Figure 33.

(A) Chemical structure and (B) packing of 4,6-O-benzylidene methyl β-d-glucopyranoside in its gel showing a stacked arrangement of methyl groups; (C) proposed packing arrangement of the diacetylene functionalized gelator; (D) chemical structure of a photo-polymerizable organogelator 43a. An inverted test-tube image of the toluene gel is also shown; (E) IR spectral comparison of DCM solution with the toluene gel of diyne 43a; (F) chemical structure of 43b obtained by topochemical polymerization of diyne 43a in the gel state. A photograph of the polymerized gel is also shown; (G) and (H) time-dependent UV-visible spectra of 43a in toluene gel and in DCM solution, respectively; (I) an overlay of the FT-IR spectra of the xerogels made before (43a) and after UV-irradiation of toluene gel (43b). Reprinted with permission from [135]. Copyright 2016 Royal Society of Chemistry.