Global Chirality in Rigid Decametallic Ruthenium Dendrimers

Kim, Mahn-Jong; MacDonnell, Frederick M.; Gimon-Kinsel, Mary E.; Bois, Thomas Du; Asgharian, Niloofar; Griener, James C.

doi:10.1002/(sici)1521-3757(20000204)112:3<629::aid-ange629>3.0.co;2-7

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…One particularly versatile method for assembling multiple metal centers using tetrapyrido[3,2- a :2′,3′- c :3′′,2′′- h :2′′′,3′′′- j ]phenazine (tpphz) as a bridging ligand was first reported by Knapp et al 37 and Bolger et al 38 , 39 This ligand has been used as a building block for mono-, 38 di-, 37 , 38 tetra-, 40 – 42 and polynuclear 37 , 43 Ru( ii ) constructs as well as stereochemically pure, 44 asymmetric homodinuclear, 45 topological, 46 mixed valent, 47 and heterodinuclear 48 – 53 complexes. Additionally, the CuHETPHEN method pioneered by Schmittel et al 54 , 55 has been used by several groups, 56 – 69 including our own, 70 , 71 to prepare analytically pure heteroleptic Cu( i ) bis(phen) complexes (phen = 1,10-phenanthroline) that can serve as individual building blocks in the piecewise assembly of supramolecular constructs with absolute synthetic control.…”

Section: Introductionmentioning

confidence: 99%

Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

et al. 2018

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“…This renders structural characterization of these systems difficult. However, the chirality of similar decanuclear Ru(II) dendrimers can be controlled using substitutionally inert Ru(II) trisdiimine complexes as chiral synthons (see below) [49]. The decanuclear complexes exhibit extraordinary large molar absorption coefficients in the UV and visible spectral region.…”

Section: Fig 8 Heterometallic Tetrameric Complex Reported By Balzani ...mentioning

confidence: 99%

Non-Covalent Synthesis of Metallodendrimers

Manen

Veggel

Reinhoudt

2001

Topics in Current Chemistry

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The field of dendrimers has undergone an explosive growth since the first dendritic structures were reported two decades ago. These three-dimensional, highly branched macromolecules have attracted interest from such diverse areas as polymeric, organic, inorganic, biomedical, theoretical, and physical chemistry. Future applications were already hypothesized from the early days of dendrimer research. From an application point of view, the incorporation of a range of metals into the dendritic framework is of particular interest. The resulting metallodendrimers might be applied in fields such as catalysis, sensors, medical diagnosis, light-harvesting devices, and nanoparticles. In this chapter, metallodendrimers are discussed in which the metals are essential for maintaining the dendritic structure. This means that all the dendrimers described have been assembled non-covalently using coordination chemistry. Although this restriction narrows the metallodendrimer field significantly, there is still an enormous variety in the architecture of reported non-covalent metallodendrimers. Where possible, emphasis is placed on the characterization methods and specific behavior of the dendrimers, because characterization is of utmost importance in establishing their often complicated three-dimensional structure. Finally, we have emphasized properties that may lead to future applications.

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“…Recently, these complexes have been widely used for cellular imaging and therapeutics, as they are known to have specific interactions with DNA. [9][10][11] Ruthenium(II) polypyridyl complexes exhibit axial chirality and the right-and left-handed configurations of the octahedral complexes are referred to as Δand Λ-enantiomers. [5][6][7][8] They are also used to construct various supramolecular assemblies.…”

Section: Introductionmentioning

confidence: 99%

Enantiomeric Separations of Ruthenium (II) Polypyridyl Complexes Using HPLC With Cyclofructan Chiral Stationary Phases

et al. 2014

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The enantiomeric separation of 21 ruthenium (II) polypyridyl complexes was achieved with a novel class of cyclofructan-based chiral stationary phases (CSPs) in the polar organic mode. Aromatic derivatives on the chiral selectors proved to be essential for enantioselectivity. The R-napthylethyl carbamate functionalized cyclofructan 6 (LARIHC CF6-RN) column proved to be the most effective overall, while the dimethylphenyl carbamate cyclofructan 7 (LARIHC CF7-DMP) showed complementary selectivity. A combination of acid and base additives was necessary for optimal separations. The retention factor vs. acetonitrile/methanol ratio plot showed a U-shaped retention curve, indicating that different interactions take place at different polar organic solvent compositions. The separation results indicated that π-π interactions, steric effects, and hydrogen bonding contribute to the enantiomeric separation of ruthenium (II) polypyridyl complexes with cyclofructan chiral stationary phases in the polar organic mode.

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Global Chirality in Rigid Decametallic Ruthenium Dendrimers

Cited by 4 publications

References 30 publications

Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy

Non-Covalent Synthesis of Metallodendrimers

Enantiomeric Separations of Ruthenium (II) Polypyridyl Complexes Using HPLC With Cyclofructan Chiral Stationary Phases

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