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. Author manuscript; available in PMC: 2018 Oct 9.
Published in final edited form as: Mater Horiz. 2017 Oct 9;4(6):1190–1195. doi: 10.1039/c7mh00644f

Figure 2.

Figure 2

(a) Ultra-wide colorful reflection distribution of CLCs with gradient concentrations of Azo4 in SLC1717. Reflection colors of the CLCs with 7 wt % chiral switch Azo4 in SLC1717 at room temperature (b) upon UV irradiation (365 nm, 30 mW/cm2) with different times, and (c) reverse process upon visible irradiation (460 nm, 30 mW/cm2). (d) The real images of a 10 μm thick CLC film in a planar cell (2.2 cm×2.5 cm) filled with 8 wt% Azo4 in SLC1717 were recorded through the combination of a photomask with the control of UV irradiation time. Reflective spectra of the CLCs with 7 wt % chiral switch Azo4 in SLC1717 at room temperature (e) under UV light at 365 nm and (f) reverse process upon visible exposure at 460 nm with different times.