A water-stable metal-organic framework as a luminescent Fe3+ sensor under weak acidic and weak basic conditions

Yali Zhu; Xinhui Zhou; Liang Li; Yujian You; Wei Huang

doi:10.1007/s11426-017-9145-3

A water-stable metal-organic framework as a luminescent Fe³⁺ sensor under weak acidic and weak basic conditions

Yali Zhu, Xinhui Zhou, Liang Li, Yujian You, Wei Huang

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

21 Scopus citations

Abstract

A three-dimensional (3D) metal-organic framework (MOF) ZnL·0.5H₂O·0.75DMF (H₂L=9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid, DMF=N,N-dimethylformamide) has been synthesized under solvothermal condition. Crystal structure analysis shows that, in ZnL, each dinuclear Zn₂(COO)₂ unit is doubly-bridged to the other two by the carbazole moieties to form the 1D chains, which are further connected together by pyridine moieties to lead to the 3D framework. ZnL exhibits both high structural stability and good luminescent stability in water with the pH range of 4–10. ZnL displays the luminescent quenching response for Fe³⁺ in water with good linear correlation between the quenching efficiency and the concentration with K_sv of 10800 M⁻¹ in the low concentration range of 0–0.1 mM. Interestingly, it is observed that the sensing performance for Fe³⁺ is stable in the pH range of 4–9, enabling ZnL to detect Fe³⁺ ions in weak acidic and weak basic solutions.

Original language	English
Pages (from-to)	1581-1587
Number of pages	7
Journal	Science China Chemistry
Volume	60
Issue number	12
DOIs	https://doi.org/10.1007/s11426-017-9145-3
State	Published - 1 Dec 2017
Externally published	Yes

Keywords

9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid
Fe sensor
MOFs
pH
water stability

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10.1007/s11426-017-9145-3

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title = "A water-stable metal-organic framework as a luminescent Fe3+ sensor under weak acidic and weak basic conditions",

abstract = "A three-dimensional (3D) metal-organic framework (MOF) ZnL·0.5H2O·0.75DMF (H2L=9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid, DMF=N,N-dimethylformamide) has been synthesized under solvothermal condition. Crystal structure analysis shows that, in ZnL, each dinuclear Zn2(COO)2 unit is doubly-bridged to the other two by the carbazole moieties to form the 1D chains, which are further connected together by pyridine moieties to lead to the 3D framework. ZnL exhibits both high structural stability and good luminescent stability in water with the pH range of 4–10. ZnL displays the luminescent quenching response for Fe3+ in water with good linear correlation between the quenching efficiency and the concentration with Ksv of 10800 M−1 in the low concentration range of 0–0.1 mM. Interestingly, it is observed that the sensing performance for Fe3+ is stable in the pH range of 4–9, enabling ZnL to detect Fe3+ ions in weak acidic and weak basic solutions.",

keywords = "9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid, Fe sensor, MOFs, pH, water stability",

author = "Yali Zhu and Xinhui Zhou and Liang Li and Yujian You and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2017, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.",

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doi = "10.1007/s11426-017-9145-3",

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T1 - A water-stable metal-organic framework as a luminescent Fe3+ sensor under weak acidic and weak basic conditions

AU - Zhu, Yali

AU - Zhou, Xinhui

AU - Li, Liang

AU - You, Yujian

AU - Huang, Wei

PY - 2017/12/1

Y1 - 2017/12/1

N2 - A three-dimensional (3D) metal-organic framework (MOF) ZnL·0.5H2O·0.75DMF (H2L=9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid, DMF=N,N-dimethylformamide) has been synthesized under solvothermal condition. Crystal structure analysis shows that, in ZnL, each dinuclear Zn2(COO)2 unit is doubly-bridged to the other two by the carbazole moieties to form the 1D chains, which are further connected together by pyridine moieties to lead to the 3D framework. ZnL exhibits both high structural stability and good luminescent stability in water with the pH range of 4–10. ZnL displays the luminescent quenching response for Fe3+ in water with good linear correlation between the quenching efficiency and the concentration with Ksv of 10800 M−1 in the low concentration range of 0–0.1 mM. Interestingly, it is observed that the sensing performance for Fe3+ is stable in the pH range of 4–9, enabling ZnL to detect Fe3+ ions in weak acidic and weak basic solutions.

AB - A three-dimensional (3D) metal-organic framework (MOF) ZnL·0.5H2O·0.75DMF (H2L=9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid, DMF=N,N-dimethylformamide) has been synthesized under solvothermal condition. Crystal structure analysis shows that, in ZnL, each dinuclear Zn2(COO)2 unit is doubly-bridged to the other two by the carbazole moieties to form the 1D chains, which are further connected together by pyridine moieties to lead to the 3D framework. ZnL exhibits both high structural stability and good luminescent stability in water with the pH range of 4–10. ZnL displays the luminescent quenching response for Fe3+ in water with good linear correlation between the quenching efficiency and the concentration with Ksv of 10800 M−1 in the low concentration range of 0–0.1 mM. Interestingly, it is observed that the sensing performance for Fe3+ is stable in the pH range of 4–9, enabling ZnL to detect Fe3+ ions in weak acidic and weak basic solutions.

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KW - Fe sensor

KW - MOFs

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KW - water stability

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A water-stable metal-organic framework as a luminescent Fe³⁺ sensor under weak acidic and weak basic conditions

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