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- W1478236134 abstract "Abstract The physicochemical characterization of the structure and desorption relationship in tioconazole (TN)-assembled gold nanoparticles (AuNPs) was studied using density functional theory (DFT) calculations and Raman spectroscopy. UV–vis absorption spectroscopy and surface-enhanced Raman scattering (SERS) were performed to examine the loading of TN on the metal nanoparticle surfaces. From the SERS spectra, TN appeared to adsorb on AuNPs mainly by way of its imidazole and 2-chlorothiophene unit. On the basis of the DFT calculations of the 6-metal cluster atom model, the binding energies of TN via the 2-chlorothiophene unit were predicted to be smaller than those for the imidazole coordination. The hydrodynamic diameters of TN-conjugated AuNPs were reduced to be in the range of ∼165 nm after the PEGylation and to be suitable for the cellular uptake. The TN adsorbate was supposed to release from the AuNPs in the intracellular fungal component of glutathione after treatment with the fungi, consistent with the DFT calculations. Cell viability tests of Penicillium digitatum, Penicillium expansum, and Aspergillus nidulans before and after treatment with the TN-assembled AuNPs were examined to test the feasibility of developing an efficient drug delivery system. After 24 h treatment, TN-adsorbed AuNPs exhibited enhanced fungal cell killing according to a Student t -test ( p" @default.
- W1478236134 created "2016-06-24" @default.
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- W1478236134 date "2015-12-01" @default.
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- W1478236134 title "Physicochemical characterization of the structure and desorption relationship of tioconazole-assembled gold nanoparticles investigated by density functional theory and Raman spectroscopy" @default.
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- W1478236134 doi "https://doi.org/10.1016/j.colsurfa.2015.09.017" @default.
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