Organogels are formed by assembling low-molecular weight gelators (LMWGs) into entangled three-dimensional networks with solvent molecules entrapped inside through weak intermolecular interactions such as H-bonding and π-π stacking.Accordingly,the gel-solution (gel-sol) transition for organogels is thermally reversible.It is appealing to obtain organogels whose gel-sol transitions can be further tuned by other physical and chemical stimuli,since such external stimuli-responsive gels are highly desirable for the advanced applications of organogels such as sol-gel process,drug delivery,sensors and molecular logic gates.Development of such organogels may lead to novel smart materials.