The Freie Universitt Berlin is located in Berlin.
In a recent study, researchers at Freie Universitt Berlin, the DESY research center in Hamburg, Kiel University, and Kansas State University have shown how light can turn a molecule into a molecule with one handedness. It could be useful in the synthesis of compounds.
The study was published in Science Advances on December 7th.
The atomic spatial arrangement of molexes is either left- or right-handed. Professor Christiane Koch is from the Department of Physics at Freie Universitt Berlin.
The left and right-handed versions of the molecule are 888-609- 888-609- 888-609- 888-609- 888-609- When two hands come into contact in the world of human social interactions, the two participants will shake hands, whereas if a right and a left hand come together, the two participants will hold hands.
New information about how the molecule arranges itself in a left- or right-handed configuration is being discovered by scientists. Only one of the two possible en antiomers is present in the living cells. Koch said that the two mirror images of a molecule differed in many properties.
One enantiomer may smell like oranges while the other may smell like lemons. One enantiomer will be a cure for a disease and the other will be a dangerous poison. Koch says that controlling the formation of one specific handedness is an important goal.
Chiral chemicals are usually used to control the chirality. The control of product chirality using only light fields has not yet been carried out. It wasn't clear how this could be accomplished.
There is a procedure for absolute asymmetric synthesis that can be tested in an experiment.
The carbon molecule is made by exciting motion out of the plane of the molecule. The preparation step is called a pump. The molecule vibrates from above to below. The change can be measured by ionizing the molecule.
The pump step needs to be built with three different electric fields that have to be parallel to each other. Molecules at one orientation will start in a left-handed configuration while Molecules at another orientation will start in a right-handed one.
All molecule start out with the same handedness because of the combination of electric fields. The required combination of electric fields for the pump step can be achieved by a left and a right circularly Polarized pulse. Ionizing the molecule is theprobe step. It is possible to infer the molecule's handedness by measuring the direction in which electrons are emitted.
The proposed experiment can be done with existing setup provided by the circular polarization provided by FLASH at DESY.
Denis S. Tikhonov and his team studied the effects of pump-probe spectroscopy. There is a book titled "Sci Adv.ade0311."
Journal information: Science Advances
It was provided by Freie Universitt Berlin.
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