Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 34, Pages 22585-22592Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b07576
Keywords
PCs; hollow SiO2-PDMS; stop-bands invariable; brilliant colors; enhaneed robustness
Funding
- National Natural Science Foundation of China [51472153, 51232008]
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Recently, structural colors have attracted great concentrations because the coloration is free from chemical or photobleaching. However, the color saturation and mechanical robustness are generally competitive properties in the fabrication of PCs (photonic crystals) films. Besides, the structure of PCs and their derivatives are easy to be invaded by liquids and lead to band gap shifts due to the change of refractive index or periodicity. To solve those problems, we infiltrate polydimethylsiloxane (PDMS) into the intervals between regularly arrayed hollow SiO2 nanospheres, inspired by the cobbled road prepared by embedding stone in the bulk cement matrix. Consequently, the as-prepared PCs films show brilliant colors, invariable stop-bands, and excellent mechanical robustness. Moreover, the water contact angle even reached 166 degrees after a sandpaper abrasion test. The combination of brilliant colors, invariable stop-bands, and excellent robustness is significant for potential application in paint and external decoration of architectures.
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