Sequential recognition of zinc and pyrophosphate ions in a terpyridine-functionalized single nanochannel

Yuqi Zhang, Ru Zhou, Zhiju Zhao, Xiang-Yu Kong, Ganhua Xie, Qian Liu, Pei Li, Zhen Zhang, Kai Xiao, Zhengping Liu, Liping Wen, Lei Jiang

Research output: Contribution to journalArticleResearchpeer-review

8 Citations (Scopus)

Abstract

A highly selective recognition system for zinc(II) and pyrophosphate ions is constructed using a single conical nanochannel covalently functionalized with N'-(4-[(2,2':6',2''-terpyridine)-4-yl]benzyl)ethane-1,2-diamine (TPYD). The immobilized TPYD acts as a specific coordination site for Zn2+ to form TPYD-Zn2+ complexes in preference over other metal ions, and subsequently, the resulting Zn2+-coordinated nanochannel can be used as a selective recognition element for the pyrophosphate ion based on the coordination reaction between hydroxyl oxygen atoms of pyrophosphate and Zn2+. Ion recognition is monitored by measuring the current-voltage curves of the solutions. The ionic current of the TPYD-functionalized system at -2.0V undergoes a clear decrease after exposure to Zn2+ ions and is followed with an obvious increase after subsequent treatment with a pyrophosphate solution. The change of ionic current can be primarily attributed to the variation of charge density of the nanochannel. This functionalized single nanochannel might provide a simple and universal means to recognize other targets by modifying different functional molecules onto the inner surfaces of nanochannels.

Original languageEnglish
Pages (from-to)253-259
Number of pages7
JournalChemPhysChem
Volume18
Issue number2
DOIs
Publication statusPublished - 18 Jan 2017
Externally publishedYes

Keywords

  • Asymmetric nanochannels
  • Chemical functionalization
  • Pyrophosphate
  • Recognition
  • Zinc

Cite this

Zhang, Yuqi ; Zhou, Ru ; Zhao, Zhiju ; Kong, Xiang-Yu ; Xie, Ganhua ; Liu, Qian ; Li, Pei ; Zhang, Zhen ; Xiao, Kai ; Liu, Zhengping ; Wen, Liping ; Jiang, Lei. / Sequential recognition of zinc and pyrophosphate ions in a terpyridine-functionalized single nanochannel. In: ChemPhysChem. 2017 ; Vol. 18, No. 2. pp. 253-259.
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abstract = "A highly selective recognition system for zinc(II) and pyrophosphate ions is constructed using a single conical nanochannel covalently functionalized with N'-(4-[(2,2':6',2''-terpyridine)-4-yl]benzyl)ethane-1,2-diamine (TPYD). The immobilized TPYD acts as a specific coordination site for Zn2+ to form TPYD-Zn2+ complexes in preference over other metal ions, and subsequently, the resulting Zn2+-coordinated nanochannel can be used as a selective recognition element for the pyrophosphate ion based on the coordination reaction between hydroxyl oxygen atoms of pyrophosphate and Zn2+. Ion recognition is monitored by measuring the current-voltage curves of the solutions. The ionic current of the TPYD-functionalized system at -2.0V undergoes a clear decrease after exposure to Zn2+ ions and is followed with an obvious increase after subsequent treatment with a pyrophosphate solution. The change of ionic current can be primarily attributed to the variation of charge density of the nanochannel. This functionalized single nanochannel might provide a simple and universal means to recognize other targets by modifying different functional molecules onto the inner surfaces of nanochannels.",
keywords = "Asymmetric nanochannels, Chemical functionalization, Pyrophosphate, Recognition, Zinc",
author = "Yuqi Zhang and Ru Zhou and Zhiju Zhao and Xiang-Yu Kong and Ganhua Xie and Qian Liu and Pei Li and Zhen Zhang and Kai Xiao and Zhengping Liu and Liping Wen and Lei Jiang",
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Zhang, Y, Zhou, R, Zhao, Z, Kong, X-Y, Xie, G, Liu, Q, Li, P, Zhang, Z, Xiao, K, Liu, Z, Wen, L & Jiang, L 2017, 'Sequential recognition of zinc and pyrophosphate ions in a terpyridine-functionalized single nanochannel', ChemPhysChem, vol. 18, no. 2, pp. 253-259. https://doi.org/10.1002/cphc.201600923

Sequential recognition of zinc and pyrophosphate ions in a terpyridine-functionalized single nanochannel. / Zhang, Yuqi; Zhou, Ru; Zhao, Zhiju; Kong, Xiang-Yu; Xie, Ganhua; Liu, Qian; Li, Pei; Zhang, Zhen; Xiao, Kai; Liu, Zhengping; Wen, Liping; Jiang, Lei.

In: ChemPhysChem, Vol. 18, No. 2, 18.01.2017, p. 253-259.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Zhang, Yuqi

AU - Zhou, Ru

AU - Zhao, Zhiju

AU - Kong, Xiang-Yu

AU - Xie, Ganhua

AU - Liu, Qian

AU - Li, Pei

AU - Zhang, Zhen

AU - Xiao, Kai

AU - Liu, Zhengping

AU - Wen, Liping

AU - Jiang, Lei

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KW - Asymmetric nanochannels

KW - Chemical functionalization

KW - Pyrophosphate

KW - Recognition

KW - Zinc

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