Photoactive Lignin-Derived Nanolayers for Camouflaged Bioaromatic Interfaces

Area of Science:

• Materials Science
• Polymer Chemistry
• Nanotechnology

Background:

• Lignin-based polymers are typically bulk materials, limiting nanoscale interfacial control.
• Existing lignin applications struggle with precise control over interfacial phenomena.

Purpose of the Study:

• To establish lignin as a platform for programmable photoactive bioaromatic nanolayers.
• To create transferable interfaces for diverse substrates using lignin.

Main Methods:

• Chemically functionalizing depolymerized lignin and hybridizing with glycerol-derived triglycidyl ether.
• UV-curing the resulting bioresins into conformal nanoconfined networks.
• Characterizing the nanolayers' mechanical, water-repellent, and optical properties.

Main Results:

• Developed nanometer- to micrometer-thick lignin coatings with mechanical robustness and water repellency.
• Achieved conformal integration on rigid, elastomeric, and hydrogel substrates.
• Demonstrated intrinsic fluorescence for optical logic and invisible patterning.

Conclusions:

• Lignin can be transformed into multifunctional interfacial nanomaterials.
• These bioaromatic nanolayers offer sustainable solutions for coatings, photonic surfaces, and hydrated interfaces.
• The hybrid structure provides both stiffness and conformability for versatile applications.