Where Organometallics and Dendrimers Merge: The Incorporation of Organometallic Species into Dendritic Molecules

Abstract

This review will describe the ongoing efforts being made to incorporate organometallic fragments into the framework of dendrimers. While purely dendritic organic molecules are well known and well studied, species incorporating organometallic moieties potentially offer many benefits that are not available to only organic containing dendrimers. For example, catalytic or redox active organometallic functions can be included in the dendritic framework and impart these characteristics onto the dendrimer. This report will give an overview of the latest developments in this field by highlighting selected examples that detail novel synthetic strategies or dendrimer construction methodologies, interesting practical applications or address specific problems associated with organometallic dendrimers.

Heterotrimetallic M−M′−M′′ Transition Metal Complexes Based on 1,3,5-Triethynylbenzene: Synthesis, Solid State Structure, and Electrochemical and UV−Vis Characterization. EPR Analysis of thein SituGenerated Associated Radical Cations

“…The only byproduct in this reaction could be identified as 1-(FcCtC)-3,5-[( t Bu 2 bpy)(CO) 3 ReCtC] 2 C 6 H 3 (9), which could be isolated in low yield (Experimental Section). Complex 8 gave a satisfactory elemental analysis and was characterized by 1 H, 13 C{ 1 H}, and IR spectroscopy. The structure of 8 in the solid state was determined by single-crystal X-ray diffraction.…”

“…A practical method to extend the conjugation of ethynylphenyl systems is given by the oxidative homocoupling of the appropriate terminal acetylene by the Eglinton-Glaser reaction. 21 Thus, complex 18 could directly be prepared in good yield by the oxidative 12); C19-C20, 1.179 (7); Re1-C20, 2.151( 6); Re1-C39, 1.952 (7); Re1-C40, 1.917( 6); Re1-C41, 1.889 (7); C39-O1, 1.165( 6); C40-O2, 1.161( 6); C41-O3, 1.189( 6); Re1-N1, 2.173(4);Re1-N2,2.177(4);C1-C11-C12,176.3 (13);C11-C12-C13, 175.9(15); C17-C42-C43, 176.6( 16); C15-C19-C20, 173.8( 5); C19-C20-Re1, 176.2(4); N1-Re1-N2, 73.59(15) (D1 ) centroid of C1-C5, D2 ) centroid of C6-C10).…”

Towards the controlled release of metal nanoparticles from biomaterials: Physico-chemical, morphological and bioactivity features of Cu-containing sol–gel glasses

“…One significant approach is to prepare nanoparticles in the presence of supporting materials like aluminium or titanium oxide, polymers, mesoporous silica and ceramics that can act as novel hosts for the immobilization of metallic nanoparticles. [10][11][12] Despite Au and Ag, the usefulness of Cu as an antibacterial agent has been known for a long time:…”

Microfibres and macroscopic films from the coordination-driven hierarchical self-assembly of cylindrical micelles

“…Such metal–ligand interactions can be reversible and dynamic, with a wide range of bond strengths and labilities dependent on the choice of metal, ligand and coordination mode. In synthetic materials, metal coordination chemistry has been used for the preparation of a variety of supramolecular and covalent polymers 8 9 10 11 12 13 14 , dendrimers 15 16 , macrocycles 17 18 , gels 19 20 21 22 , metal-organic frameworks 23 24 and protein assemblies 25 26 . However, the use of metal–ligand interactions is much less explored in the area of colloidal self-assembly.…”