Directional calixarene wheels were threaded along a bis(benzylalkylammonium) axle in a stereoprogrammed way to obtain the first examples of calixarene-based [3]rotaxanes. The base/acid treatment demonstrated that these systems act as nanosized mol. shuttles. An unprecedented switching between the tail-to-tail and head-to-head relative orientation of the calix-wheels was obsd.
Stereoprogrammed Direct Synthesis of Calixarene-Based [3]Rotaxanes
TALOTTA, CARMEN;GAETA, CARMINE;NERI, Placido
2012-01-01
Abstract
Directional calixarene wheels were threaded along a bis(benzylalkylammonium) axle in a stereoprogrammed way to obtain the first examples of calixarene-based [3]rotaxanes. The base/acid treatment demonstrated that these systems act as nanosized mol. shuttles. An unprecedented switching between the tail-to-tail and head-to-head relative orientation of the calix-wheels was obsd.File in questo prodotto:
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