Chemistry (Scholarly Publications): Recent submissions
Now showing items 341-360 of 931
-
Spontaneous grafting of nitrophenyl groups on amorphous carbon thin films: A structure-reactivity investigation
(2012)Amorphous carbon materials find numerous applications in diverse areas ranging from implantable biodevices to electronics and catalysis. The spontaneous grafting of aryldiazonium salts is an important strategy for the ... -
Influence of carbon nanostructure and oxygen moieties on dopamine adsorption and charge transfer kinetics at glassy carbon surfaces
(2019)Abnormal levels of the neurotransmitter dopamine have been linked to a variety of neurochemical disorders including depression and Parkinson's disease. Dopamine concentrations are often quantified electrochemically using ... -
Homolytic products from heterolytic paths in H2 dissociation on metal oxides: The example of CeO2
(2014)Mechanisms for H2 dissociation on metal oxides have been typically inferred from the infrared spectra of reaction products on the basis of the presence or lack of M–H fingerprints. Here, we demonstrate by means of ... -
Rhodium complexes promoting C O bond formation in reactions with oxygen: The role of superoxo species
(2017)C−O bond formation in reactions of olefins with oxygen is a long-standing challenge in chemistry for which the very complicated −sometimes controversial− mechanistic panorama slows down the design of catalysts for oxygenations. ... -
Computationally probing the performance of hybrid, heterogeneous and homogeneous Ir-based catalysts for water oxidation
(2016)An attractive strategy to improve the performance of water oxidation catalysts would be to anchor a homogeneous molecular catalyst on a heterogeneous solid surface to create a hybrid catalyst. The idea of this combined ... -
Understanding and tuning the intrinsic hydrophobicity of rare-earth oxides: A DFT+U study
(2016)Rare-Earth Oxides (REOs) possess a remarkable intrinsic hydrophobicity, making them candidates for a myriad of applications. Although the superhydrophobicity of REOs has been explored experimentally, the atomistic details ... -
Copper silver thin films with metastable miscibility for oxygen reduction electrocatalysis in alkaline electrolytes
(2018)Increasing the activity of Ag-based catalysts for the oxygen reduction reaction (ORR) is important for improving the performance and economic outlook of alkaline-based fuel cell and metal–air battery technologies. In this ... -
Homogeneously dispersed multimetal oxygen-evolving catalysts
(2016)Earth-abundant first-row (3d) transition-metal-based catalysts have been developed for the oxygen-evolution reaction (OER); however, they operate at overpotentials significantly above thermodynamic requirements. Density ... -
Dramatic mechanistic switch in Sn/AuI group exchanges: Transmetalation vs. oxidative addition
(2016)The mechanism of Ph/X exchange in reactions involving SnPh(n)Bu3 and [AuXL] complexes switches dramatically from the usual concerted mechanism involving Ar/X mixed bridges when X = Cl, to an unexpected oxidative ... -
Gold-supported cerium-doped NiOx catalysts for water oxidation
(2016)The development of high-performance catalysts for the oxygen evolution reaction (OER) is paramount for cost-effective conversion of renewable electricity to fuels and chemicals. Here we report the significant enhancement ... -
Equilibrium oxygen redox capacity of ultrathin CeO2-x depends non-monotonically on large biaxial strain
(2017)Elastic strain is being increasingly employed to enhance the catalytic properties of mixed ion–electron conducting oxides. However, its effect on oxygen storage capacity is not well established. Here, we fabricate ... -
Edge reactivity and water-assisted dissociation on cobalt oxide nanoislands
(2017)Transition metal oxides show great promise as Earth-abundant catalysts for the oxygen evolution reaction in electrochemical water splitting. However, progress in the development of highly active oxide nanostructures is ... -
Hidden aryl-exchange processes in stable 16e RhIII [RhCp*Ar2] complexes, and their unexpected transmetalation mechanism
(2018)Experiments mixing the stable 16e 5-coordinate complexes [RhCp∗Ar2] (Cp∗ = C5Me5; Ar = C6F5, C6F3Cl2-3,5) uncover fast aryl transmetalations. Unexpectedly, as supported computationally, these exchanges are not spontaneous, ... -
RhIAr/AuIAr Transmetalation, a case of group exchange pivoting on formation of M-M bonds via oxidative insertion
(2019)By combining kinetic experiments, theoretical calculations, and microkinetic modeling, we show that Pf/Rf (C6F5/C6Cl2F3) exchange between [AuPf(AsPh3)] and trans‐[RhRf(CO)(AsPh3)2] does not occur by typical concerted Pf/Rf ... -
Mimicking class I b Mn2-ribonucleotide reductase: A MnII2 complex and its reaction with superoxide
(2018)A fascinating discovery in the chemistry of ribonucleotide reductases (RNRs) has been the identification of a dimanganese (Mn2 ) active site in class I b RNRs that requires superoxide anion (O2.- ), rather than dioxygen ... -
Terahertz spectroscopy of amorphous WSe2 and MoSe2 thin films
(2018)Time domain spectroscopy is used to determine the THz electromagnetic response of amorphous transition metal dichalcogenides WSe2and MoSe2 in thin-film form. The dielectric function is obtained using a rigorous ... -
Grain boundary-mediated nanopores in molybdenum disulfide grown by chemical vapor deposition
(Royal Society of Chemistry, 2017)Molybdenum disulfide (MoS2) is a particularly interesting member of the family of two-dimensional (2D) materials due to its semiconducting and tunable electronic properties. Currently, the most reliable method for obtaining ... -
Correction: Glycosylated naphthalimides and naphthalimide Tröger’s bases as fluorescent aggregation probes for Con A
(Royal Society of Chemistry, 2019) -
Electrochromic nickel oxide films for smart window applications
(2016)In this study, nickel oxide films were prepared through an electrodeposition technique. NiO films were fabricated on Indium Tin Oxide (ITO) supports by cycling the potential between two different sets of limits. The ... -
Electroanalytical Sensing Properties of Pristine and Functionalized Multilayer Graphene
(2014)This paper describes the heterogeneous electron transfer (ET) properties of high-quality multilayer graphene (MLG) films grown using chemical vapor deposition (CVD) on nickel and transferred to insulating poly(ethylene ...
