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DNA-lipid systems: A physical chemistry study
Provedor de dados: 56
Autores: Dias,R.; Antunes,F.; Miguel,M.; Lindman,S.; Lindman,B.
It is well known that the interaction of polyelectrolytes with oppositely charged surfactants leads to an associative phase separation; however, the phase behavior of DNA and oppositely charged surfactants is more strongly associative than observed in other systems. A precipitate is formed with very low amounts of surfactant and DNA. DNA compaction is a general phenomenon in the presence of multivalent ions and positively charged surfaces; because of the high charge density there are strong attractive ion correlation effects. Techniques like phase diagram determinations, fluorescence microscopy, and ellipsometry were used to study these systems. The interaction between DNA and catanionic mixtures (i.e., mixtures of cationic and anionic surfactants) was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: DNA; Cationic surfactants; Catanionic mixtures; Chitosan; Phase behavior; Polyelectrolyte-oppositely charged surfactant systems.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000500002