Fig. 4: Multistimulus-responsive macrocycles.
From: Design, synthesis and applications of responsive macrocycles
a the multistimulus-responsive sol-gel process of the hydrogel formed by the macrocycle 14 and Mg2+, 44. b the chemical structure of macrocycle 15 containing four distinguishable recognition sites and the unidirectional rotation of two benzylic macrocycles (BM1 and BM2) along the track of the 15 in the [3]catenane controlled by alternate light irradiation and heating cycles: (1) 350 nm, 5 min, (2) 254 nm, 20 min and (3) 100 °C, 24 h45.
