Fig. 3: Redox-responsive macrocycles.
From: Design, synthesis and applications of responsive macrocycles
a the chemical structures and the specific guest-binding behaves of CBPQT4+ macrocycle at different redox states41. b the structural changes of benzoquinone-contained pillar[5]arene macrocycle 12 during redox stimuli and the structure of testing guest G1242. c the chemical structure of hydroxyphenyl-appended macrocycle 13 and the diversified chromism of rcct-13 during stepwise oxidation and acidification. [O] denotes oxidation; [H+] and [B−] denote acid and base, respectively43.
