A5102858927- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Metal complexes synthesis and properties
- Electrocatalysts for Energy Conversion
- Magnetism in coordination complexes
- CO2 Reduction Techniques and Catalysts
- Crystallography and molecular interactions
- Lanthanide and Transition Metal Complexes
- Advanced Photocatalysis Techniques
- Supramolecular Chemistry and Complexes
- Molecular Sensors and Ion Detection
- Metal-Organic Frameworks: Synthesis and Applications
- Carbon dioxide utilization in catalysis
- Catalytic Processes in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- Luminescence and Fluorescent Materials
- Advanced battery technologies research
- Crystal structures of chemical compounds
- Sulfur-Based Synthesis Techniques
- Electrochemical Analysis and Applications
- Synthesis and Characterization of Heterocyclic Compounds
- Metalloenzymes and iron-sulfur proteins
- Porphyrin and Phthalocyanine Chemistry
- Computational Drug Discovery Methods
- DNA and Nucleic Acid Chemistry
Université de Montréal
2015-2024
Bombardier (Canada)
2021
Département de Chimie Moléculaire
2015-2016
Canadian Patient Safety Institute
2014
Saskatchewan Health Quality Council
2014
Simon Fraser University
2006
Hôtel-Dieu de Montréal
1993
Hotel Dieu Hospital
1993
The allure of metal–organic frameworks (MOFs) in heterogeneous electrocatalysis is that catalytically active sites may be designed <italic>a priori</italic> with an unparalleled degree control.
Lanthanide-based luminescent materials have unique properties and are well-studied for many potential applications. In particular, the characteristic 5d → 4f emission of divalent lanthanide ions such as EuII allows tunability emissive via modulation coordination environment. We report synthesis photoluminescence investigation pentamethylcyclopentadienyleuropium(II) tetrahydroborate bis(tetrahydrofuran) dimer (1), first example an organometallic, discrete molecular band-shift luminescence...
The synthesis, structural, and photophysical properties of a novel family neutral fac-[Re(N∧N)(CO)3(L)] complexes, where N∧N is either 2,2′-bipyridine or 1,10-phenanthroline L para functionalized 5-aryltetrazolate [namely, 5-phenyltetrazolate (Tph−), 4-(tetrazolate-5-yl)benzaldehyde (Tbdz−), 5-(4-acetylphenyl)tetrazolate (Tacy−), methyl 4-(tetrazolate-5-yl)benzoate (Tmeb−)] are reported. complexes were prepared by direct addition the corresponding tetrazolate anion to acetonitrile solvated...
A wide array of systems, ranging from enzymes to synthetic catalysts, exert adaptive motifs maximize their functionality. In a related manner, select metal-organic frameworks (MOFs) and similar systems exhibit structural modulations under stimuli such as the infiltration guest species. Probing responsive behavior in situ is challenging but important step toward understanding function subsequently building functional systems. this report, we investigate dynamic an electrocatalytic...
The ruthenium tris-quaterpyridine complex, obtained in quantitative yield, is an excellent photosensitiser for photocatalytic hydrogen production, especially under red-light irradiation.
Concentration-dependent equilibria of molecular squares [Pd4(L′)4(L)4](NO3)8 and triangles [Pd3(L′)3(L)3](NO3)6 were obtained when cis-protected Pd(II) units [PdL′(NO3)2] (L′ = tmeda, 2,2′-bpy, phen) combined independently with 4,4′-bipyridine (L) in water. However, complexation [PdL′(OTs)2] L resulted exclusive formation the corresponding squares. The addition AgOTs to each mixture square triangle led a shift equilibrium, resulting disappearance crystal structures [Pd4(L′)4(L)4](OTs)8...
Copper-based hydrogen evolution electrocatalysts are promising materials to scale-up production due their reported high current densities; however, electrode durability remains a challenge. Here, we report facile, cost-effective, and scalable synthetic route produce Cu2-xS electrocatalysts, exhibiting rates that increase for ∼1 month of operation. Our electrodes reach state-of-the-art performance ∼400 mA cm-2 at -1 V vs RHE under mild conditions (pH 8.6), with almost 100% Faradaic efficiency...
The mononuclear compounds bis-(2,2′-bipyridine)ruthenium(II)-(tris(2-pyridyl)triazine) [(bpy)2Ru(tpt)](PF6)21 and bis-(4,4′-di-tert-butyl-2,2′-bipyridine)ruthenium(II)-(tris(2-pyridyl)triazine) [(tbbpy)2Ru(tpt)](PF6)22 have been synthesised fully characterised. attempted syntheses of heterodinuclear complexes with the tris(2-pyridyl)triazine (tpt) ligand as bridging various palladium(II)- platinum(II)-dichloro using ruthenium starting materials resulted in a partial hydrolysis triazine based...
Abstract The palladium‐catalysed cross‐coupling reaction between 3,8‐dibromo‐1,10‐phenanthroline with phenylacetylene or 3,5‐bis(trifluoromethyl)phenylboronic acid gives good yields of the 3,8‐disubstituted products. These 1,10‐phenanthroline derivatives are used for formation novel ruthenium complexes type [(tbbpy) 2 Ru(phenR )] 2+ [where tbbpy = 4,4′‐di‐ tert ‐butyl‐2,2′‐bipyridine, phen 1,10‐phenanthroline, R represents substituents at 3,8 positions bromine,...
Discrete molecular organometallic europium(II) complexes are promising functional materials due to their ability behave as highly sensitive band-shift luminescence thermometers. Furthering our understanding of the design principles salient emission behavior such systems is important for developing them in this emerging application. To end, a series pseudo-
Mixed-metal oxides are generally considered to be the highest-performance catalysts for alkaline water oxidation. Despite significant efforts dedicated understanding and accelerating their efficiency, most works have been limited investigations of Ni, Co, Fe oxides, thus overlooking beneficial effects hetero-anion incorporation. To this end, we report on development a Co0.5Fe0.5O0.5F1.5 oxyfluoride catalyst with highly effective catalytic sites electrochemical In particular, its performance...
A photosensitizer based on a ruthenium complex of bisamide-polypyridyl ligand gives rise to large improvement in photocatalytic stability, rate activity, and efficiency H2 production compared [Ru(bpy)3 ]2+ (bpy=2,2'-bpyridine). The bisamide polypyridyl combined with cobaltoxime-based photocatalyst was found be highly efficient under blue-light (turnover number (TON)=7800) green-light irradiation (TON=7200) whereas significantly less effective TON 2600 1100, respectively. greatest...
6-Azidotetrazolo[5,1-a]phthalazine (ATPH) is a nitrogen-rich compound of surprisingly broad interest. It purported to be natural product, yet it closely related substances developed as explosives and highly polymorphic despite having nearly planar structure with little flexibility. Seven solid forms ATPH have been characterized by single-crystal X-ray diffraction. The structures show diverse patterns molecular organization, including both stacked sheets herringbone packing. In all cases,...
The synthesis and characterization of a novel family positively charged fac-[Re(bpy)(CO)3(L)]PF6 (bpy = 2,2′-bipyridine) complexes are reported, where L is pyridine functionalized in para or meta position with fulvene moiety, namely, 4-fluoren-9-ylidenemethyl-pyridine (pFpy) 3-fluoren-9-ylidenemethyl-pyridine (mFpy). were prepared high yield (86%) by direct addition at room temperature the corresponding to tetrahydrofuran (THF) adduct fac-[Re(bpy)(CO)3(THF)][PF6] precursor. Both ligand...
Ion-gated transistors employ ionic gating media (e.g. liquids, polymer electrolytes, aqueous saline solutions) to modulate the density of charge carriers in transistor channel. Not only they operate at low voltages (ca 0.5–1 V) but can also feature printability, flexibility and easy integration with chemo- bio-sensing platforms. Metal oxides are channel materials interesting for their processability air, temperature. Among metal oxides, tungsten oxide (band gap ca 2.5–2.7 eV) stands out its...
Pitolisant hydrochloride is used to treat excessive daytime sleepiness in adults with narcolepsy. The drug formulated as a crystalline solid, and monoclinic P21 form has been claimed patents, but little additional information about the structure polymorphism of compound published. No new forms were obtained when we grew crystals from solution under various conditions. Re-examination revealed disordered partially hydrated that resembles one reported earlier not identical. Further insight was...
Chiral 1D tin iodides EBASnI
Four rhenium(I) chromophores attached to a dirhodium(n) core form new hexametallic light-harvesting assembly as characterised by X-ray crystallography, UV-vis spectroscopy and electrochemistry.