Chong Wu
A novel fluorescence “on–off–on” chemosensor for Hg²⁺ via a water-assistant blocking heavy atom effect
Wu, Chong; Zhao, Jiang-Lin; Jiang, Xue-Kai; Wang, Chuan-Zeng; Ni, Xin-Long; Zeng, Xi; Redshaw, Carl; Yamato, Takehiko
Authors
Jiang-Lin Zhao
Xue-Kai Jiang
Chuan-Zeng Wang
Xin-Long Ni
Xi Zeng
Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry
Takehiko Yamato
Abstract
Upper rim pyrene-functionalized hexahomotrioxacalix[3]arene L was synthesized via Click chemistry, and its fluorescence behaviors toward several common metal cations were investigated. L exhibited a significant fluorescence quenching response to Hg²⁺ in CH₃CN solution, which was unaffected by the coexistence of other competitive metal cations. Thus, L can be utilized as a highly selective and sensitive fluorescent chemosensor for Hg²⁺ with a detection limit in the nM level. Interestingly, the quenched fluorescence emission can be successfully revived upon the addition of water. In this process, the heavy atom effect of Hg²⁺ can be blocked by further coordination of a water molecule and resulted in the revival of the fluorescence emission of L/Hg²⁺ complex. Particularly, other polar solvents such as CH₃OH and CH₃CH₂OH also have the ability to revive the fluorescence emission of the L/Hg²⁺ complex, but on a much smaller scale than observed for H₂O. The heavy atom effect and blocking thereof were demonstrated within the same system by the use of a C₃-symmetric homooxacalix[3]arene scaffold. The present studies provided further evidence for the blocking heavy atom effect.
Citation
Wu, C., Zhao, J., Jiang, X., Wang, C., Ni, X., Zeng, X., …Yamato, T. (2016). A novel fluorescence “on–off–on” chemosensor for Hg²⁺ via a water-assistant blocking heavy atom effect. Dalton Transactions : an international journal of inorganic chemistry, 45(38), 14948-14953. https://doi.org/10.1039/c6dt02274j
Acceptance Date | Aug 16, 2016 |
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Online Publication Date | Aug 17, 2016 |
Publication Date | Aug 17, 2016 |
Deposit Date | Aug 23, 2016 |
Publicly Available Date | Aug 23, 2016 |
Journal | Dalton transactions |
Print ISSN | 1477-9226 |
Electronic ISSN | 1477-9234 |
Publisher | Royal Society of Chemistry |
Peer Reviewed | Peer Reviewed |
Volume | 45 |
Issue | 38 |
Pages | 14948-14953 |
DOI | https://doi.org/10.1039/c6dt02274j |
Keywords | Fluorescence, Heavy atom effect, Chemosensor, L/Hg²⁺ complex |
Public URL | https://hull-repository.worktribe.com/output/442453 |
Publisher URL | http://pubs.rsc.org/en/Content/ArticleLanding/2016/DT/C6DT02274J#!divAbstract |
Additional Information | : This document is Similarity Check deposited; : Supplementary Information; : The Royal Society of Chemistry has an exclusive publication licence for this journal; : Single-blind; : Received 8 June 2016; Accepted 16 August 2016; Accepted Manuscript published 17 August 2016; Advance Article published 23 August 2016; Version of Record published 27 September 2016 |
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