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Advances in Nano Research Volume 10, Number 4, April 2021 , pages 373-383 DOI: https://doi.org/10.12989/anr.2021.10.4.373 |
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Silver (I)- Schiff-base complex intercalated layered double hydroxide with antimicrobial activity |
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Mary Jenisha Barnabas, Surendran Parambadath, Saravanan Nagappan, Ildoo Chung and Chang-Sik Ha
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| Abstract | ||
| In this work, silver nitrate complexes of sulfanilamide-5-methyl-2-thiophene carboxaldehyde (SMTCA) ligand intercalated Zn/Al-layered double hydroxide [Ag-SMTCA-LDH] were synthesized for the potential application as an antimicrobial system. The SMTCA ligand was synthesized by reacting sulfanilamide and 5-methyl-2-thiophene carboxaldehyde in methanol and further complexation with silver nitrate metal ions [Ag-SMTCA]. The structural analyses of synthesized compounds confirmed an intercalation of Ag-SMTCA into Zn/Al-NO3-LDH by flake/restacking method. SMTCA, Ag-SMTCA and Ag-SMTCA-LDH were characterized by 1H nuclear magnetic resonance (1H NMR) spectroscopy, Fourier-transform infrared (FTIR), ultraviolet-visible (UV-Vis) spectrophotometer, scanning electron microscopy (SEM) and transmission electron microscopy (TEM), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). It was found that Ag-SMTCA-LDH exhibited good antimicrobial activity against both gram-positive (Bacillus subtilis, [B. subtilis], Staphylococcus aures, [S. aureus]) and gram-negative (Escherichia coli, [E. coli], Pseudomonas aeruginosa [P. aeroginosa]) bacteria as well as excellent antioxidant activity. | ||
| Key Words | ||
| Schiff-base complex; layered double hydroxide; silver; antimicrobial activity; antioxidant activity | ||
| Address | ||
| Department of Polymer Science and Engineering, School of Chemical Engineering, Pusan National University, Geumjeong-gu, Busan, 46241, Republic of Korea. | ||