Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 2, Pages 2166-2173Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b15756
Keywords
cationic amine-modified catechol; surface anchoring; antifouling; mussel-inspired adhesion; molecular force
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Foundation for Innovation
- Canada Research Chairs Program
- China Scholarship Council
- Alberta Innovates-Technology Futures
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An outstanding anchoring ligand with robust anchoring ability and universal applicability is highly desirable in materials science and surface engineering. This work reports a novel and universal mussel-inspired anchoring strategy based on a cationic amine-modified catechol ligand coupled with the 2-methacryloyloxyethyl phosphorylcholine moiety. The ligand shows substrate-independent anchoring capability, and the deposited film possesses excellent antifouling properties and superior ultrasonic stability as compared to the conventional catechol ligand. Single-molecule force spectroscopy based on atomic force microscopy reveals that the enhanced ultrastable anchoring is attributed to the synergistic binding effect of cationic amine and catechol. Our results provide new nanomechanical insights into the development of novel coating strategies underwater based on amine-incorporated catechol derivatives for a wide range of materials engineering, bioengineering, and environmental applications.
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