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November 01, 2005

Venetian blinds

A molecule that flips its arms like the slats on a Venetian blind might in future find uses in computer displays, computer memory, or even windows that become tinted at the flick of a switch.

Molecules whose shapes or movements can be easily controlled are important for nanotechnology. One kind that promises to be useful are those shaped in a helix that can be made to reverse its direction. When that happens the molecule is said to reverse its chirality.

Researchers at North Carolina State University in Raleigh and Vanderbilt University in Nashville, Tennessee, were working with a helical polymer called polyguanidine. Polyguanidine actually switched chirality so easily that it was difficult to control. To try to make the helices more stable, the researchers stuck side chains of anthracene along the helical backbone.

Complete Article

Posted by thinkingmachine at November 1, 2005 03:10 PM

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