Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/93522
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dc.contributor.authorFang, Yanen
dc.contributor.authorTan, Jiajunen
dc.contributor.authorLan, Tianen
dc.contributor.authorFoo, Stanley Guo Fengen
dc.contributor.authorPyun, Do Gien
dc.contributor.authorLim, Sierinen
dc.contributor.authorKim, Dong-Hwanen
dc.date.accessioned2019-09-12T06:52:13Zen
dc.date.accessioned2019-12-06T18:40:47Z-
dc.date.available2019-09-12T06:52:13Zen
dc.date.available2019-12-06T18:40:47Z-
dc.date.issued2017en
dc.identifier.citationFang, Y., Tan, J., Lan, T., Foo, S. G. F., Pyun, D. G., Lim, S., & Kim, D.-H. (2018). Universal one-pot, one-step synthesis of core-shell nanocomposites with self-assembled tannic acid shell and their antibacterial and catalytic activities. Journal of Applied Polymer Science, 135(6), 45829-. doi:10.1002/app.45829en
dc.identifier.issn0021-8995en
dc.identifier.urihttps://hdl.handle.net/10356/93522-
dc.description.abstractFacile synthesis of metal@polymer nanocomposites were achieved using self‐assembled tannic acid (TA) shells without crosslinkers. The TA shell was assembled under mildly alkaline conditions in reaction time of 20 min under constant vortexing. Universal synthesis method was demonstrated by the synthesis of Ag@TA and Au@TA nanocomposites. We propose that the shell formation is due to TA undergoing oxidative self‐polymerization to poly(tannic acid) or a supramolecular aggregate of oxidized TA held together by charge transfer, hydrogen bond, and π–π interactions, similar to dopamine polymerization. Gibbs free energy calculations suggest that polymerization is energetically favorable. Synthesized Ag@TA exhibited antibacterial functionality with Escherichia coli minimum inhibitory concentration of 100 µg mL−1 up to 48 h. The population of E. coli was also reduced by 99% within 5 h when incubated with 100 µg mL−1 of Ag@TA nanocomposite. Au@TA also functions as a reduction catalyst. It reduces 4‐nitrophenol to 4‐aminophenol in the presence of NaBH4 with a rate constant of k = 0.63 min−1 μmol−1. For comparison, using Au nanoparticles yields a rate constant of 0.14 min−1 μmol−1. The ease of synthesis renders the nanocomposites superior to others, with potential for large‐scale application.en
dc.format.extent38 p.en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Applied Polymer Scienceen
dc.rightsThis is the peer reviewed version of the following article: Fang, Y., Tan, J., Lan, T., Foo, S. G. F., Pyun, D. G., Lim, S., & Kim, D.-H. (2018). Universal one-pot, one-step synthesis of core-shell nanocomposites with self-assembled tannic acid shell and their antibacterial and catalytic activities. Journal of Applied Polymer Science, 135(6), 45829-., which has been published in final form at https://doi.org/10.1002/app.45829. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.en
dc.subjectEngineering::Chemical engineeringen
dc.subjectApplicationsen
dc.subjectBioengineeringen
dc.titleUniversal one-pot, one-step synthesis of core-shell nanocomposites with self-assembled tannic acid shell and their antibacterial and catalytic activitiesen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Chemical and Biomedical Engineeringen
dc.identifier.doi10.1002/app.45829en
dc.description.versionAccepted versionen
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