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Reactive Multilayer Coating As Versatile Nanoarchitectonics for Customizing Various Bioinspired Liquid Wettabilities
Dibyangana Parbat1, Nirban Jana1, Manideepa Dhar1
1Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India.
ACS Applied Materials & Interfaces
|June 22, 2022
Summary
Multilayer coatings offer tunable properties for functional materials. Readily and selectively reactive multilayer coatings (RMLCs) enable versatile post-fabrication modifications, leading to diverse liquid wettability properties for advanced applications.
Area of Science:
- Materials Science
- Surface Chemistry
Background:
- Multilayer coatings are conventionally fabricated using layer-by-layer (LbL) deposition, allowing control over thickness, topography, and composition.
- Conventional methods face challenges in post-fabrication modification of porous multilayers due to limited reactive sites.
- Readily and selectively reactive multilayer coatings (RMLCs) offer a solution for facile chemical and morphological post-modulations.
Purpose of the Study:
- To review the evolution of LbL multilayer coatings and their synthesis.
- To highlight the advantages of RMLCs for controlled wettability.
- To discuss recent applications of RMLCs with tailored liquid wettabilities.
Main Methods:
- Overview of conventional layer-by-layer (LbL) deposition techniques.
- Discussion of the design principles for readily and selectively reactive multilayer coatings (RMLCs).
- Analysis of strategies for co-optimizing topography and chemistry in RMLCs.
Main Results:
- RMLCs facilitate post-fabrication tuning of coating chemistry and morphology.
- Diverse bioinspired liquid wettabilities (e.g., superhydrophobicity, underwater superoleophobicity) were achieved.
- The ability to precisely control wettability opens avenues for various applications.
Conclusions:
- RMLCs represent a significant advancement over conventional LbL coatings.
- The facile post-modulation capability of RMLCs is key to achieving diverse and durable wettability.
- These advanced interfaces hold substantial promise for numerous prospective applications.
