An electrochemical and optical anion chemosensor based on tripodal tris(ferrocenylurea)

Minrui Li; Biao Wu; Chuandong Jia; Xiaojuan Huang; Qilong Zhao; Shijun Shao; Xiao Juan Yang

doi:10.1002/chem.201001696

An electrochemical and optical anion chemosensor based on tripodal tris(ferrocenylurea)

Minrui Li, Biao Wu^*, Chuandong Jia, Xiaojuan Huang, Qilong Zhao, Shijun Shao, Xiao Juan Yang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

A neutral tripodal tris(ferrocenylurea) anion receptor has been designed that can electrochemically and optically recognize sulfate and phosphate anions. The binding of the tetrahedral anion induced distinct cathodic shifts of the ferrocene/ferrocenium redox couple in chloroform, whereas the UV/Vis spectrum of the receptor showed an increase in the d-d transition band upon addition of sulfate ions. Furthermore, the anion complexes (TBA)₂·[SO ₄⊂L]·H₂O (1) and TBA[F⊂L] (2; TBA=tetrabutylammonium ion) were isolated. Crystal structural analyses showed that the receptor in the two 1:1 (host/guest) complexes encapsulated sulfate or fluoride ions in the tripodal cavity through multiple hydrogen bonds. ¹HaNMR spectroscopic and ESI mass-spectrometric analysis revealed strong sulfate and fluoride binding in solution.

Original language	English
Pages (from-to)	2272-2280
Number of pages	9
Journal	Chemistry - A European Journal
Volume	17
Issue number	7
DOIs	https://doi.org/10.1002/chem.201001696
Publication status	Published - 11 Feb 2011
Externally published	Yes

Keywords

anions
electrochemistry
ferrocene
receptors

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10.1002/chem.201001696

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title = "An electrochemical and optical anion chemosensor based on tripodal tris(ferrocenylurea)",

abstract = "A neutral tripodal tris(ferrocenylurea) anion receptor has been designed that can electrochemically and optically recognize sulfate and phosphate anions. The binding of the tetrahedral anion induced distinct cathodic shifts of the ferrocene/ferrocenium redox couple in chloroform, whereas the UV/Vis spectrum of the receptor showed an increase in the d-d transition band upon addition of sulfate ions. Furthermore, the anion complexes (TBA)2·[SO 4⊂L]·H2O (1) and TBA[F⊂L] (2; TBA=tetrabutylammonium ion) were isolated. Crystal structural analyses showed that the receptor in the two 1:1 (host/guest) complexes encapsulated sulfate or fluoride ions in the tripodal cavity through multiple hydrogen bonds. 1HaNMR spectroscopic and ESI mass-spectrometric analysis revealed strong sulfate and fluoride binding in solution.",

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AU - Li, Minrui

AU - Wu, Biao

AU - Jia, Chuandong

AU - Huang, Xiaojuan

AU - Zhao, Qilong

AU - Shao, Shijun

AU - Yang, Xiao Juan

PY - 2011/2/11

Y1 - 2011/2/11

N2 - A neutral tripodal tris(ferrocenylurea) anion receptor has been designed that can electrochemically and optically recognize sulfate and phosphate anions. The binding of the tetrahedral anion induced distinct cathodic shifts of the ferrocene/ferrocenium redox couple in chloroform, whereas the UV/Vis spectrum of the receptor showed an increase in the d-d transition band upon addition of sulfate ions. Furthermore, the anion complexes (TBA)2·[SO 4⊂L]·H2O (1) and TBA[F⊂L] (2; TBA=tetrabutylammonium ion) were isolated. Crystal structural analyses showed that the receptor in the two 1:1 (host/guest) complexes encapsulated sulfate or fluoride ions in the tripodal cavity through multiple hydrogen bonds. 1HaNMR spectroscopic and ESI mass-spectrometric analysis revealed strong sulfate and fluoride binding in solution.

AB - A neutral tripodal tris(ferrocenylurea) anion receptor has been designed that can electrochemically and optically recognize sulfate and phosphate anions. The binding of the tetrahedral anion induced distinct cathodic shifts of the ferrocene/ferrocenium redox couple in chloroform, whereas the UV/Vis spectrum of the receptor showed an increase in the d-d transition band upon addition of sulfate ions. Furthermore, the anion complexes (TBA)2·[SO 4⊂L]·H2O (1) and TBA[F⊂L] (2; TBA=tetrabutylammonium ion) were isolated. Crystal structural analyses showed that the receptor in the two 1:1 (host/guest) complexes encapsulated sulfate or fluoride ions in the tripodal cavity through multiple hydrogen bonds. 1HaNMR spectroscopic and ESI mass-spectrometric analysis revealed strong sulfate and fluoride binding in solution.

KW - anions

KW - electrochemistry

KW - ferrocene

KW - receptors

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ER -

An electrochemical and optical anion chemosensor based on tripodal tris(ferrocenylurea)

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Keywords

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