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- Title
Living polynucleotides formed by the spontaneous aggregation of dilauroylphosphonucleosides.
- Authors
Baldelli Bombelli, F.; Berti, D.; Keiderling, U.; Baglioni, P.
- Abstract
This contribution concerns a structural investigation of dilauroylphosphonucleoside aggregates in aqueous solutions as a function of ionic strength and surfactant concentration. A micellar growth in the axial direction to form worm-like aggregates is observed as the surfactant concentration is increased, until the system shows a distinct viscoelastic behavior, which suggests the presence of a polymer-like network. Small angle neutron scattering (SANS) allows the structural properties of such micellar networks to be inferred below and above the threshold concentration of entanglement. A merging of SANS and SLS data in fact provides a spectral window corresponding to all the relevant length scales of the system in the direct space. These worm-like aggregates are characterized in terms of cross-sectional radius, persistence length and overall molar mass, while the micellar network can be described by its mesh size.
- Subjects
NUCLEIC acids; SURFACE active agents
- Publication
Applied Physics A: Materials Science & Processing, 2002, Vol 74, Issue 6, ps1270
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s003390101217