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  Polyelectrolyte substrate coating for controlling biofilm growth at solid–air interface

Ryzhkov, N. V., Nikitina, A. A., Fratzl, P., Bidan, C. M., & Skorb, E. V. (2021). Polyelectrolyte substrate coating for controlling biofilm growth at solid–air interface. Advanced Materials Interfaces, 8(10): 2001807. doi:10.1002/admi.202001807.

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 Creators:
Ryzhkov, Nikolay V., Author
Nikitina, Anna A., Author
Fratzl, Peter1, Author              
Bidan, Cécile M.2, Author              
Skorb, Ekaterina V., Author
Affiliations:
1Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              
2Cecile Bidan, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2481713              

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Free keywords: adhesion, biofilms, polyelectrolyte coatings, polymer interfaces, wetting
 Abstract: Because bacteria–surface interactions play a decisive role in bacteria adhesion and biofilm spreading, it is essential to understand how biofilms respond to surface properties to develop effective strategies to combat them. Polyelectrolyte coating is a simple and efficient way of controlling surface charge and energy. Using polyelectrolytes of various types, with different molecular weights and polyelectrolyte solutions of various pH provides a unique approach to investigate the interactions between biofilms and their substrate. Here, the formation of Escherichia coli biofilms at a solid–air interface is explored, whereby charge and interfacial energy are tuned using polyelectrolyte coatings on the surface. Cationic coatings are observed to limit biofilm spreading, which remain more confined when using high molecular weight polycations. Interestingly, biofilm surface densities are higher on polycationic surfaces despite their well-studied bactericidal properties. Furthermore, the degree of polyelectrolyte protonation also appears to have an influence on biofilm spreading on polycation-coated substrates. Finally, altering the interplay between biomass production and surface forces with polyelectrolyte coatings is shown to affect biofilm 3D architecture. Thereby, it is demonstrated that biofilm growth and spreading on a hydrogel substrate can be tuned from confined to expanded, simply by coating the surface using available polyelectrolytes.

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Language(s): eng - English
 Dates: 2021-03-182021
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1002/admi.202001807
BibTex Citekey: https://doi.org/10.1002/admi.202001807
PMID: 0605
Other: M:\BM-Publications\2021\RyzhkovAdvMatInt_Polyelectrolyte
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Title: Advanced Materials Interfaces
  Abbreviation : Adv. Mater. Interfaces
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 8 (10) Sequence Number: 2001807 Start / End Page: - Identifier: ISSN: 2196-7350