Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices

Yuzheng Wu; Dezhi Xiao; Pei Liu; Qing Liao; Qingdong Ruan; Chao Huang; Liangliang Liu; Dan Li; Xiaolin Zhang; Wei Li; Kaiwei Tang; Zhengwei Wu; Guomin Wang; Huaiyu Wang; Paul K. Chu

doi:10.34133/research.0074

Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices

Yuzheng Wu (Co-first Author), Dezhi Xiao (Co-first Author), Pei Liu, Qing Liao, Qingdong Ruan, Chao Huang, Liangliang Liu, Dan Li, Xiaolin Zhang, Wei Li, Kaiwei Tang, Zhengwei Wu^*, Guomin Wang^*, Huaiyu Wang^*, Paul K. Chu^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

48 Downloads (CityUHK Scholars)

Abstract

The power generated by flexible wearable devices (FWDs) is normally insufficient to eradicate bacteria, and many conventional antibacterial strategies are also not suitable for flexible and wearable applications because of the strict mechanical and electrical requirements. Here, polypyrrole (PPy), a conductive polymer with a high mass density, is used to form a nanostructured surface on FWDs for antibacterial purposes. The conductive films with PPy nanorods (PNRs) are found to sterilize 98.2 ± 1.6% of Staphylococcus aureus and 99.6 ± 0.2% of Escherichia coli upon mild electrification (1 V). Bacteria killing stems from membrane stress produced by the PNRs and membrane depolarization caused by electrical neutralization. Additionally, the PNR films exhibit excellent biosafety and electrical stability. The results represent pioneering work in fabricating antibacterial components for FWDs by comprehensively taking into consideration the required conductivity, mechanical properties, and biosafety. © 2023 Yuzheng Wu et al.

Original language	English
Article number	0074
Journal	Research
Volume	6
Online published	10 Mar 2023
DOIs	https://doi.org/10.34133/research.0074
Publication status	Published - 2023

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@article{29904898c9f04289bd3f12a78e110618,

title = "Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices",

abstract = "The power generated by flexible wearable devices (FWDs) is normally insufficient to eradicate bacteria, and many conventional antibacterial strategies are also not suitable for flexible and wearable applications because of the strict mechanical and electrical requirements. Here, polypyrrole (PPy), a conductive polymer with a high mass density, is used to form a nanostructured surface on FWDs for antibacterial purposes. The conductive films with PPy nanorods (PNRs) are found to sterilize 98.2 ± 1.6% of Staphylococcus aureus and 99.6 ± 0.2% of Escherichia coli upon mild electrification (1 V). Bacteria killing stems from membrane stress produced by the PNRs and membrane depolarization caused by electrical neutralization. Additionally, the PNR films exhibit excellent biosafety and electrical stability. The results represent pioneering work in fabricating antibacterial components for FWDs by comprehensively taking into consideration the required conductivity, mechanical properties, and biosafety. {\textcopyright} 2023 Yuzheng Wu et al.",

author = "Yuzheng Wu and Dezhi Xiao and Pei Liu and Qing Liao and Qingdong Ruan and Chao Huang and Liangliang Liu and Dan Li and Xiaolin Zhang and Wei Li and Kaiwei Tang and Zhengwei Wu and Guomin Wang and Huaiyu Wang and Chu, {Paul K.}",

year = "2023",

doi = "10.34133/research.0074",

language = "English",

volume = "6",

journal = "Research",

issn = "2096-5168",

publisher = "American Association for the Advancement of Science",

}

TY - JOUR

T1 - Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices

AU - Wu, Yuzheng

AU - Xiao, Dezhi

AU - Liu, Pei

AU - Liao, Qing

AU - Ruan, Qingdong

AU - Huang, Chao

AU - Liu, Liangliang

AU - Li, Dan

AU - Zhang, Xiaolin

AU - Li, Wei

AU - Tang, Kaiwei

AU - Wu, Zhengwei

AU - Wang, Guomin

AU - Wang, Huaiyu

AU - Chu, Paul K.

PY - 2023

Y1 - 2023

N2 - The power generated by flexible wearable devices (FWDs) is normally insufficient to eradicate bacteria, and many conventional antibacterial strategies are also not suitable for flexible and wearable applications because of the strict mechanical and electrical requirements. Here, polypyrrole (PPy), a conductive polymer with a high mass density, is used to form a nanostructured surface on FWDs for antibacterial purposes. The conductive films with PPy nanorods (PNRs) are found to sterilize 98.2 ± 1.6% of Staphylococcus aureus and 99.6 ± 0.2% of Escherichia coli upon mild electrification (1 V). Bacteria killing stems from membrane stress produced by the PNRs and membrane depolarization caused by electrical neutralization. Additionally, the PNR films exhibit excellent biosafety and electrical stability. The results represent pioneering work in fabricating antibacterial components for FWDs by comprehensively taking into consideration the required conductivity, mechanical properties, and biosafety. © 2023 Yuzheng Wu et al.

AB - The power generated by flexible wearable devices (FWDs) is normally insufficient to eradicate bacteria, and many conventional antibacterial strategies are also not suitable for flexible and wearable applications because of the strict mechanical and electrical requirements. Here, polypyrrole (PPy), a conductive polymer with a high mass density, is used to form a nanostructured surface on FWDs for antibacterial purposes. The conductive films with PPy nanorods (PNRs) are found to sterilize 98.2 ± 1.6% of Staphylococcus aureus and 99.6 ± 0.2% of Escherichia coli upon mild electrification (1 V). Bacteria killing stems from membrane stress produced by the PNRs and membrane depolarization caused by electrical neutralization. Additionally, the PNR films exhibit excellent biosafety and electrical stability. The results represent pioneering work in fabricating antibacterial components for FWDs by comprehensively taking into consideration the required conductivity, mechanical properties, and biosafety. © 2023 Yuzheng Wu et al.

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85152132118&origin=recordpage

U2 - 10.34133/research.0074

DO - 10.34133/research.0074

M3 - RGC 21 - Publication in refereed journal

C2 - 36930769

SN - 2096-5168

VL - 6

JO - Research

JF - Research

M1 - 0074

ER -

Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices

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HMRF: Biocompatible Titanium Implants with Antibacterial Capability Arising from the Synergistic Effects of Mechanical and Electrical Interactions and Quantitative Bacteria Sensing Ability Based on Electron Transfer

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Nanostructured Conductive Polypyrrole for Antibacterial Components in Flexible Wearable Devices

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HMRF: Biocompatible Titanium Implants with Antibacterial Capability Arising from the Synergistic Effects of Mechanical and Electrical Interactions and Quantitative Bacteria Sensing Ability Based on Electron Transfer

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