Report

Self-Assembly of Flat Nanodiscs in Salt-Free Catanionic Surfactant Solutions

See allHide authors and affiliations

Science  05 Feb 1999:
Vol. 283, Issue 5403, pp. 816-819
DOI: 10.1126/science.283.5403.816

You are currently viewing the abstract.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution

Abstract

Discs of finite size are a very rare form of stable surfactant self-assembly. It is shown that mixing of two oppositely charged single-chain surfactants can produce rigid nanodiscs as well as swollen lamellar liquid crystals with frozen bilayers. The crucial requirement for obtaining nanodisc self-assembly is the use of H+ and OH as counterions. These counterions then form water and lower the conductivity to 10 microsiemens per centimeter. In the case of cationic component excess, a dilute solution of nanodiscs is in thermodynamic equilibrium with a lamellar phase. The diameter of the cationic nanodiscs is continuously adjustable from a few micrometers to 30 nanometers, with the positive charge located mainly around the edges.

  • * To whom correspondence should be addressed. E-mail: zemb{at}nanga.saclay.cea.fr

View Full Text