Department of Chemistry
Recent Submissions
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Weighted-Residual Methods for the Solution of Two-Particle Lippmann-Schwinger Equation without Partial-Wave Decomposition
(Springer Verlag, 2014-01)Recently there has been a growing interest in computational methods for quantum scattering equations that avoid the traditional decomposition of wave functions and scattering amplitudes into partial waves. The aim of the ... -
White emitting polyfluorene functionalized with azide hybridized on near-UV light emitting diode for high color rendering index
(Optical Society of America, 2008)We develop and demonstrate high-quality white light generation that relies on the use of a single-type simple conjugated polymer of polyfluorene functionalized with azide groups (PFA) integrated on a near-UV LED platform. ... -
Non-radiative resonance energy transfer in bi-polymer nanoparticles of fluorescent conjugated polymers
(Optical Society of America, 2010-01-18)his work demonstrates the comparative studies of non-radiative resonance energy transfer in bi-polymer nanoparticles based on fluorescent conjugated polymers. For this purpose, poly[(9,9-dihexylfluorene) (PF) as a donor ... -
Morphology-Dependent Energy Transfer of Polyflorene Nanoparticeles Decorating InGaN/GaN Quantum-Well Nanopillars
(American Chemical Society, 2013)Conjugated polymer nanoparticles (CPNs), prepared in aqueous dispersion from poly[(9,9-bis{3-bromopropyl}fluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1,3}-thiodia- zole)] (PFBT-Br), are incorporated into a nanopillar architecture ... -
Study of exciton transfer in dense quantum dot nanocomposites
(Royal Society of Chemistry, 2014)Nanocomposites of colloidal quantum dots (QDs) integrated into conjugated polymers (CPs) are key to hybrid optoelectronics, where engineering the excitonic interactions at the nanoscale is crucial. For such excitonic ... -
Electrochemically generated catalyst system with increased specificity and efficiency for olefin metathesis
(Elsevier, 2003-11-01)A facile route for the electrochemical generation of an olefin metathesis catalyst from methylene chloride solution Of WCl6 was described. It was found that reductive, oxidative and pulse electrolysis produced the same ... -
Quantum efficiency enhancement in film by making nanoparticles of polyfluorene
(Optical Society of America, 2008)We report on conjugated polymer nanoparticles of polyfluorene that were formed to exhibit higher fluorescence quantum efficiency in film (68%) and reduce undesired emission peak wavelength shifts in film (by 20 nm), compared ... -
White-emitting Conjugated Polymer Nanoparticles with Cross-Linked Shell for Mechanical Stability and Controllable Photometric Properties in Color-Conversion LED Applications
(American Chemical Society, 2011-03-28)We report on the synthesis and characterization of water-dispersible, mechanically stable conjugated polymer nanoparticles (CPNs) in shelled architecture with tunable emission and controllable photometric properties via ... -
A photoelectron spectroscopic investigation of conducting polypyrolle-polyamide composite film
(Elsevier, 1995-04)X-ray photoelectron spectrum of the electrochemically prepared polypyrrole and polypyrrole-polyamide composite films exhibit an additional strong high binding energy peak at 402.0 eV corresponding to N+ moieties. Intensity ... -
Au nanoparticles on PMMA Matrix: in-situ Synthesis and the Effect of Au nanoparticles on PMMA Conductivity
(Elsevier, 2010-09-01)Thin PMMA films with and without gold nanoparticles were subjected to +/-10V d.c. and a.c. (square wave) excitations in various frequencies while recording their XPS spectra, and the resulting differences due to charging ... -
In situ FT-IR investigation of the reduction of NO with CO over Au/CeO2-Al2O3 catalyst in the presence and absence of H-2
(Elsevier, 2009-04-29)he NO + CO + H-2 reaction over CeO2, Au/CeO2 (3 wt% Au), Au/CeO2-Al2O3 (2.9 wt% Au, 20 wt% Al2O3) and CeO2-Al2O3 mixed support prepared by co-precipitation has been Studied by FT-IR spectroscopy at elevated temperatures. ... -
NO reduction by CO over gold catalysts based on ceria supports prepared by mechanochemical activation modified by Me3+ (Me=Al or lanthanides): Effect of water in the feed gas
(Elsevier, 2009-07-25)The reduction of NO by CO was studied over gold catalysts supported on ceria modified by Me3+ ions (Me = Al, La, Sm, Gd and Yb). The ceria supports were prepared by mechanochemical activation. The samples were characterized ... -
The effect of cationic surfactant and some organic/inorganic additives on the morphology of mesostructured silica templated by pluronics
(Elsevier, 2008-11-01)Tri-block copolymers (poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide), represented as EOxPOyEOx), pluronics (F127=EO106PO70EO106, P65=EO20PO30EO20, P85=EO27PO39EO27, P103= EO17PO55EO17, and P123 = EO20PO70EO20) ... -
Heating of magnetic fluid systems driven by circularly polarized magnetic field
(Elsevier, 2010-01)A theory is presented to calculate the heat dissipation of a magnetic suspension, a ferrofluid, driven by7 circularly polarized magnetic field. Theory is tested by in vitro experiments and it is shown that, regardless of ... -
Synthesis, characterization and antibacterial investigation of silver-copper nanoalloys
(Publishing, 2011)Ag-Cu nanoalloys were synthesized by chemical co-reduction of their metal salts in aqueous solution with hydrazine hydrate, in the presence of complexing agent and stabilizer, preventing the oxidation of copper, as revealed ... -
Complexing agent effect on the stoichiometric ratio of the electrochemically prepared CuInSe2 thin films
(Elsevier, 2007-12-14)The electrodeposition of CuInSe2 is investigated to improve the stoichiometric properties of CuInSe2 layers on indium tin oxide (ITO)-coated glass substrates and to develop one-step electrodeposition method for solar cell ... -
Carbon supported nano-sized Pt-Pd and Pt-Co electrocatalysts for proton exchange membrane fuel cells
(Elsevier, 2009-12)Nano-sized Pt-Pd/C and Pt-Co/C electrocatalysts have been synthesized and characterized by an alcohol-reduction process using ethylene glycol as the solvent and Vulcan XC-72R as the supporting material. While the Pt-Pd/C ... -
Combined XPS and contact angle studies of ethylene vinyl acetate and polyvinyl acetate blends
(Elsevier, 2011-09-01)In this study, we prepared thin films by blending ethylene vinyl acetate copolymers (EVA) containing 12-33 (wt.%) vinyl acetate (VA) with polyvinyl acetate (PVAc) and high density polyethylene homopolymers. Large area ... -
Gold catalysts supported on ceria doped by rare earth metals for water gas shift reaction: Influence of the preparation method
(Elsevier, 2009-04-15)Gold catalysts based on ceria, doped by various RE metals (La, Sm, Gd, Yb, Y) were studied. The influence of the preparation methods on structure, properties and catalytic activity in the WGS reaction was investigated. The ... -
NOx reduction on a transition metal-free gamma-Al2O3 catalyst using dimethylether (DME)
(Elsevier, 2008-07-15)NO2 and dimethylether (DME) adsorption as well as DME and NO2 co-adsorption on a transition metal-free gamma-alumina catalyst were investigated via in-situ transmission Fourier transform infrared spectroscopy (in-situ ...
