Brian J. J. Timmer
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View article: Holistic functional biomimetics: a key to make an efficient electrocatalyst for water oxidation
Holistic functional biomimetics: a key to make an efficient electrocatalyst for water oxidation Open
The performance of a water-oxidation electrocatalyst is determined by the synergistic effect of an active site structure, e − transfer system, and H + transport system. The holistic functional biomimetic is a promising design strategy.
View article: CCDC 1810763: Experimental Crystal Structure Determination
CCDC 1810763: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Promoting Proton Transfer and Stabilizing Intermediates in Catalytic Water Oxidation via Hydrophobic Outer Sphere Interactions
Promoting Proton Transfer and Stabilizing Intermediates in Catalytic Water Oxidation via Hydrophobic Outer Sphere Interactions Open
The outer coordination sphere of metalloenzyme often plays an important role in its high catalytic activity, however, this principle is rarely considered in the design of man‐made molecular catalysts. Herein, four Ru‐bda (bda=2,2′‐bipyridi…
View article: Isolation and Identification of Pseudo Seven-Coordinate Ru(III) Intermediate Completing the Catalytic Cycle of Ru-bda Type of Water Oxidation Catalysts
Isolation and Identification of Pseudo Seven-Coordinate Ru(III) Intermediate Completing the Catalytic Cycle of Ru-bda Type of Water Oxidation Catalysts Open
Isolation of RuIII-bda (17-electron specie) complex with an aqua ligand (2-electron donor) is challenging due to violation of the 18-electron rule. Although considerable efforts have been dedicated to mechanistic studies of water oxidation…
View article: A Simple Strategy to Obtain Synthetic Ca<sup>2+</sup>‐Dependent Lectin Mimics
A Simple Strategy to Obtain Synthetic Ca<sup>2+</sup>‐Dependent Lectin Mimics Open
Many lectins require a Ca 2+ ion as structure directing co‐factor to function as carbohydrate binders. Such lectins are implicated in various important biological processes such as inflammation and infection, yet a simple strategy to mimic…
View article: A Synthetic Galectin Mimic
A Synthetic Galectin Mimic Open
Galectins are a galactoside specific subclass of carbohydrate binding proteins (lectins) involved in various cellular activities, certain cancers, infections, inflammations, and many other biological processes. The molecular basis for the …
View article: A Synthetic Galectin Mimic
A Synthetic Galectin Mimic Open
Galectins are a galactoside specific subclass of carbohydrate binding proteins (lectins) involved in various cellular activities, certain cancers, infections, inflammations, and many other biological processes. The molecular basis for the …
View article: CCDC 2078670: Experimental Crystal Structure Determination
CCDC 2078670: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Off‐Set Interactions of Ruthenium–bda Type Catalysts for Promoting Water‐Splitting Performance
Off‐Set Interactions of Ruthenium–bda Type Catalysts for Promoting Water‐Splitting Performance Open
O−O bond formation with Ru(bda)L 2 ‐type catalysts is well‐known to proceed through a bimolecular reaction pathway, limiting the potential application of these catalysts at low concentrations. Herein, we achieved high efficiencies with mon…
View article: Off‐Set Interactions of Ruthenium–bda Type Catalysts for Promoting Water‐Splitting Performance
Off‐Set Interactions of Ruthenium–bda Type Catalysts for Promoting Water‐Splitting Performance Open
O−O bond formation with Ru(bda)L 2 ‐type catalysts is well‐known to proceed through a bimolecular reaction pathway, limiting the potential application of these catalysts at low concentrations. Herein, we achieved high efficiencies with mon…
View article: Molecular Water Oxidation Catalysis: Characterization of Subnanosecond Processes and Ruthenium “Green Dimer” Formation
Molecular Water Oxidation Catalysis: Characterization of Subnanosecond Processes and Ruthenium “Green Dimer” Formation Open
Dye-sensitized photoelectrochemical cells were prepared with popular ruthenium sensitizer (RuP) and ruthenium catalyst (RuCAT) coadsorbed on mesoporous titania. The cells were studied in 0.1 M Na2SO4(aq) by spectroscopic methods, including…
View article: Stable CAAC-based Ruthenium Complexes for Dynamic Olefin Metathesis Under Mild Conditions
Stable CAAC-based Ruthenium Complexes for Dynamic Olefin Metathesis Under Mild Conditions Open
A series of olefin metathesis catalysts bearing cyclic (alkyl)(amino)carbene (CAAC) ligands of varying size and steric demand has been synthesized and evaluated in ring-closing-, self-, and cross-metathesis reactions at room temperature. T…
View article: Stable CAAC-based Ruthenium Complexes for Dynamic Olefin Metathesis Under Mild Conditions
Stable CAAC-based Ruthenium Complexes for Dynamic Olefin Metathesis Under Mild Conditions Open
A series of olefin metathesis catalysts bearing cyclic (alkyl)(amino)carbene (CAAC) ligands of varying size and steric demand has been synthesized and evaluated in ring-closing-, self-, and cross-metathesis reactions at room temperature. T…
View article: Anion binding properties of a hollow PdL-cage
Anion binding properties of a hollow PdL-cage Open
A hollow ‘PdL’ cage disintegrates in the presence of coordinating anions, but binds to the non-coordinating anions BF4−, ClO4− and NO3− with selectivity towards nitrate.
View article: Comparison of [Pd<sub>2</sub>L<sub>4</sub>][BF<sub>4</sub>]<sub>4</sub> cages for binding of <i>n</i>-octyl glycosides and nitrate (L = isophthalamide or dipicolinamide linked dipyridyl ligand)
Comparison of [Pd<sub>2</sub>L<sub>4</sub>][BF<sub>4</sub>]<sub>4</sub> cages for binding of <i>n</i>-octyl glycosides and nitrate (L = isophthalamide or dipicolinamide linked dipyridyl ligand) Open
Isophthalamide (X = CH) and a dipicolinamide (X = N) derived dipyridyl ligands both form a [Pd2L4][BF4]4 cage in solution, but only the isophthalamide derived cage easily binds to glycosides and nitrate.
View article: Electronic Influence of the 2,2′-Bipyridine-6,6′-dicarboxylate Ligand in Ru-Based Molecular Water Oxidation Catalysts
Electronic Influence of the 2,2′-Bipyridine-6,6′-dicarboxylate Ligand in Ru-Based Molecular Water Oxidation Catalysts Open
Water provides an ideal source for the production of protons and electrons required for generation of renewable fuels. Among the most-prominent electrocatalysts capable of water oxidation at low overpotentials are Ru(bda)L2-type catalysts.…
View article: Intermolecular π–π Stacking Interactions Made Visible
Intermolecular π–π Stacking Interactions Made Visible Open
Mixing the liquids hexafluorobenzene (1) and 1,3,5-trimethylbenzene (mesitylene, 2) results in a crystalline solid with a melting point of 34 °C. The solid consists of alternating π-π stacked pillars of both aromatics. This simple experime…
View article: Cover Feature: Molecular Functionalization of NiO Nanocatalyst for Enhanced Water Oxidation by Electronic Structure Engineering (ChemSusChem 22/2020)
Cover Feature: Molecular Functionalization of NiO Nanocatalyst for Enhanced Water Oxidation by Electronic Structure Engineering (ChemSusChem 22/2020) Open
The Cover Feature shows an efficient NiO-C6F5 water oxidation catalyst, which was constructed by molecular functionalization at the nanoparticle surface. By rational electronic modulation, a comprehensive understanding on structure–activit…
View article: Molecular Functionalization of NiO Nanocatalyst for Enhanced Water Oxidation by Electronic Structure Engineering
Molecular Functionalization of NiO Nanocatalyst for Enhanced Water Oxidation by Electronic Structure Engineering Open
Tuning the local environment of nanomaterial‐based catalysts has emerged as an effective approach to optimize their oxygen evolution reaction (OER) performance, yet the controlled electronic modulation around surface active sites remains a…
View article: Selective Cross‐Metathesis of Highly Chelating Substrates in Aqueous Media
Selective Cross‐Metathesis of Highly Chelating Substrates in Aqueous Media Open
The role of non‐productive chelation in olefin metathesis has been investigated for a variety of highly functionalized substrates in aqueous environment. Using a morpholine‐substituted catalyst, the reactivity of oligoethylene glycols and …
View article: Switching O O bond formation mechanism between WNA and I2M pathways by modifying the Ru-bda backbone ligands of water-oxidation catalysts
Switching O O bond formation mechanism between WNA and I2M pathways by modifying the Ru-bda backbone ligands of water-oxidation catalysts Open
Understanding the seven coordination and OO coupling pathway of the distinguished Ru-bda catalysts is essential for the development of next generation efficient water-oxidation catalysts based on earth-abundant metals. This work reports th…
View article: Effects of molecular modifications for water splitting enhancement of BiVO4
Effects of molecular modifications for water splitting enhancement of BiVO4 Open
Combined organic (molecular adsorption) and inorganic (TiO2 passivation) modifications for enhancing water splitting efficiency of porous bismuth vanadate electrodes are tested. The catalytic activity of BiVO4 is increased after adsorption…
View article: Promoting the Fe(VI) active species generation by structural and electronic modulation of efficient iron oxide based water oxidation catalyst without Ni or Co
Promoting the Fe(VI) active species generation by structural and electronic modulation of efficient iron oxide based water oxidation catalyst without Ni or Co Open
Fe is considered as a promising alternative for OER catalysts owing to its high natural abundance and low cost. Due to the low conductivity and sluggish catalytic kinetics, the catalytic efficiency of Fe-rich catalysts is far from less abu…
View article: 2D MnOx composite catalysts inspired by natural OEC for efficient catalyticwater oxidation
2D MnOx composite catalysts inspired by natural OEC for efficient catalyticwater oxidation Open
Birnessite MnOx is a close inorganic model of natural oxygen-evolving complex (OEC) that hasbeen widely investigated for catalytic water oxidation, yet its activity is limited by the pooractive site exposure and sluggish charge transfer. H…
View article: Paired Electrocatalytic Oxygenation and Hydrogenation of Organic Substrates with Water as the Oxygen and Hydrogen Source
Paired Electrocatalytic Oxygenation and Hydrogenation of Organic Substrates with Water as the Oxygen and Hydrogen Source Open
The use of water as an oxygen and hydrogen source for the paired oxygenation and hydrogenation of organic substrates to produce valuable chemicals is of utmost importance as a means of establishing green chemical syntheses. Inspired by the…
View article: Resolving a Reactive Organometallic Intermediate from Dynamic Directing Group Systems by Selective C−H Activation
Resolving a Reactive Organometallic Intermediate from Dynamic Directing Group Systems by Selective C−H Activation Open
Catalyst discovery from systems of potential precursors is a challenging endeavor. Herein, a new strategy applying dynamic chemistry to the identification of catalyst precursors from C−H activation of imines is proposed and evaluated. Usin…
View article: CCDC 1420759: Experimental Crystal Structure Determination
CCDC 1420759: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Spatially well-defined carbohydrate nanoplatforms: synthesis, characterization and lectin interaction study
Spatially well-defined carbohydrate nanoplatforms: synthesis, characterization and lectin interaction study Open
Two novel dodecasubstituted carbohydrate nanoplatforms have been prepared for use in evaluating the importance of the spatial distribution of carbohydrates in their interaction with lectins.