Formation of organic gel–liquid two-layer systems using diffusion-controlled gelation with a helicene derivative

Organic gel–liquid two-layer systems were constructed by two-liquid–ultrasonication–diffusion-controlled gelation using the chiral aminohydroxyhelicene derivative (M)-1. Gelation took place by the diffusion of (M)-1 and THF from the bottom layer to the upper hexane layer. This method provided multilayer liquid–gel systems.