Metal‐organic Frameworks Containing Homophthalic Acid and Imidazole Ligands as Fluorescent Probes for the Detection of Fe 3+ , CrO 4 2− , and Cr 2 O 7 2− Species in Aqueous Solutions
Year: 2025
Type: article
Abstract: In this paper, a new metal‐organic framework, namely, [Zn(LBIX)(HPA) 2 ] n ( 1 ) (LBIX = 4,4′‐bis((1H‐imidazol‐1‐yl)methyl)‐1,1′‐biphenyl, H 2 HPA = Homophthalic acid) was synthesized and characterized, which can be used as a fluorescent probe for the detection of harmful heavy metals in water. The single‐crystal structure results indicated that complex 1 is composed of two‐dimensional planar structures, which are connected by intermolecular hydrogen bonding and stacked to form a 3D supramolecular structure. The fluorescence properties and potential for detecting heavy metal ions in water were also studied by anion and cationic sensing experiments. Complex 1 exhibited low detection limit (LOD) in Fe 3+ , CrO 4 2− , and Cr 2 O 7 2− fluorescence sensing experiments. Complex 1 also has good recyclability and stability in the detection of analytes. The possible mechanism of fluorescence burst was analyzed and the selectivity and sensitivity of complex 1 were further evaluated in competition experiments.
Source: ChemistrySelect
Authors: Yun Cao, Ke‐Xin Yuan, Shuo Zhou, Yan Wang
Institution: Anqing Normal University
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: bronze
Awards: G2894752520, G3462688476
OpenAlex ID: W4407594170