Fig. 2. (a) Crystals of ROY grown from four non-specific control gels and from gels of 2 (left to right: 3–6 and 2) and a solution phase control experiment. (b) Isolated gel-grown crystals of the Y and R forms. (c) Y-Form crystals growing in a toluene gel of non-specific gelator 6 (left) and R-form crystals growing in toluene gel of 2, (right; arrows point to individual crystals).
