Journal
LIQUID CRYSTALS
Volume 49, Issue 7-9, Pages 1184-1193Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02678292.2021.2008033
Keywords
Columnar liquid crystals; surfactant-DNA complexes; polyelectrolyte complexes; macroion crystals
Funding
- Department of Science and Technology, Government of India
- Indian National Science Academy
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Cationic surfactants can form complexes with DNA in aqueous solutions, with a variety of columnar structures observed such as square, hexagonal, and superhexagonal. The formation of these different structures can be understood qualitatively in terms of the interplay between entropic and electrostatic contributions to their free energy.
Cationic surfactants form complexes with DNA in aqueous solutions. In the case of single-chain surfactants that self-assemble into micelles, these complexes have a two-dimensional columnar structure. We have studied the structural polymorphism of such complexes by varying the chain length of the surfactant. A variety of columnar structures are observed, such as square, hexagonal and superhexagonal. Formation of these different structures can be qualitatively understood in terms of the interplay between entropic and electrostatic contributions to their free energy.
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