Reentrant phase transitions of DNA-surfactant complexes
| dc.contributor.author | Krishnaswamy, Rema | |
| dc.contributor.author | Raghunathan, V.A. | |
| dc.contributor.author | Sood, A.K. | |
| dc.date.accessioned | 2006-05-17T05:51:41Z | |
| dc.date.available | 2006-05-17T05:51:41Z | |
| dc.date.issued | 2004 | |
| dc.description.abstract | Complexes of double-stranded DNA with the cationic surfactant cetyltrimethylammonium bromide have been studied using small angle x-ray diffraction at varying concentrations of DNA and the cosurfactant hexanol. At low DNA concentrations, an intercalated hexagonal (H<sub>I</sub><sup>c</sup>)-->lamellar (L<sub>alpha</sub><sup>c</sup>)-->inverted hexagonal (H<sub>II</sub><sup>c</sup>) transformation is found on increasing hexanol content. The H<sub>II</sub><sup>c</sup> structure is converted into L<sub>alpha</sub><sup>c</sup> on adding more DNA. Further increase in hexanol content leads to a phase separation in the surfactant solution, and a reentrant L<sub>alpha</sub><sup>c</sup>-->H<sub>II</sub><sup>c</sup>-->L<sub>alpha</sub><sup>c</sup> transition is observed as DNA concentration is increased. Such structural transformations of DNA-surfactant complexes, driven by DNA concentration, have not been reported until now. | en |
| dc.format.extent | 96902 bytes | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.citation | Physical Review E, 2004, Vol.69, 031905-031905 | en |
| dc.identifier.issn | ISSN 1550-2376 (online) | |
| dc.identifier.issn | 1539-3755 (print) | |
| dc.identifier.uri | http://hdl.handle.net/2289/1271 | |
| dc.language.iso | en | en |
| dc.publisher | The American Physical Society | en |
| dc.relation.uri | http://link.aps.org/abstract/PRE/v69/e031905 | en |
| dc.rights | (2004) by the American Physical Society | en |
| dc.title | Reentrant phase transitions of DNA-surfactant complexes | en |
| dc.type | Article | en |