'Click'Synthesis of a Heterobifunctional Ferrocenyl Dendrimer with Molecular Recognition Properties and Influence of the Ferrocenyl Redox Potential on the Formation of Gold Nanoparticles

摘要

Alkyne protection by complexation of ethy-nylferrocene with dicobalt octacarbonyl followed by reg-ioselective acetylation, then deprotection and "click" reaction with a nona-azido-terminated arene-cored dendrimer leads to the heterodifunctional nona(l,2,3-triazolyl-acetylferrocenyl) dendrimer. Cyclic voltammetry of this metallodendrimer shows recognition of both ATP~(2-) and Pd~(2+). HAuCl_4 is reduced much more slowly to gold nanoparticles by the nona(triazolyl-acetylferrocenyl dendrimer than by the nona(triazolylferrocenyl) dendrimer due to the shift of redox potential in the new heterodifunctional dendrimer compared to that of the parent ferrocenyl dendrimer.