4.8 Article

Amphiphilic Alginate-Based Layer-by-Layer Coatings Exhibiting Resistance against Nonspecific Protein Adsorption and Marine Biofouling

Journal

ACS APPLIED MATERIALS & INTERFACES
Volume 14, Issue 14, Pages 16062-16073

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsami.2c01809

Keywords

polysaccharides; layer-by-layer; alginic acid; polyethylenimine; antifouling

Funding

  1. Office of Naval Research (ONR) [N00014-20-12244]
  2. Deutsche Forschungsgemeinschaft (DFG) [RO2524/4-2, GRK2376/331085229]

Ask authors/readers for more resources

Amphiphilic polysaccharides were fabricated by coupling hydrophobic PFPA to hydrophilic alginic acid, and their resistance against protein adsorption and marine fouling organisms was explored. The amphiphilic multilayers exhibited higher resistance towards protein adsorption and microfouling marine organisms compared to multilayers without fluoroalkyl groups.
Amphiphilic coatings are promising materials for fouling-release applications, especially when their building blocks are inexpensive, biodegradable, and readily accessible polysaccharides. Here, amphiphilic polysaccharides were fabricated by coupling hydrophobic pentafluoropropylamine (PFPA) to carboxylate groups of hydrophilic alginic acid, a natural biopolymer with high water-binding capacity. Layer-by-layer (LbL) coatings comprising unmodified or amphiphilic alginic acid (AA*) and polyethylenimine (PEI) were assembled to explore how different PFPA contents affect their physicochemical properties, resistance against nonspecific adsorption (NSA) of proteins, and antifouling activity against marine bacteria (Cobetia marina) and diatoms (Navicula perminuta). The amphiphilic multilayers, characterized through spectroscopic ellipsometry, water contact angle goniometry, elemental analysis, AFM, XPS, and SPR spectroscopy, showed similar or even higher swelling in water and exhibited higher resistance toward NSA of proteins and microfouling marine organisms than multilayers without fluoroalkyl groups.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available