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Semi-Empirical Study of a pH-Switchable [2] Rotaxane
Journal article

Semi-Empirical Study of a pH-Switchable [2] Rotaxane

Laura Frankfort and Karl Sohlberg
MRS proceedings, v 741, pp 191-196
2002

Abstract

Semi-empirical (AM1) electronic structure calculations are reported on a pH-switchable [2] rotaxane whose synthesis was reported in [Angew. Chem. Int. Ed., 36 (1997) 1904]. The [2] rotaxane possesses two cationic binding sites, with different affinities toward dibenzo [24] crown-8 (the ring component of the [2] rotaxane) depending upon the pH of the system. The computational results capture this pH-sensitive bistability, the key device-like characteristic of the rotaxane.

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