Water molecules have very high dipole moment.
Andrei Geim and Konstantin Novoselov discovered how to make the water “dead” and deprived of its unique solvent properties, experimenting with the finest “sandwiches” made of graphite and boron nitride, said in an article published in the journal Science.
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“Dead water” is not just an interesting scientific phenomenon, it has very specific applications to other Sciences, especially biology. It will help us understand why water is so important for the existence of life. Given the role that water plays in the formation of protein molecules, we can say that a thin layer of water — sculptors of life in the literal and figurative sense,” says Andre Geim from the University of Manchester (UK).
Water, as the scientists explain, today remains one of the most mysterious substances on Earth. Unlike “neighbors” on the periodic table, a compound of hydrogen with oxygen has an abnormally high boiling point and freezing point, specific heat, and an unusual ability to dissolve a number of organic and inorganic compounds.
This “skill” of water, in turn, is associated with a different physical property — high electrical dipole moment. This word scientists understand how distributed positive and negative charges on the molecule. Water molecules have very high dipole moment because the electrons in it “attracted” to the oxygen atom and positively charged hydrogen atoms are removed from them.Scientists have long wondered whether it retains these properties in cases where water molecules are stacked in several layers, or they change into something completely different.
Geim, Novoselov and their colleagues at the University solved this problem by experimenting with a kind of “sandwich,” consisting of ultrathin plates of graphite and two-dimensional films of boron nitride arranged about the same as graphene, whose discovery of the Russian-British physicists received the Nobel prize in 2010.