Dendritic catalysis: Major concepts and recent progress

Méry, Denise; Astruc, Didier

doi:10.1016/j.ccr.2005.11.012

Cited by 224 publications

(62 citation statements)

References 138 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Introduction of catalysts at the termini of dendrimers is a useful strategy allowing to recover and re-use the catalyst. 48,49 Indeed, large molecules are easy to separate from reaction media by precipitation or ultra-centrifugation, contrary to small monometallic complexes. One problem, however, is that metal sites are not so easily accessible at the termini of dendritic branches because of steric inhibition that slows down reaction rates.…”

Section: Electron-reservoir Complexes As Redox Catalystsmentioning

confidence: 99%

Organometallic Electron-Reservoir Complexes. Concepts and Applications

Astruc¹

2007

Bulletin of the Chemical Society of Japan

Self Cite

View full text Add to dashboard Cite

The 19-electron complexes [FeI(η5-C5R5)(η6-arene)] (R=H, arene = C6Me6, 1,3,5-tBu3C6H3; R=Me, arene = C6Me6, C6Et5H) are thermally stable and serve as strong single-electron reductant in a variety of stoichiometric and catalytic electron-transfer processes that are detailed in this review (prototype: [FeI(η5-C5H5)(η6-C6Me6)]). They are electron-reservoirs because their redox potential is very negative and they form a redox system for which both redox forms are stable. In this sense, they are Green redox reagents, since the oxidized form is recovered after use and is even frequently catalytically used. Symmetrically, the 17-electron complex [FeIII(η5-C5R5)(η6-C6Me6)][SbCl6]2, the strongest organometallic single-electron oxidant with a redox potential 1 V more positive than that of its isoelectronic ferrocenium analog, is a reservoir of electron hole.

show abstract

Section: Electron-reservoir Complexes As Redox Catalystsmentioning

confidence: 99%

Organometallic Electron-Reservoir Complexes. Concepts and Applications

Astruc¹

2007

Bulletin of the Chemical Society of Japan

Self Cite

View full text Add to dashboard Cite

show abstract

“…Metallodendrimers with important electronic, magnetic and catalytic properties were reported in the literature [6] and various families of metallodendrimers have been used as macromolecular supports in catalysis [7]. Dendrimers were also used as encapsulating agents for insoluble materials [8,9], models for self-assembled monolayers, colloids or nanoclusters [3,10] as well as chemiresistors [6,11].…”

Section: Introductionmentioning

confidence: 99%

“…Electroactive dendrimers were shown to be very important candidates for use in practical applications such as electrontransfer mediators, energy converters, ion sensors or electronic devices [3,6,[12][13][14][15][16]. Voltammetry enables the study of the surface-confined electroactive dendrimer films.…”

Section: Introductionmentioning

confidence: 99%

“…Voltammetry enables the study of the surface-confined electroactive dendrimer films. It has been shown that the dendrimer can influence the microenvironment around the electroactive centers and these studies were focused on both the dendritic wedge effect on the electroactive center (core) and the redox behaviour of multiple electroactive sites on the higher generation dendrimer surfaces [3,[12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…Electrochemistry provides information on electron transfer between electroactive moiety and electrode surface, where a decrease in the peak current, an increase in the potential, and a broadening of the voltammetric wave are related to the degree of the inhibition or electron transfer, and due to their high sensitivity, voltammetric methods have been successfully used to study the redox behaviour of dendrimer electrode surface modifiers [3,6,[12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metallo-functionalized first-generation salicylaldimine poly(propylenimine) tetraamine dendrimers: Electrochemical study and atomic force microscopy imaging

Martinovic

Chiorcea-Paquim

Diculescu

et al. 2008

Electrochimica Acta

View full text Add to dashboard Cite

The adsorption and the redox processes of two first-generation salicylaldiamine dendritic ligands and their copper, cobalt and nickel metallofunctionalized complexes have been studied at two types of carbon electrode surface. Glassy carbon (GC) was used in an electrochemistry study and highly oriented pyrolitic graphite (HOPG) in ex situ atomic force microscopy (AFM) imaging. All salicylaldimine ligands and their metallofunctionalized complexes adsorb on the surface of the HOPG electrode, resulting in the formation of nanoclusters and films, which vary between 0.9 and 6 nm in size, depending on the metallo-functionalized salicylaldimine dendrimer chemical composition and solution concentration. Differential pulse voltammetry of the surface-confined films has shown that the anodic reactions observed correspond to the oxidation of the hydroxyl groups present in the ligand structure of all compounds. However, by following the changes in peak currents, potentials and width at half height it has been shown that destabilization of the ligand internal structure occurred in the metallo-functionalized complexes depending on the metal involved. The electrochemical behaviour of the surface-confined films observed in buffer solution was related to the morphology, obtained by AFM, of the immobilised first-generation salicylaldiamine dendritic ligands and corresponding salicylaldimine metallo-functionalized complexes.

show abstract

Metal‐Containing Polymers

Abd‐El‐Aziz

2012

Encyclopedia of Polymer Science and Technology

View full text Add to dashboard Cite

show abstract

Dendritic catalysis: Major concepts and recent progress

Cited by 224 publications

References 138 publications

Organometallic Electron-Reservoir Complexes. Concepts and Applications

Organometallic Electron-Reservoir Complexes. Concepts and Applications

Metallo-functionalized first-generation salicylaldimine poly(propylenimine) tetraamine dendrimers: Electrochemical study and atomic force microscopy imaging

Metal‐Containing Polymers

Contact Info

Product

Resources

About