Navigation Links
Chemists create molecular polyhedron -- and potential to enhance industrial and consumer products
Date:7/21/2011

Chemists have created a molecular polyhedron, a ground-breaking assembly that has the potential to impact a range of industrial and consumer products, including magnetic and optical materials.

The work, reported in the latest issue of the journal Science, was conducted by researchers at New York University's Department of Chemistry and its Molecular Design Institute and the University of Milan's Department of Materials Science.

Researchers have sought to coerce molecules to form regular polyhedrathree-dimensional objects in which each side, or face, is a polygonbut without sustained success. Archimedean solids, discovered by the ancient Greek mathematician Archimedes, have attracted considerable attention in this regard. These 13 solids are those in which each face is a regular polygon and in which around every vertexthe corner at which its geometric shapes meetthe same polygons appear in the same sequences. For instance, in a truncated tetrahedron, the pattern forming at every vertex is hexagon-hexagon-triangle. The synthesis of such structures from molecules is an intellectual challenge.

The work by the NYU and University of Milan chemists forms a quasi-truncated octahedron, which also constitutes one of the 13 Archimedean solids. Moreover, as a polyhedron, the structure has the potential to serve as a cage-like framework to trap other molecular species, which can jointly serve as building blocks for new and enhanced materials.

"We've demonstrated how to coerce molecules to assemble into a polyhedron by design," explained Michael Ward, chair of NYU's Department of Chemistry and one of the study's co-authors. "The next step will be to expand on the work by making other polyhedra using similar design principles, which can lead to new materials with unusual properties."

The research team's creation relies on a remarkably high number of hydrogen bonds72to assemble two kinds of hexagonal molecular tiles, four each, into a truncated octahedron, which consists of eight molecular tiles. Although chemists often use hydrogen bonds because of their versatility in building complex structures, these bonds are weaker than those holding atoms together within the molecules themselves, which often makes larger scale structures constructed with hydrogen bonds less predictable and less sustainable. The truncated octahedron discovered by the NYU team proved to be remarkably stable, however, because the hydrogen bonds are stabilized by the ionic nature of the molecules and because no other outcomes are possible. In fact, the truncated octahedra assemble further into crystals that have nanoscale pores, resembling a class of well-known compounds called zeolites, which are made from inorganic components.

Because the structure also serves as a molecular cage, it can house, or encapsulate, other molecular components, giving future chemists a vehicle for developing a range of new compounds.


'/>"/>

Contact: James Devitt
james.devitt@nyu.edu
212-998-6808
New York University
Source:Eurekalert

Related biology technology :

1. Northwestern chemists take gold, mass-produce Beijing Olympic logo
2. TIBCO Speeds Drug Discovery for Chemists
3. Brown chemists create more efficient palladium fuel cell catalysts
4. Spectrum Blue Steel partners with Famous Chemists for Procuring Profitable Applications from Garbage Using the Biosphere MKV and Electrostatic Precipitators
5. Brown chemists report promising advance in fuel-cell technology
6. University of Toronto chemists make breakthrough in nanoscience research
7. IU chemists develop new light switch chloride binder
8. Metal-mining bacteria are green chemists
9. UCLA chemists, engineers achieve world record with high-speed graphene transistors
10. UC San Diego chemists produce first high-resolution RNA nano square
11. NPL to create encyclopedia for space nanomaterials
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2017)... Boston, MA (PRWEB) , ... June 22, 2017 ... ... Kingdom-based social media network RegMedNet has produced a Spotlight ... has featured scholarly reviews and perspectives by leading experts on the unique regulatory ...
(Date:6/22/2017)... ... ... Charm Sciences, Inc. is pleased to announce that its Charm Amphenicol (AMPH) ... a screening test at dairies and farms for raw commingled cow milk. The test ... Lite system. These systems are a combination incubator and reader in one. , “The ...
(Date:6/20/2017)... , June 20, 2017  Kibow Biotech Inc., ... to announce the issuance of a new patent covering ... hyperuricemia by the U.S. Patent and Trademark Office on ... winner of the Buzz of Bio award in 2014 ... akin to developing non-drug approaches to chronic disease. Renadyl™, ...
(Date:6/19/2017)... , ... June 19, 2017 , ... ... all service activities supporting EDETEK’s products including training, implementation, support, and client process ... his new role. He has previously held leadership roles for service providers and ...
Breaking Biology Technology:
(Date:4/11/2017)... No two people are believed to ... York University Tandon School of Engineering and Michigan ... partial similarities between prints are common enough that ... and other electronic devices can be more vulnerable ... in the fact that fingerprint-based authentication systems feature ...
(Date:4/5/2017)... , April 4, 2017 KEY FINDINGS ... anticipated to expand at a CAGR of 25.76% during ... diseases is the primary factor for the growth of ... report: https://www.reportbuyer.com/product/4807905/ MARKET INSIGHTS The global ... product, technology, application, and geography. The stem cell market ...
(Date:3/30/2017)... March 30, 2017 Trends, opportunities and forecast ... behavioral), by technology (fingerprint, AFIS, iris recognition, facial recognition, ... others), by end use industry (government and law enforcement, ... and banking, and others), and by region ( ... Asia Pacific , and the Rest ...
Breaking Biology News(10 mins):