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publicado em 21/07/2010 às 20h30:00
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Developed "we" molecular 30 000 times smaller than the diameter of a hair

Scientists have managed to create nodes on the nanoscale by mixing an aromatic amine ligand and a rigid flexible

 
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A team of researchers from the University of Liverpool, UK, built in the laboratory "we" with molecular dimensions of about two nanometers, 30 000 times smaller than the diameter of a human hair.

Most molecules are held together by chemical bonds between atoms, instead we are nano-mechanically linked by ties interpenetrating. Scientists were able to create nodes on the nanoscale in the laboratory by mixing two simple materials: an aromatic amine ligand and a rigid more flexible.

This is an unusual example of "self-assembly, a process that underlies the biology and allows the assembly of complex structures from simple building blocks. Each node is "tied" three times, ie at least three chemical bonds must be broken down to untie the knot. A single node is a complex of 20 smaller molecules.

"I was surprised when we find these molecules, the intention was to do something simpler. The complex structure arose from very basic building blocks. It's like shaking block letters inside a bag and pull out of there fully formed sentences. These are the surprises do the research so fascinating, "said Professor Andrew Cooper.

The team is now focusing on the practical application of these molecules and similar structures, for example, to build "machines" that can intercept molecular gases harmful to the health and pollutants such as carbon dioxide.

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