3 years ago

Oscillating Emission of [2]Rotaxane Driven by Chemical Fuel

Oscillating Emission of [2]Rotaxane Driven by Chemical
Claudia Wickleder, Amit Ghosh, Matthias Adlung, Indrajit Paul, Michael Schmittel
A molecular shuttle consisting of a dibenzo-24-crown-8 macrocycle and an axle with two degenerate peripheral triazolium stations, a central dibenzyl ammonium station, and two anthracenes stoppers was exposed to 2-cyano-2-phenylpropanoic acid as a chemical fuel. Protonation/deprotonation of the amine reversibly switches the rotaxane from a static and little emissive to a dynamic fluorescent shuttling device, the latter exhibiting rapid motion (15 kHz at 25 °C). Four fuel cycles were run.

Publisher URL: http://dx.doi.org/10.1021/acs.orglett.7b03996

DOI: 10.1021/acs.orglett.7b03996

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