Organic open frameworks with well-defined micropore (pore dimensions below 2 nm) structure are attractive next-generation materials for gas sorption, storage, catalysis and molecular level separations ...

New research shows greater separation of molecules in smaller-sized artificial cells. New research shows that cell size and membranes may play a key role in regulating the distribution of molecules ...

Gel permeation chromatography (GPC) is a type of molecular sieving chromatography, where a sample is separated into its constituent parts based on their molecular sizes. This is accomplished by ...

Plastics are among the most successful materials of modern times. However, they also create a huge waste problem. Scientists produced different polymers from lipoic acid, a natural molecule. These ...

When chemists think about polymerization, they typically envision a wormlike polymer growing smoothly and continuously from a catalyst. But the actual view of how polymer growth unfolds has remained ...

Figure 1. Single-molecule junctions composed of the STM tip and a polymer. The study of single-molecule devices using a scanning tunneling microscope (STM) involves creating a junction (electrical ...

Polyesters close polyesterCondensation polymer made from two types of monomer, one with two –OH groups and one with two –COOH groups. are condensation polymers. The monomers and polymer can be ...

The molecular weight (MW) is the total atomic weight of a molecule. The MW is determined by summing the mass of all of the individual atoms in a molecule. The molecular weight of a polymer is directly ...

Imagine a plastic bag that can carry home your groceries, then quickly degrade without harming the environment. Or a super-strong, lightweight plastic for airplanes, rockets, and satellites that can ...

New research shows that cell size and membranes may play a key role in regulating the distribution of molecules inside cells. This discovery offers a new unconventional method for manipulating ...