Fig. 3. (a) Collated data comparing the form of ROY obtained from 100 mg mL–1 toluene gels of designer gelator 2, non-specific gelators 3, 4, 6 and 7, from toluene solution saturated with 2 and from solution. R + Y denotes concomitant crystallisation of both the R and Y crystal forms in the same sample. (b) Crystallization of the Y form of ROY from a toluene gel of control compound 7 and the R form from a toluene gel of 2 (arrows point to individual crystals).
