Sentences with phrase «hydrogen bonds holding»

Organic chemist David Leigh of the University of Edinburgh, U.K., and colleagues had previously discovered that they could slow the spin of rotaxane rotors 1000-fold with oscillating electric fields, which apparently polarize and strengthen the weak hydrogen bonds holding a ring to its thread.

Not exact matches

Like water, it is held together by the powerful bonds between hydrogen and oxygen atoms, so ethanol can not travel through most petroleum pipelines.

The components are held together by relatively weak and reversible interactions — e.g., hydrogen bonding and aromatic stacking.

Individually they are weak, together they form the cement that holds together a whole new family of designer materials sings the praises of hydrogen bonds

In a hair strand, the keratin molecules are mainly held together by two forces: chemical cross-links between cysteines (a type of amino acid) and weaker hydrogen bonds.

When the water is drained away Berglund found that the fibres join together into networks held by hydrogen bonds, forming flat sheets of «nanopaper».

It turns out that the answer lies in the interaction between the bonds that hold the atoms in the water molecule together and the much weaker bonds, known as hydrogen bonds, that are the glue holding groups of water molecules together.

DNA's twisted ladder structure requires rungs of hydrogen bonds to hold it together; each bond is essentially made up of a single hydrogen atom that unites two molecules.

In this salt, dihydrogenphosphate chains run through the crystal, held together by hydrogen bonds.

When water (H2O) freezes into ice, the molecules are bound together in a crystalline lattice held together by hydrogen bonds.

These protein crystals are held together by hydrogen bonds, one of the weakest chemical bonds, and have an important role in defining the mechanical properties of silk.

Why it matters: At high pressures and low temperatures, like those found in permafrost or on the ocean's floor, water molecules organize into complex hydrate lattices that are held together by hydrogen bonds.

DNA (DeoxyriboNucleic Acid) a molecule composed of two chains of nucleic acid bases held together by hydrogen bonds in a pattern resembling a flexible twisted ladder.

The hydrogen - bond latch that holds the jaws together protects its active, or catalytic site.

The enzyme, Tang's team reports, resembles the video - game character «Pac - Man,» with two bowl - shaped halves joined by a hinge at one end and held closed, most of the time, by a latch of hydrogen bonds on the other end.

Without the hydrogen bonds of their nucleotide base pairs holding them together, they will repel and break apart.