Fig. 3
From: Alkylation of Spiropyran Moiety Provides Reversible Photo-Control over Nanostructured Soft Materials
a SAXS scattering profiles for phytantriol–water liquid crystal matrices containing: (top → bottom) phytantriol only, 2% (w/w) SOX, 2% (w/w) SP, 2% (w/w) SPL. The matrices were exposed to 60 s of UV light (375 nm, 60 mW) and the mesophase structure followed over this time. The insets show the color change of the matrices from clear to pinky-purple (SP), blue (SOX) or purple (SPL), before and after UV exposure due to the transition from the clear spiropyran form to the colored merocyanine form (Fig. 1).b The lattice parameter over time of the matrices where filled circles phytantriol only, filled squares SP, filled diamonds SOX, filled down triangles SPL, closed symbols represent v2 (Pn3m space group) and open symbols, H2