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Microwave‐assisted synthesis of water‐soluble styrylpyridine dye‐capped zinc oxide nanoparticles for antibacterial applications
Author(s) -
Giridhar Manjunath,
Naik Halehatty S. Bhojya,
Sudhamani Chatnalli N.,
Prabakara Mustur C.,
Kenchappa Rajappa,
Venugopal Nagaraju,
Patil Sameer
Publication year - 2020
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201900029
Subject(s) - wurtzite crystal structure , chemistry , nanoparticle , zinc , antibacterial activity , nuclear chemistry , fourier transform infrared spectroscopy , bacillus subtilis , chemical engineering , nanotechnology , organic chemistry , bacteria , materials science , biology , engineering , genetics
Abstract ZnO nanoparticles were successfully synthesized using a microwave method, whose surface was modified with {4‐[(E)‐2‐(furan‐2‐yl)ethenyl]pyridin‐1‐ium‐1‐yl}acetate as a capping agent (1 and 3%). Their structural properties were investigated using FTIR, XRD, SEM, EDS, and UV–visible spectroscopy. XRD confirmed the Wurtzite structure for all compounds, a size of 30.6 nm for uncapped and 22.9 nm for 3% dye‐capped nanoparticles were calculated from Scherer's equation. Hexagonal wurtzite shape of nanoparticles can be clearly seen in the SEM images. The DFT calculations were carried out using quantum espresso. These dye‐capped ZnO nanoparticles were proved to be potential antibacterial agents, the minimum concentrations of dye‐capped ZnO nanoparticles that inhibit the growth of bacteria are 1.5 mg/mL for Escherichia coli and 0.78 mg/mL for Bacillus subtilis, which are much lower than those of uncapped ZnO. The bioactivity data suggest these organic–inorganic hybrid nanoparticles emerged as a new class of antibacterial agents.