Ferrocenyl-guest tunable organogel constructed from a Pillar[6]arene-functionalized cholesterol derivative

Abstract A pillar[6]arene-functionalized cholesterol derivative 1 was synthesized as a low molecular weight gelator (LMWG), which could form an organogel in the cyclohexane/ n -hexanol (10:1, v/v) at 10 °C. The resulting organogel was reversibly responsive to the temperature and shear stress, respectively, and more importantly, it also could be tuned into the solution by the addition of ferrocenyl aminium derivative 2 and tuned back into the organogel followed by the addition of per-butylated pillar[6]arene ( P[6] ), due to the host-guest interactions.