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Pillar[5]arene Based Pseudo[1]rotaxane Operating as Acid/Base‐Controllable Two State Molecular Shuttle
Author(s) -
Zhao Qian,
Chen Yuan,
Sun Baobao,
Qian Cheng,
Cheng Ming,
Jiang Juli,
Lin Chen,
Wang Leyong
Publication year - 2019
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201900075
Subject(s) - rotaxane , chemistry , pillar , dimer , ethylene glycol , ethylene , crystallography , catenane , stereochemistry , molecule , polymer chemistry , organic chemistry , supramolecular chemistry , crystal structure , catalysis , structural engineering , engineering
A ethylene glycol bridged pyridine and pillar[5]arene based mechanically selflocked pseudo[1]rotaxane was constructed successfully. The structure and selflocked conformation of pseudo[1]rotaxane were confirmed by 1 H, 2D NMR spectrum and HR‐ESI‐MS. It was found that in dilute solution the pseudo[1]rotaxane could be operated as an acid/base‐controllable two state molecular shuttle while In concentrated solution, the pseudo[1]rotaxane existed as a dimer and could be operated from shrinking state to extension state.
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