Main Page | See live article | Alphabetical index A rotaxane is a molecular structure in two parts which do not chemically interact: a ring, and an axis with end bumps which prevent the ring from leaving the axis. http://website.lineone.net/~matthew.carroll/research/crest/rotaxane.gif Rotaxanes, like catenanes, are of interest for their potential role in the future of molecular electronics as logic switching elements. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.