Suberic Acid-Based Supramolecular Metallogels of Ni(II), Zn(II), and Cd(II) for Anti-Pathogenic Activity and Semiconducting Diode Fabrication

Gerald Lepcha; Santanu Majumdar; Baishakhi Pal; Kazi Tawsif Ahmed; Indrajit Pal; Biswarup Satpati; Swadesh Ranjan Biswas; Partha Pratim Ray; Biswajit Dey

doi:10.1021/acs.langmuir.3c00765

Suberic Acid-Based Supramolecular Metallogels of Ni(II), Zn(II), and Cd(II) for Anti-Pathogenic Activity and Semiconducting Diode Fabrication

Langmuir. 2023 May 30;39(21):7469-7483. doi: 10.1021/acs.langmuir.3c00765. Epub 2023 May 16.

Authors

Gerald Lepcha¹, Santanu Majumdar¹, Baishakhi Pal², Kazi Tawsif Ahmed³, Indrajit Pal¹, Biswarup Satpati⁴, Swadesh Ranjan Biswas³, Partha Pratim Ray², Biswajit Dey¹

Affiliations

¹ Department of Chemistry, Visva-Bharati University, Santiniketan 731235, India.
² Department of Physics, Jadavpur University, Kolkata 700032, India.
³ Department of Botany, Visva-Bharati University, Santiniketan 731235, India.
⁴ Surface Physics and Material Science Division, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata 700 064, India.

PMID: 37192598
DOI: 10.1021/acs.langmuir.3c00765

Abstract

The importance of three synthesized metallogels of suberic acid distinctly with nickel, zinc, and cadmium acetate salts has been uncovered. For the creation of these soft materials, N,N'-dimethyl formamide was utilized as a source of the trapped solvent. The synthesized metallogels display intriguing viscoelasticity, and the interpretation of experimental parameters obtained from rheological results advocates the gel behavior. Microstructural analysis combined with energy-dispersive X-ray confirms the occurrence of individual gel-developing constituents as observed in different hierarchical microstructural patterns. Significant variations in microstructural arrangements with diverse extent of supramolecular non-covalent patterns inside gel networks were perceived through field emission scanning electron microscopy, atomic force microscopy, and transmission electron microscopy analyses. Fourier transform infrared and electrospray ionization-mass spectral analyses and powder X-ray diffraction analysis of metallogel samples of different gel-establishing ingredients help to investigate the possible supramolecular interactions dictating the metallogel scaffolds. Thermogravimetric analysis of xerogel samples was collected from the synthesized metallogels to understand the thermal stability. These gel materials were characterized by their potential antibacterial efficiency. The potency of metallogels against selective Gram-positive and Gram-negative bacteria was visualized via a spectrophotometer. Human pathogens like Klebsiella pneumoniae (MTCC 109), Salmonella typhi (MTCC 733), Vibrio parahaemolyticus, Bacillus cereus (MTCC 1272), Lactobacillus fermentum (NCDO 955), and Staphylococcus aureus (MTCC 96) are employed in this study. Apart from the biological significance, our metallogels demonstrate as incredible diode performance of fabricated semiconducting systems, which exhibit a considerable amount of non-linearity demonstrating a non-ohmic conduction mechanism at room temperature in dark conditions. Device fabrication was achieved from these metallogels employing the sandwich model with indium tin oxide-coated glass substrates/metallogel/Al structure.