Screening hypochromism of chromophores in macromolecular biostructures

The regular arrangement of chromophores in macromolecules and clusters at distances less than the wavelength leads to the effect of screening hypochromism. This effect is due to a fall in the mean absorption probability, i.e., the mutual shielding of chromophores from light in the competition for a given photon. In macromolecular biostructures, this effect, together with other factors, can cause a decrease in the molar absorption coefficient; however, using the screening model alone, it is possible to predict the hyperchromism of oligonucleotides DNA, proteins, aggregates of aromatic hydrocarbons; and some other structures.