Dynamic control of circumrotation of a [2]catenane by acid-base switching.

ABSTRACT: Dynamic control of the motion in a catenane remains a big challenge as it requires precise design and sophisticated well-organized structures. This paper reports the design and synthesis of a donor-acceptor [2]catenane through mechanical interlocking, employing a crown ether featuring two dibenzylammonium salts on its side arms as the host and a cyclobis(paraquat-p-phenylene) (CBPQT ⋅ 4PF₆) ring as the guest molecule. By addition of external acid or base, the catenane can form self-complexed or decomplexed compounds to alter the cavity size of the crown ether ring, consequently affecting circumrotation rate of CBPQT ⋅ 4PF₆ ring of the catenane. This study offers insights for the design and exploration of artificial molecular machines with intricate cascading responsiv

SUBMITTER: Shi K 

PROVIDER: S-EPMC11319237 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature