762732.fig.009a
(a)
762732.fig.009b
(b)
Figure 9: FT-IR spectra of xerogels: (a) S-PC18, S-TriC18, and N-TriC18 in nitrobenzene ((A)–(C), resp.); (b) S-PC18 and N-PC18 in ethanolamine ((A)-(B), resp.).