Electron Transfer and Molecular Recognition in Metallocene‐Containing Dendrimers

Abstract

This manuscript provides a summary of the relatively large body of research on the preparation and characterization of dendrimers containing (1) multiple copies of metallocene residues on their surfaces or (2) a single metallocene residue at their core. Special emphasis is placed on dendrimers functionalized with either ferrocene or cobaltocenium groups, because their reversible electrochemistry makes them particularly attractive to the author's group. Dendrimers containing multiple, peripheral metallocene residues are of interest to develop multivalent interactions with suitable receptors or receptor assemblies. With dendrimers containing a single metallocene at their cores, the key questions relate to the effects of the dendritic mass on their properties and degree of encapsulation or site isolation. We focused our work on the electrochemical properties of these dendrimers as well as on their use as guests in molecular recognition processes with freely diffusing hosts.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

A Nanoscopic 3D Polyferrocenyl Assembly: The Triacontakaihexa(ferrocenylmethylthiolate) [Ag48(μ4‐S)6(μ2/3‐SCH2Fc)36]

“…Examples of these successes include the functionalization of dendrimers, [1] polymers, [2] and the surfaces of metal nanoparticles [3] and supramolecular assemblies [4] with these redox active moieties. Examples of these successes include the functionalization of dendrimers, [1] polymers, [2] and the surfaces of metal nanoparticles [3] and supramolecular assemblies [4] with these redox active moieties.…”

A Convergent Approach for the Generation of Dendrimers Containing the ­[Ru3O(CH3COO)6] Electroactive Core

“…This is particularly relevant for catalytic pur-poses [20,21] or for mimicking biologic systems such as the mitochondrial or photosynthetic electron-transport chain. [1][2][3][4][5] …”

“…[1][2][3][4][5] Firstly, the interest in this kind of macromolecules arose from the aesthetic appeal and from the challenge to synthesize nanometer-sized species in a controlled fashion, following a "bottom-up" approach. Rapidly, this class of compounds attracted attention because of their ability to mimic biological systems or to feature valuable functions, as catalysts and drug delivery agents.…”

One-pot synthesis of multisubstituted imidazoles catalyzed by Dendrimer-PWAn nanoparticles under solvent-free conditions and ultrasonic irradiation

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