A non-covalent strategy to prepare electron donor–acceptor rotaxanes
作者:Francesco Scarel、Christian Ehli、Dirk M. Guldi、Aurelio Mateo-Alonso
DOI:10.1039/c3cc45325a
日期:——
A straightforward non-covalent synthetic strategy for producing donorâacceptor rotaxanes is reported. Femtosecond absorption spectroscopy illustrates that the use of this strategy gives rise to supramolecular chromophores with different electron transfer behavior.
Pyridine N-oxide derivatives are capable of formation of stable [2]pseudorotaxanes with diamide-based macrocycles in solution and in the solid state, and their dethreading/rethreading movements can be easily controlled by acid–base stimuli.