Cascade‐Microphase‐Separation‐Induced Hierarchical Photonic Structures in Supramolecular Organogel for Deformation‐Insensitive Structural Colors

Photonic materials with tunable structural colors in response to various stimuli have enabled diverse sensing and displaying applications. However, the changeable colors caused by mechanical deformations may severely confuse the optical readouts for the upcoming wearable photonics. Herein, an extrem...

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Bibliographic Details
Published in:Advanced optical materials 2019-03, Vol.7 (6), p.n/a
Main Authors: Han, Peng, He, Xueying, Zhang, Yingxue, Zhou, Haiyan, Liu, Meijin, Wu, Na, Jiang, Jieke, Wei, Yu, Yao, Xi, Zhou, Jinming, Song, Yanlin
Format: Article
Language:English
Subjects:
Color
Deformation mechanisms
Deformation wear
deformation‐insensitive structural colors
Domains
Formability
hierarchical photonic structures
Hydrogen bonding
Materials science
Molding (process)
Nanocomposites
Nanoparticles
Optics
organogels
Paints
phase separation
Photonics
Protective coatings
Separation
Silicon dioxide
Structural hierarchy
Wearable technology
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Summary:Photonic materials with tunable structural colors in response to various stimuli have enabled diverse sensing and displaying applications. However, the changeable colors caused by mechanical deformations may severely confuse the optical readouts for the upcoming wearable photonics. Herein, an extremely stretchable supramolecular organogel is demonstrated with deformation‐insensitive structural colors through an unconventional cascade‐microphase‐separation process among the silica nanoparticles (SiO2 NPs), silicone oils, and hydrogen‐bonded polymer gel. The resultant sparse and abundant microscale SiO2 NP aggregates with proper sizes, shapes, and random distributions in the gel matrix serve as rigid structural color domains and secure invariant colors to the whole soft sample under extreme mechanical deformations. Moreover, the dynamic hydrogen bonding of the organogel matrix offers the nanocomposites shear‐thinning and easy‐molding property, making them ideal for color paints in versatile coating applications. The deformable organogel nanocomposites have great potentials in various fields requiring stable colors and open up a new avenue for the development of wearable photonic devices. Extremely deformable hierarchical‐photonic‐structured supramolecular organogel with deformation‐insensitive structural colors is developed through an unconventional cascade‐microphase‐separation process, which has great implications in the upcoming field of wearable photonics.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.201801749