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 ...

A macromolecule is a very large molecule of high molecular weight and is made up of smaller subunits known as monomers. The majority of common macromolecules include synthetic and natural polymers, ...

Proteins are made up of amino acid residues which are bound together by peptide bonds between the amino nitrogen (N) and the carboxyl group. Just 21 distinct amino acids exist, but they can bind ...

A rotaxane consisting of a crown ether threaded on a dumbbell-shaped structure (top). When light shines on it (model, bottom) the crown ether (C is yellow; H, white; and O, orange) moves along the ...

Catalysts play an indispensable role in modern manufacturing. More than 80% of all manufactured products, from ...