Abstract
Metal–organic frameworks (MOFs) are a unique class of porous materials formed by connecting metal ions or clusters within the organic ligands. They have attracted substantial attention in various fields, including drug delivery and their potential in addressing microbial infections. In this particular research, we accomplished the successful encapsulation of 4-chloro-3-formylcoumarin (CFC) within potassium-based perylene tetracarboxylic acid (K4PTC) MOFs. Our investigation involved characterizing this process using proton chemical shifts, affirming the effective incorporation of CFC molecules within the cavities of the MOFs. Moreover, the differences between MOFs that had been loaded with CFC and those that remained unloaded are strikingly evident in scanning electron microscopy (SEM) images. These distinctions allowed us to visually confirm the successful loading of CFC into the MOFs. To evaluate the MOFs' antibacterial properties, we conducted experiments involving two human pathogenic microbes. The results revealed significant zones of growth inhibition corresponding to the concentration of MOFs used, underscoring their potent antibacterial activity. In addition to these assessments, we conducted a biofilm assay to gauge the MOFs' effectiveness in countering the formation of biofilms by these pathogens.
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The datasets used or analyzed during the current study are available from the corresponding author upon reasonable request.
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Acknowledgements
This research was supported by the Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (2019R1A6C1010046). This project was supported by Researchers Supporting Project number (RSPD2024R712), King Saud University, Riyadh, Saudi Arabia.
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Rajaram Rajamohan: conceptualization, methodology, interpretation, and writing—original draft. Chandramohan Govindasamy: interpretation. Michael Ruby Raj: methodology and interpretation. Chaitany Jayprakash Raorane: methodology and interpretation. Seong-Cheol Kim: methodology and interpretation. Sivakumar Allur Subramanian: methodology and interpretation. Sung Jae Kim: methodology, interpretation, and review. Kuppusamy Murugavel: interpretation and writing. Sanjeevram Dhandapani: interpretation. Yong Rok Lee: review, editing—original draft, and supervision.
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The details of the preparation of K4PTC, cell culture, instruments used for the characterization, and NMR discussion of K4PTC are provided in the supplementary documents. Supplementary file1 (DOCX 512 KB)
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Rajamohan, R., Govindasamy, C., Raj, M.R. et al. Loading of 4-Chloro-3-Formylcoumarin on the Potassium-Based Perylene Tetracarboxylic Acid as the Metal–Organic Framework for the Biocompatible Antimicrobial Performances. Korean J. Chem. Eng. (2024). https://doi.org/10.1007/s11814-024-00171-9
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DOI: https://doi.org/10.1007/s11814-024-00171-9