%0 Journal Article
%T Cyclodextrin-Based [1]Rotaxanes on Gold Nanoparticles
%A Liangliang Zhu
%A Hong Yan
%A Yanli Zhao
%J International Journal of Molecular Sciences
%D 2012
%I MDPI AG
%R 10.3390/ijms130810132
%X Transformation of mechanically interlocked molecules (e.g., rotaxanes and catenanes) into nanoscale materials or devices is an important step towards their real applications. In our current work, an azobenzene-modified ¦Â-cyclodextrin (¦Â-CD) derivative that can form a self-inclusion complex in aqueous solution was prepared. The self-included ¦Â-CD derivative was then functionalized onto a gold nanoparticle (AuNP) surface via a ligand-exchange reaction in aqueous solution, leading to the formation of AuNP-[1]rotaxane hybrids. Corresponding non-self-included ¦Â-CD derivative functionalized AuNPs were also developed in a DMF/H 2O mixture solution for control experiments. These hybrids were fully characterized by UV-vis and circular dichroism spectroscopies, together with transmission electron microscopy (TEM). The competitive binding behavior of the hybrids with an adamantane dimer was investigated.
%K azobenzene
%K complexation
%K cyclodextrin
%K gold nanoparticle
%K [1]rotaxane
%U http://www.mdpi.com/1422-0067/13/8/10132