Disorder of DNA Structure in Quasinematic Layers of "Re-entrant" Twisted Phases

Yu. M. Yevdokimov, S. G. Skuridin, S. V. Semenov, V. I. Salyanov, E. I. Kats
2021 Liquid Crystals and their Application  
The CD spectra of double-stranded (ds) DNA dispersion particles with the "re-entrant" cholesteric structures formed in poly(ethyleneglycol)-containing solutions are compared. The high osmotic pressure of the solvent results in the dense packing DNA molecules and alteration of their secondary structure as well as a disorder of molecules in quasinematic layers of dispersion particles. Under these conditions, it is impossible to connect the adjacent ds DNA molecules by specific cross-links (nanobridges).
doi:10.18083/lcappl.2021.2.54 fatcat:lv3kz6hbsfefbd2u2aurwamsha