Determining details of attraction in mechanically-linked molecules allows chemists to fine-tune shapes, capabilities of supramolecules for improved and new polymers
Virginia Tech chemistry professor H.W. Gibson and his students have been able to take advantage of self assembly to create new chemical structures from mechanically-linked molecules. Gibson will give an invited talk in the Division of Polymer Chemistry at the 225th national meeting of the American Chemical Society March 23-27 in New Orleans.
The field of mechanically-linked chemistry uses a limited set of compounds as building blocks for supramolecules. Starting with crown ethers, which are rings (the ’hosts’), and rod-shaped molecules such as ammonium ions (the ’guests’), the chemists thread the rings with the rods to create molecules called pseudorotaxanes. Bulky groups are then added to the ends of the rods so they won’t unthread and these molecules are rotaxanes.
Harry Gibson | EurekAlert!
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