The {CuI} cluster bearing metal organic frameworks: crystal structures and fluorescence detecting performances towards cysteine and explosive molecules

Two {Cu 2 I 2 } cluster-bearing metal organic frameworks (MOFs) of {[Eu(CuI) 2 (INA) 3 DMF]·0.95DMF} n (Eu-CuI-INA) and {K[(CH 3 ) 2 NH 2 ]Sr 4 (INA) 2 (DMF) 2 {(Cu 2 I 2 ) 2 (INA) 8 }·2H 2 O} n (Sr-K-CuI-INA, HINA = isonicotinic acid, DMF = N , N -dimethyl formamide) were prepared and characterized...

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Published in:Dalton transactions : an international journal of inorganic chemistry 2024-01, Vol.53 (2), p.76-714
Main Authors: Jiang, Jiang, Li, Zi-Wei, Zhang, Zhi-Zhuan, Tan, Bin, Wu, Zhao-Feng, Huang, Xiao-Ying
Format: Article
Language:English
Subjects:
Clusters
Cysteine
Dimethylformamide
Explosives detection
Fluorescence
Metal-organic frameworks
Strontium
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Summary:Two {Cu 2 I 2 } cluster-bearing metal organic frameworks (MOFs) of {[Eu(CuI) 2 (INA) 3 DMF]·0.95DMF} n (Eu-CuI-INA) and {K[(CH 3 ) 2 NH 2 ]Sr 4 (INA) 2 (DMF) 2 {(Cu 2 I 2 ) 2 (INA) 8 }·2H 2 O} n (Sr-K-CuI-INA, HINA = isonicotinic acid, DMF = N , N -dimethyl formamide) were prepared and characterized in this work. Both materials feature a three-dimensional (3-D) structure, in which the {Cu 2 I 2 } clusters and Eu 3+ (or Sr 2+ ) metal ions are coordinated by INA − ligands with pyridine and carboxylic groups, respectively. Impressively, Sr-K-CuI-INA exhibits sensitive fluorescence sensing behaviors towards cysteine and nitro-bearing molecules, demonstrating potential FL sensing applications for bio and explosive molecules. This work would provide a good reference for designing fluorescent MOF probes containing CuI molecules. Two metal organic frameworks bearing {Cu 2 I 2 } cluster modules are presented, in which Sr-K-CuI-INA emits red luminescence and exhibits fluorescence sensing towards cysteine (Cys) and explosive molecules.
ISSN:1477-9226
1477-9234
DOI:10.1039/d3dt03363e