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- NATURAL SCIENCES
- NATURAL SCIENCES
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- Linköping University
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