Figure 3
SEM images of xerogels. CH-C1 gels ((a) isooctanol, (b) n-hexane, (c) 1,4-dioxane, (d) nitrobenzene, (e) aniline), CH-C3 gels ((f) cyclohexanone, (g) 1,4-dioxane, (h) nitrobenzene, (i) ethyl acetate, (j) petroleum ether, (k) DMF), CH-C4 gels ((l) nitrobenzene, (m) aniline, (n) n-butyl acrylate, (o) DMF), and CH-N1 gels ((p) pyridine).