Bioinspired Supramolecular Slippery Organogels for Controlling Pathogen Spread by Respiratory Droplets. (19th June 2021)

• Record Type: Journal Article
• Authors: Wang, Zhaoyue; Yi, Bo; Wu, Mandi; Lv, Dong; He, Ming‐Liang; Liu, Meijin; Yao, Xi
• Is Part Of: Advanced functional materials. Volume 31:Number 34(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-19
• Subjects: antimicrobial -- organogels -- respiratory microdroplets -- self‐healing -- slippery coating; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.202102888
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract: Surface‐deposited pathogens are sources for the spread of infectious diseases. Protecting public facilities with a replaceable or recyclable antifouling coating is a promising approach to control pathogen transmission. However, most antifouling coatings are less effective in preventing pathogen‐contained respiratory droplets because these tiny droplets are difficult to repel, and the deposited pathogens can remain viable from hours to days. Inspired by mucus, an antimicrobial supramolecular organogel for the control of microdroplet‐mediated pathogen spread is developed. The developed organogel coating harvests a couple of unique features including localized molecular control‐release, readily damage healing, and persistent fouling‐release properties, which are preferential for antifouling coating. Microdroplets deposited on the organogel surfaces will be spontaneously wrapped with a thin liquid layer, and will therefore be disinfected rapidly due to a mechanism of spatially enhanced release of bactericidal molecules. Furthermore, the persistent fouling‐release and damage‐healing properties will significantly extend the life‐span of the coating, making it promising for diverse applications. Abstract : A slippery organogel coating is developed by encapsulating silicone oil and carvacrol in HMDI‐PDMS, resulting in high transparency, microdroplets disinfection, fouling‐release, and self‐healing properties. Surface‐deposited microdroplets can be disinfected rapidly due to the wrapping layer enhanced bactericidal molecules release. This organogel coating can be applied on a wide variety of materials with a prolonged life‐span for persistent antimicrobial performances.