Report

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

+ See all 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

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

Related Content