Shi Kelun, Jia Guohui, Wu Ying, Zhang Shilong, Chen Jiawen
SCNU-UG International Joint Laboratory of Molecular Science and Displays, National Center for International Research on Green Optoelectronics, Guangzhou, 510006, P. R. China.
ChemistryOpen. 2024 Aug;13(8):e202300304. doi: 10.1002/open.202300304. Epub 2024 Feb 9.
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 ⋅ 4PF) 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 ⋅ 4PF ring of the catenane. This study offers insights for the design and exploration of artificial molecular machines with intricate cascading responsive mechanisms.
索烃中运动的动态控制仍然是一个巨大的挑战，因为它需要精确的设计和复杂有序的结构。本文报道了一种通过机械互锁设计和合成的供体-受体[2]索烃，采用侧臂带有两个二苄基铵盐的冠醚作为主体，以及环双(对苯撑对苯二铵)(CBPQT·4PF)环作为客体分子。通过添加外部酸或碱，该索烃可以形成自络合或解络合的化合物，从而改变冠醚环的空腔大小，进而影响索烃中CBPQT·4PF环的环旋转速率。这项研究为设计和探索具有复杂级联响应机制的人工分子机器提供了思路。
