The C14GL (3) xerogel had a fiber structure with a diameter of 100-200 nm, while the other xerogels had a porous structure with plate-like crystals stacked three-dimensionally. Despite the same porous structure, C16GL (4), C18GL (5), and C22GL (6) exhibited different turbidity levels (Table ). In other words, the size of the plate-like crystals themselves was comparable, although the overall structure was expected to be larger with longer fatty acids, which would increase aggregation. All of these compounds exhibited gelation ability, but the gelation mechanism differed depending on the length of the fatty acid, with some forming a fiber structure and others a porous structure.