Citation: Meirong HAN, Xiaoyang WEI, Sisi FENG, Yuting BAI. A zinc-based metal-organic framework for fluorescence detection of trace Cu²⁺[J]. Chinese Journal of Inorganic Chemistry, ;2024, 40(8): 1603-1614. doi: 10.11862/CJIC.20240150 shu

A zinc-based metal-organic framework for fluorescence detection of trace Cu²⁺

Meirong HAN ^1,, ,
Xiaoyang WEI ² ,
Sisi FENG ^2,, ,
Yuting BAI ³

1.
Shanxi Engineering Vocational College, Taiyuan 030009, China
2.
Institute of Molecular Science, Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry, Shanxi University, Taiyuan 030009, China
3.
Department of Energy Chemistry and Materials Engineering, Shanxi Institute of Energy, Jinzhong, Shanxi 030600, China

Corresponding author: Meirong HAN, ssfeng@sxu.edu.cn Sisi FENG, 1661659137@qq.com
Received Date: 29 April 2024
Revised Date: 28 June 2024

Figures(10)

A novel extremely effective fluorescent zinc organic framework probe [Zn₆(L)₃(2, 2'-bpy)₄]·2H₂O}_n (Zn - MOF) for Cu²⁺ was prepared by a hydro - solvothermal method, where H₄L=1, 4 - bis(3, 5 - dicarboxyphenoxy) benzene and 2, 2' -bpy=2, 2'-bipyridine. Its synthesis, structure, thermal stability, and fluorescence sensing properties are described in this paper. Zn -MOF is capable of identifying Cu²⁺ and shows good stability according to the fluorescence quenching method. The fluorescence intensity of the Zn-MOF has demonstrated an essential linear connection with the Cu²⁺ concentration in a concentration range of 0- 1.2 µmol·L^-1, with a low limit of detection (LOD) of 67.1 nmol·L^-1. More crucially, the obtained results indicating that Zn-MOF selectively recognizes Cu²⁺ through weak interactions are corroborated by a systematic analysis of X - ray photoelectron spectroscopy, inductively coupled plasma- mass spectrometry, powder X- ray diffraction, and infrared spectra. Furthermore, this Zn-MOF demonstrates strong regeneration capability in five consecutive cycles.
- 1, 4-bis(3, 5-dicarboxy phenoxy) benzene,
- crystal structure,
- fluorescent probe,
- copper(Ⅱ) ion
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A zinc-based metal-organic framework for fluorescence detection of trace Cu2+

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通讯作者: 陈斌, bchen63@163.com

A zinc-based metal-organic framework for fluorescence detection of trace Cu²⁺