586462.fig.005a
(a)
586462.fig.005b
(b)
Figure 5: PDA-LDH film induced by UV irradiation and its thermochromic behavior (a) and fluorescent transition (b): (A) the DA-LDH film, (B) the PDA-LDH film obtained by UV irradiating (A), (C) the film by heating (B) at 130°C for 1 min, (D) the film by cooling (C) to room temperature [29].