A one step method for the functional and property modification of DOPA based nanocoatings

Area of Science:

• Materials Science
• Polymer Chemistry
• Biomaterials Engineering

Background:

• Poly(catecholamine) coatings are versatile functional materials with broad applications.
• Current methods for modifying these coatings are limited, primarily relying on post-modification techniques.
• There is a need for facile and versatile strategies to create functionalized poly(catecholamine) coatings.

Purpose of the Study:

• To develop a simple and effective approach for fabricating novel functionalized poly(catecholamine) coatings.
• To demonstrate the ability to tune coating properties through copolymerization with nucleophilic additives.
• To showcase a specific application of these coatings as a redox-responsive controlled release system.

Main Methods:

• Employed a copolymerization strategy involving N-Ac-3,4-dihydroxyphenylalanine methyl ester (NADOPAMe) and various nucleophilic additives.
• Applied the resulting nano-coatings onto diverse substrates, including plastic, metal, and glass.
• Fabricated a redox-responsive coating using cysteamine as an additive to demonstrate glutathione (GSH) responsiveness.

Main Results:

• Successfully fabricated functionalized poly(catecholamine) nano-coatings on multiple surfaces.
• Demonstrated that the choice of nucleophilic additive dictates the final coating properties.
• Developed a NADOPAMe-cysteamine coating exhibiting concentration-dependent glutathione responsiveness.
• Showcased the potential of this system for controlled release applications.

Conclusions:

• The copolymerization approach offers a versatile and simple method for creating functionalized poly(catecholamine) coatings.
• This strategy allows for the rational design of coatings with specific responsive properties.
• The developed coatings hold promise for applications in controlled release and other advanced material systems.