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Depending on the relative amounts of different building-block molecules, it is possible to create different sandwich and wheel topologies (shown above in micrographs and

American Chemical Society. Copyright 2016

Abstract:
A great childhood pleasure is playing with Legos® and marveling at the variety of structures you can create from a small number of basic elements. Such control and variety of superstructures is a goal of polymer chemists, but it is hard to regulate their specific size and how the pieces fit together. This week in ACS Central Science, researchers report a simple system to make different nano-architectures with precision.

Fun with Lego (molecules)

Washington, DC | Posted on January 28th, 2016

Using a variety of highly efficient chemical transformations and other techniques to ensure high yields and purity, Stephen Z. D. Cheng, Yiwen Li, Wen-Bin Zhang and coworkers designed systems to create giant molecules with 'orthogonal' ends, meaning that they only fit together with a specific partner just like Legos®. Depending on the relative amounts of different building-block molecules, these molecules come together in different superstructures -- ranging from cubes to wheels and sandwiches. Eventually, they could be employed in device-creation, where it is crucial to have precise control over the positions of the components.

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The authors acknowledge funding from the National Science Foundation.

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About American Chemical Society
The American Chemical Society is a nonprofit organization chartered by the U.S. Congress. With more than 158,000 members, ACS is the world's largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.

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