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UO-Berkeley Lab unveil new nano-sized synthetic scaffolding technique
Date:9/2/2014

EUGENE, Ore. -- Scientists, including University of Oregon chemist Geraldine Richmond, have tapped oil and water to create scaffolds of self-assembling, synthetic proteins called peptoid nanosheets that mimic complex biological mechanisms and processes.

The accomplishment -- detailed this week in a paper placed online ahead of print by the Proceedings of the National Academy of Sciences -- is expected to fuel an alternative design of the two-dimensional peptoid nanosheets that can be used in a broad range of applications. Among them could be improved chemical sensors and separators, and safer, more effective drug-delivery vehicles.

Study co-author Ronald Zuckermann of the Molecular Foundry at Lawrence Berkeley National Laboratory (LBNL) first developed these ultra-thin nanosheets in 2010 using an air-and-water combination.

"We often think of oil on water as something that is environmentally bad when, in fact, my group over the past 20 years has been studying the unique properties of the junction between water and oil as an interesting place for molecules to assemble in unique ways -- including for soaps and oil dispersants," said Richmond, who holds a UO presidential chair. "This study shows it is also a unique platform for making nanosheets."

Lead authors on the project were Ellen J. Robertson, a doctoral student in Richmond's lab at the time of the research, and Gloria K. Oliver, a postdoctoral researcher at LBNL. Robertson is now a postdoctoral researcher at LBNL.

Work in Richmond's lab helped to identify the mechanism behind the formation of the nanosheets at an oil-water interface.

"Supramolecular assembly at an oil-water interface is an effective way to produce 2D nanomaterials from peptoids because that interface helps pre-organize the peptoid chains to facilitate their self-interaction," said Zuckermann, a senior scientist at LBNL's Molecular Foundry in a news release. "This increased under
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Contact: Jim Barlow
jebarlow@uoregon.edu
541-346-3481
University of Oregon
Source:Eurekalert

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