Rapid assembly of colorless antimicrobial and anti-odor coatings from polyphenols and silver

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Scientific Reports, Volume 12, issue 1
The development of antimicrobial fabrics and textiles that can sustainably inhibit a broad spectrum of microbes is crucial for protecting against pathogens in various environments. However, engineering antimicrobial textiles is challenging due to issues with discoloration and inhibited breathability, the use of harmful or harsh reagents and synthesis conditions, and complex and/or time-consuming processing. Herein, we develop a facile and rapid approach to deposit antimicrobial coatings using universally adherent plant polyphenols and antimicrobial silver ions. Importantly, the coatings are colorless, thin (< 10 nm), rapidly assembled (< 20 min), and can be deposited via immersion or spraying. We demonstrate that these metal-phenolic coatings on textiles can inhibit lipid-enveloped viruses over one thousand times more efficiently than coatings composed of other metal ions, while maintaining their efficacy even after 5 washes. Moreover, the coatings also inhibit Gram positive and negative bacteria, and fungi, and can prevent odors on clothes for at least 10 washes. Collectively, the ease of synthesis, use of simple and safe precursors, and amenability to at-home and industrial application suggests that the coatings will find practical application in various settings.
This work was partially supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant No. 20F20373 and 20H02581), the Japan Science and Technology Agency (JST) through the Precursory Research for Embryonic Science and Technology (PRESTO) grant number JPMJPR21N4, and UTokyo-Tsinghua collaborative research fund. JJR acknowledges JSPS for the postdoctoral fellowship for research in Japan (P20373). We acknowledge TokudAw Inc for the silk masks.
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Richardson , J J , Liao , W , Li , J , Cheng , B , Wang , C , Maruyama , T , Tardy , B L , Guo , J , Zhao , L , Aw , W & Ejima , H 2022 , ' Rapid assembly of colorless antimicrobial and anti-odor coatings from polyphenols and silver ' , Scientific Reports , vol. 12 , no. 1 , 2071 . https://doi.org/10.1038/s41598-022-05553-9