Category archives: Chemistry

Excited-state aromaticity

Excited-state aromaticity

ChemistryMaterials

By DIPC

We usually take for granted that aromaticity is something that belongs to the ground state of a molecule; but the fact is that nothing forbids aromaticity appearing in an excited state. In the same way that molecular properties are largely affected by the ground-state aromaticity, excited-state aromaticity can guide the understanding of excited-state processes, the […]

Direct observation of dynamic tube dilation in entangled polymer blends

Direct observation of dynamic tube dilation in entangled polymer blends

ChemistryCondensed matterMaterialsPhysics

By DIPC

One of the unique features of the chemistry of carbon (and, to some extent, silicon) is its ability to form long chains of atoms. Polymers are substances that have macromolecules composed of many repeating units (known as ‘mers’). Many naturally occurring substances are polymers, including rubber and many substances based on glucose, such as the […]

First nondestructive enantioselective detection technique

First nondestructive enantioselective detection technique

ChemistryCondensed matterMaterialsNanotechnology

By DIPC

If a nucleus has a nonzero spin, it behaves as a small magnet. Therefore, in an external magnetic field, the nuclear magnetic moment vector precesses about the field direction but only certain otientations are allowed by quantum rules. Thus, for hydrogen (spin 1/2) there are two possible states in the presence of a field, each […]

Diradical character a condition for stable n-type doped organic conducting materials

Diradical character a condition for stable n-type doped organic conducting materials

ChemistryCondensed matterMaterials

By DIPC

Many aromatic compounds can be made into organic semiconductors by doping them with a substance such as iodine, thereby producing mobile carriers of electric charge. This is analogous to the doping of silicon in an ordinary semiconductor. The benefits of using organic compounds are evident, namely, the resources are available everywhere, extremely cheap, and there […]

Hexagonal boron nitride monolayer films can be successfully grown on a curved Ni(1 1 1) substrate

Hexagonal boron nitride monolayer films can be successfully grown on a curved Ni(1 1 1) substrate

ChemistryCondensed matterMaterialsPhysics

By DIPC

Since the discovery of graphene, a wide diversity of atomic-layer-thick, two-dimensional (2D) materials with varied properties have emerged. Of particular interest are those that exhibit semiconducting behavior, such as hexagonal boron nitride (hBN). hBN is isoelectronic to graphene and has also a honeycomb lattice formed by alternating nitrogen and boron atoms, but in contrast to […]

A universal theory for heteropolymer design

A universal theory for heteropolymer design

BiochemistryChemistryMaterials

By Invited Researcher

On our unique planet, life evolved under the pressure of natural selection. The evolution theory of Darwin demonstrates the incredible plasticity of the living organism. For millions of years, living organisms explored the conformational universe of proteins introducing new structures and function through genetic mutations. The genetic modifications are translated into the sequence of amino-acids […]