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A Phosphine Oxide Functional Group Based [2]Rotaxane That Operates as a Multistable Molecular Shuttle
Author(s) -
Cheng Ming,
Liu Li,
Cao Yihan,
Jiang Juli,
Wang Leyong
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201501016
Subject(s) - rotaxane , phosphine oxide , group (periodic table) , chemistry , oxide , phosphine , functional group , crystallography , nanotechnology , materials science , organic chemistry , crystal structure , catalysis , supramolecular chemistry , polymer
Abstract A switchable [2]rotaxane based on a pyridinediamide crown ether macrocycle and a thread bearing phosphine oxide, urea, and dibenzylammonium functional groups was successfully developed and characterized by 1 H NMR and 2D NMR spectroscopy, mass spectrometry, and single‐crystal analysis. The three recognition sites in the [2]rotaxane were sorted from strong to weak, according to their bonding abilities, so that the macrocycle could move along the thread from one side to the other in a directional way, operating as a multistable molecular shuttle.