Fig. 6
From: Changes in crystal morphology induced by lanthanide doping into diacetylene lamellar crystals
a SEM images of film surfaces prepared by varying the concentration of HoCl3 ∙ 6H2O. b SEM images of film surfaces prepared by varying the ratio of THF to H2O. c UV‒vis spectra of the residual solution after immersion of the Azo-DA film in the absence (black line) and presence (red line) of HoCl3 ∙ 6H2O for 5 days. d SEM images of the film surface during the initial process of making the Azo-DA/Ho film (after 10 and 60 min of immersion). The inset shows a magnified view
