Fig. 4: SEM images of membranes.
From: Hydrogen-bonded organic frameworks in solution enables continuous and high-crystalline membranes
Top-view SEM images of a barely AAO disk, b HOF-BTB@AAO membrane, and c BTB@AAO membrane, insets are their corresponding cross-section images. SEM images of d ITO, e HOF-BTB@ITO, f HBG, g HOF-BTB@HBG, h PET-ITO, i HOF-BTB@ PET-ITO, j Cu sheet, and k HOF-BTB@Cu membranes.
