Dendrimers,nanodevices to create unique phenomena

Dendrimers are compact nanostructures created by manipulation of the molecular architecture. Their density or free volume distribution resembles that of a particle, albeit a low-density particle, that can create unique phenomena. We have found that dendrimer free volume can be manipulated by solvent change that will influence their utility in some applications. For example, it is hypothesized that their low density allows penetration by a covalently attached linear polymer. Manipulation of the dendrimer free volume or linear polymer mass can then be used to create a molecular machine. Also, their unique architecture was found to influence bulk phase separation of a dendritic – linear hybrid block copolymer. Cylinders or lamellae can be formed at exceptional compositions to allow tuning of the morphology beyond that found with linear–linear block copolymer systems. To cite this article: M.E. Mackay, C. R. Chimie 6 (2003).