Representation of Electrons in a Half Möbius Molecule
IBM Research and the University of Manchester
Recent discoveries by chemists reveal an intriguing new molecular structure, which exceeds the complexity of a traditional Möbius strip.
A Möbius strip is a twisted shape that requires an object, like an ant, to traverse it twice to return to its original side.
Igor Roncevic and his team at the University of Manchester have uncovered a more complex half-Möbius molecular structure. This breakthrough could revolutionize the manipulation of molecular shapes and topologies for various applications.
“This molecule is entirely novel and unexpected. Not only is it captivating that we have synthesized a molecule with unconventional topology, but we have also verified that such a structure is feasible, which was previously unconsidered,” he states.
To synthesize the molecule, the researchers combined 13 carbon atoms and two chlorine atoms into a ring on a gold substrate at ultra-low temperatures. Utilizing advanced atomic force and scanning tunneling microscopes, they precisely controlled individual atoms and analyzed the electron properties. Here, electrons do not remain rigidly attached but are diffused in a localized region, resembling tiny waves of matter.
The interactions among these electrons induced unprecedented twists within the molecule. A hypothetical quantum particle would need to revolve around the structure four times to return to its starting point.
Researchers demonstrated the ability to toggle the molecular state from left-handed to right-handed or to untwist it through small electromagnetic pulses. This innovation allows chemists to engineer molecular topology on demand.
To comprehend the newly discovered molecule and its potential existence, the researchers employed simulations on classical computers and an IBM quantum computer. Electron interactions are essential for introducing twists in molecules, which are challenging to simulate accurately on traditional platforms. However, quantum computers, built upon interacting quantum entities, can perform these simulations with greater precision, Roncevic notes.
According to team members, this research illustrates how quantum computing can tackle real-world chemistry challenges. Ivano Tavernelli from IBM emphasizes this point.
“This groundbreaking experiment integrates multiple facets of organic chemistry, surface science, nanoscience, and quantum chemistry,” asserts Gemma Solomon from the University of Copenhagen.
“This is an exciting endeavor that effectively translates abstract topological ideas into the field of molecular chemistry,” adds Kenichiro Itami from RIKEN, Japan, noting the technical significance of the research.
Kim Dong Ho, a professor at Yonsei University in South Korea, highlights the potential applications of shape-switchable molecules in sensor technology, indicating that they could toggle states in response to magnetic fields.
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Source: www.newscientist.com
