Fig. 3: Diselenide bond exchange enables programming of CLCEs.
From: Visible-light-programmed patterning in dynamically bonded cholesteric liquid crystal elastomer
a Schematic diagram of stretching-mode programming of CLCEs with diselenium bonds (p1 > p2). b Stress relaxation curves of CLCEs irradiated for 1 h under different light intensities. c Central reflection wavelength of CLCEs after irradiation for different durations at different light intensities. The data are presented as the mean of three measurements ± SD. d Reflectance spectra of CLCEs after 1 h of irradiation under different light intensities. e Tg values of CLCEs after exposure to 405 nm light at an intensity of 100 mW/cm2 for different times. f Azimuthal intensity distribution of CLCEs after exposure to 405 nm light at an intensity of 20 mW/cm2 for different times. The corresponding 2D-WAXD patterns (g) and POM images (h) of CLCEs undergo 0 min (i) and 30 min (ii) irradiating in (f).
