From Berkeley Lab: “Forcing the Molecular Bond Issue”


Berkeley Lab

New and Improved Model of Molecular Bonding from Researchers at Berkeley Lab’s Molecular Foundry

September 05, 2012
Lynn Yarris

Material properties and interactions are largely determined by the binding and unbinding of their constituent molecules, but the standard model used to interpret data on the formation and rupturing of molecular bonds suffers from inconsistencies. A collaboration of researchers led by a scientist at the U.S Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) has developed a first-of-its-kind model for providing a comprehensive description of the way in which molecular bonds form and rupture. This model enables researchers to predict the ‘binding free energy’ of a given molecular system, which is key to predicting how that molecule will interact with other molecules.

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Under dynamic force spectroscopy, the bonds of a molecular system are subjected to controlled stretching until the bonds break. (Image courtesy of Jim DeYoreo, Berkeley Lab)

‘Molecular binding and unbinding events are much simpler than we have been led to believe from the standard model over the past decade,’ says Jim DeYoreo, a scientist with the Molecular Foundry, a DOE nanoscience center at Berkeley Lab who was one of the leaders of this research. ‘With our new model, we now have a clear means for measuring one of the most important parameters governing how materials and molecules bind together.'”

See the full article here.

A U.S. Department of Energy National Laboratory Operated by the University of California

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