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Now showing items 173-192 of 244

Q-CdSe sensitized TiO 2 inverse opals and disordered films for amplifying solar energy conversion by slow light effects

Bayram S.; El Makkaoui M.; Halaoui L. (, 2011)

Band edge effects slowing light in photonic crystals and internal scattering in disordered films can lead to amplification of light energy conversion. Inverse TiO 2 opals (i-TiO 2-o) with stop-band maxima at 560 and 700 ...
Quantum-confined CdTe films deposited by SILAR and their photoelectrochemical stability in the presence of Se2- as a hole scavenger

Haydous F.; Halaoui L. (American Chemical Society; WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2014)

Quantum-confined CdTe films were deposited by successive ionic layer adsorption and reaction (SILAR) on nc-TiO2 and on a conducting oxide electrode (FTO) from aqueous solutions of Cd2+ and Te2- prepared in situ under inert ...
Quinoxaline 1,4-dioxides induce G2-M cell cycle arrest and apoptosis in human colon cancer cells

Gali-Muhtasib H.U.; Diab-Assaf M.; Haddadin M.J. (NEW YORK233 SPRING ST, NEW YORK, NY 10013 USA, 2005)

We have recently shown that quinoxaline 1,4-dioxide (QdNO) derivatives, namely 2-benzoyl-3-phenyl-6,7-dichloroquinoxaline 1,4-dioxide (DCQ), 2-benzoyl-3-phenyl-quinoxaline 1,4-dioxide (BPQ) and 2-acetyl-3-methyl- quinoxaline ...
Quinoxalino[2,3- c ]cinnolines and their 5- N -oxide: Alkoxylation of methyl-substituted quinoxalino[2,3- c ]cinnolines to acetals and orthoesters

Haddadin M.J.; El-Khatib M.; Shoker T.A.; Beavers C.M.; Olmstead M.M.; Fettinger J.C.; Farber K.M.; Kurth M.J. (WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2011)

We report the alkoxylation of methyl-substituted quinoxalino[2,3-c] cinnolines to give acetals and orthoesters in high yields. Routes to the precursors of this alkoxylation reaction as well as other quinoxalino[2,3-c] ...
Rapid removal of flutriafol in water by zero-valent iron powder

Ghauch A. (OXFORDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2008)

A study of the effect of zero-valent iron (ZVI) powder is carried out for the first time on the degradation of flutriafol ((RS)-2,4′-difluoro-α-(1H-1,2,4-triazol-1-ylmethyl)-benzhydryl alcohol, C16H13F2N3O), a bifluorinated ...
Re-evaluation of recombination losses in dye-sensitized cells: The failure of dynamic relaxation methods to correctly predict diffusion length in nanoporous photoelectrodes

Barnes P.R.F.; Liu L.; Li X.; Anderson A.Y.; Kisserwan H.; Ghaddar T.H.; Durrant J.R.; O'Regan B.C. (WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2009)

Photocurrents generated by thick, strongly absorbing, dye-sensitized cells were reduced when the electrolyte Iodine concentration was increased. Electron diffusion lengths measured using common transient techniques (L n) ...
Reaction-diffusion based co-synthesis of stable α- and β-cobalt hydroxide in bio-organic gels

Al-Ghoul M.; El-Rassy H.; Coradin T.; Mokalled T. (AMSTERDAMPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2010)

We report the preparation, dynamics of formation and extensive characterization of a stable two-phase system of crystalline α- and β-Co(OH)2. The method is based on the reaction and diffusion of hydroxide ions into a ...
Reaction-diffusion framework: The mechanism of the polymorphic transition of α- To β-cobalt hydroxide

Rahbani J.; Ammar M.; Al-Ghoul M. (WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2013)

A new and simple method is proposed to explore the mechanism of the intercalation-deintercalation of a variety of anions throughout the formation of α-Co(OH)2 crystals and their polymorphic conversion to β-Co(OH)2. This ...
Reductive destruction and decontamination of aqueous solutions of chlorinated antimicrobial agent using bimetallic systems

Ghauch A.; Tuqan A. (AMSTERDAMPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2009)

Palladium, ruthenium and silver were investigated as catalysts for the dechlorination of dichlorophen (DCP, 2,2′-methylenebis(4-chlorophenol)), an antimicrobial and anthelmintic agent largely used as algicide, fungicide ...
Regioselectivity of a 1,3-dipolar cycloaddition to phenyl vinyl sulfoxide

Gray T.C.; Hasanayn F.; Richardson D.P.; Markgraf J.H. (MALDENCOMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA, 2009)

(Chemical Equation Presented) The regioselectivity of the 1,3-dipolar cycloaddition of benzonitrile N-oxide to phenyl vinyl sulfoxide is established by isotopic labeling and 13C NMR analysis, and by DFT calculations. © ...
Response to Dr. Frańska's comments on the paper antibiotic removal from water: Elimination of amoxicillin and ampicillin by microscale and nanoscale iron particles. Ghauch et al. (2009) Environmental Pollution 157, 1626-1635

Ghauch A. (OXFORDTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND, 2010)

[No abstract available]
Revoking excited state intra-molecular hydrogen transfer by size dependent tailor-made hierarchically ordered nanocapsules

Mouslmani M.; Patra D. (CAMBRIDGETHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND, 2014)

Curcumin associated poly(allylamine hydrochloride) cross-links with dipotassium phosphate and subsequently is assembled with ∼24 nm SiO 2 nanoparticles to form hierarchically ordered nanocapsule structures, which are ...
Rhythmic precipitate patterns and fractal structure

Sultan R.F. (HEIDELBERGTIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY, 2011)

Liesegang patterns of parallel precipitate bands are obtained when solutions containing co-precipitate ions interdiffuse in a 1D gel matrix. The sparingly soluble salt formed, displays a beautiful stratification of discs ...
Ring morphology and pH effects in 2D and ID Co(OH)2 liesegang systems

Badr L.; Sultan R. (WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2009)

We study the factors that affect the morphology of Co(OH)2 Liesegang rings, in a way to obtain concentric rings with large spacing, upon an appropriate variation in the experimental conditions. Such well-resolved patterns ...
Road versus roadside particle size distribution in a hot Mediterranean summer-Estimation of fleet emission factors

Baalbaki R.; Al-Assaad K.; Mehanna C.-J.; Saliba N.A.; Katurji M.; Roumie M. (PHILADELPHIA325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA, 2013)

Particle size distribution at major on-road, roadside, and university-ground sites in Lebanon were studied in summer 2011. In a predominant old traffic fleet, it is shown that calculated PM2.5 mass emission factors (EFs) ...
Rovibrational study and dipole moment calculation of the molecule YF with spin-orbit interaction

Korek M.; Abdul-Al S.N. (, 2009)

The electronic transition moments of lowest electronic states of YF molecule have been investigated by using the electronic wave functions obtained from a previous ab initio (CASSCF and MRCI) calculation for the lowest 20 ...
Scaling and crossover dynamics in the hyperbolic reaction-diffusion equations of initially separated components

Abi Mansour A.; Al Ghoul M. (COLLEGE PKONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA, 2011)

In this paper we investigate the dynamics of front propagation in the family of reactions (nA+mB→kC) with initially segregated reactants in one dimension using hyperbolic reaction-diffusion equations with the mean-field ...
Selective photodynamic therapy by targeted verteporfin delivery to experimental choroidal neovascularization mediated by a homing peptide to vascular endothelial growth factor receptor-2

Renno R.Z.; Terada Y.; Haddadin M.J.; Michaud N.A.; Gragoudas E.S.; Miller J.W. (CHICAGO515 N STATE ST, CHICAGO, IL 60610 USA, 2004)

Objective: To evaluate the feasibility, efficacy, and selectivity of photodynamic therapy (PDT) using targeted delivery of verteporfin to choroidal neovascularization (CNV) in the rat laser-injury model of CNV. Methods: ...
Sensing of H2O2 at low surface density assemblies of Pt nanoparticles in polyelectrolyte

Karam P.; Halaoui L.I. (WASHINGTON1155 16TH ST, NW, WASHINGTON, DC 20036 USA, 2008)

Amperometric detection of H2O2 was studied at random arrays of 2.5 nm polyacrylate-capped Pt nanoparticles (NP) assembled in poly(diallydimethylammonium chloride), PDDA, as a function of NP surface coverage. The arrays ...
Single molecule studies in chemical biology and nanosciences

Patra D. (, 2008)

Modern ultra-sensitive instrumental skill and expertise on surface modification of single biological molecules have sharpened the capabilities of scientists to address important current problems and explore new frontiers ...

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Browsing Department of Chemistry - Faculty Publications by Title

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