The role of the degree of polymerization in the chiroptical properties of dynamic asymmetric poly(diphenylacetylene)s

Non-symmetric poly(diphenylacetylene)s (PDPAs) show a strong relationship between the size of the macromolecules and their electronic circular dichroism (ECD) spectra. Thus, polymers and oligomers of PDPAs with the same screw sense excess show opposite ECD spectra. This is due to the complex nature of the ECD spectra, where the main electronic transitions depend on the degree of polymerization (DP).

Automated summary

There is a significant correlation between the size of non-symmetric poly(diphenylacetylene)s (PDPAs) and their electronic circular dichroism (ECD) spectra. Consequently, polymers and oligomers of PDPAs with the same screw sense excess exhibit reverse ECD spectra. This is attributed to the intricate nature of ECD spectra, which primarily rely on the degree of polymerization (DP).