Dynamic reactions of liposomes.

Dynamic chemical reactions at the surface of liposomes are of fundamental interest to the understanding of physiological processes at biological membranes and can be exploited to prepare responsive soft materials. In this paper we describe a covalent yet reversible reaction between liposomes. To this end we explored the reversible thioester exchange reaction of membrane embedded amphiphilic thioesters with dithiols from solution.

Ionic ligand mediated electrochemical charging of gold nanoparticle assemblies.

We demonstrate that ionic surface functionalization is well-suited for controlling the electrochemical charging of nanoparticle assemblies. Gold nanoparticles approximately 2 nm in diameter were functionalized with between 0 and approximately 3.3 cationic thiols per particle and the coupled motion of ions and electrons during redox cycling (charging) was followed in situ using an electrochemical quartz-crystal microbalance.