Color morphing surfaces with effective chemical shielding

Adil Majeed Rather, Sravanthi Vallabhuneni, Austin J. Pyrch, Mohammed Barrubeeah, Sreekiran Pillai, Arsalan Taassob, Felix N. Castellano and Arun Kumar Kota ()
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Adil Majeed Rather: North Carolina State University
Sravanthi Vallabhuneni: North Carolina State University
Austin J. Pyrch: North Carolina State University
Mohammed Barrubeeah: North Carolina State University
Sreekiran Pillai: North Carolina State University
Arsalan Taassob: North Carolina State University
Felix N. Castellano: North Carolina State University
Arun Kumar Kota: North Carolina State University

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract Color morphing refers to color change in response to an environmental stimulus. Photochromic materials allow color morphing in response to light, but almost all photochromic materials suffer from degradation when exposed to moist/humid environments or harsh chemical environments. One way of overcoming this challenge is by imparting chemical shielding to the color morphing materials via superomniphobicity. However, simultaneously imparting color morphing and superomniphobicity, both surface properties, requires a rational design. In this work, we systematically design color morphing surfaces with superomniphobicity through an appropriate combination of a photochromic dye, a low surface energy material, and a polymer in a suitable solvent (for one-pot synthesis), applied through spray coating (for the desired texture). We also investigate the influence of polymer polarity and material composition on color morphing kinetics and superomniphobicity. Our color morphing surfaces with effective chemical shielding can be designed with a wide variety of photochromic and thermochromic pigments and applied on a wide variety of substrates. We envision that such surfaces will have a wide range of applications including camouflage soldier fabrics/apparel for chem-bio warfare, color morphing soft robots, rewritable color patterns, optical data storage, and ophthalmic sun screening.

Date: 2024
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DOI: 10.1038/s41467-024-48154-y

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