Search Results - "Ghaddar, Tarek"

Metal–Organic Framework Photocatalyst Incorporating Bis(4′-(4-carboxyphenyl)-terpyridine)ruthenium(II) for Visible-Light-Driven Carbon Dioxide Reduction by Elcheikh Mahmoud, Mahmoud, Audi, Hassib, Assoud, Abdeljalil, Ghaddar, Tarek H, Hmadeh, Mohamad

“…In this study, we report the successful incorporation of the photoactive bis­(4′-(4-carboxy­phenyl)-terpyridine)­ruthenium­(II) (Ru­(cptpy)2) strut into a…”
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Therapeutic potential of flavonoids in cancer: ROS-mediated mechanisms by Slika, Hasan, Mansour, Hadi, Wehbe, Nadine, Nasser, Suzanne A., Iratni, Rabah, Nasrallah, Gheyath, Shaito, Abdullah, Ghaddar, Tarek, Kobeissy, Firas, Eid, Ali H.

“…Cancer is a leading cause of morbidity and mortality around the globe. Reactive oxygen species (ROS) play contradicting roles in cancer incidence and…”
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Eco-Friendly Aqueous Dye-Sensitized Solar Cell with a Copper(I/II) Electrolyte System: Efficient Performance under Ambient Light Conditions by Jilakian, Meghry, Ghaddar, Tarek H

“…Organic solvents used in electrolytes of dye-sensitized solar cells (DSCs) are generally toxic and not environmentally safe, which renders their use,…”
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Water-Based Electrolytes for Dye-Sensitized Solar Cells by Law, ChunHung, Pathirana, Shehan C., Li, Xaioe, Anderson, Assaf Y., Barnes, Piers R. F., Listorti, Andrea, Ghaddar, Tarek H., O′Regan, Brian C.

“…Stable and efficient dye‐sensitized solar cells based on water‐containing electrolytes are shown. For water contents up to 40%, no decrease in efficiency is…”
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Structure/Function Relationships in Dyes for Solar Energy Conversion: A Two-Atom Change in Dye Structure and the Mechanism for Its Effect on Cell Voltage by O’Regan, Brian C, Walley, Kate, Juozapavicius, Mindaugas, Anderson, Assaf, Matar, Farah, Ghaddar, Tarek, Zakeeruddin, Shaik M, Klein, Cédric, Durrant, James R

“…Recombination between injected electrons and iodine limits the photovoltage in dye-sensitized solar cells (DSSCs). We have recently suggested that many new dye…”
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New pyridyl-based dyes for co-sensitization in dye sensitized solar cells by El Bitar Nehme, Vanessa A., El Bitar Nehme, Melissa A., Ghaddar, Tarek H.

“…•The synthesis of six new pyridyl-based dyes is described.•The experimental and theoretical TD-DFT optical properties are presented.•The photovoltaic…”
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Universal Low-Temperature MWCNT-COOH-Based Counter Electrode and a New Thiolate/Disulfide Electrolyte System for Dye-Sensitized Solar Cells by Hilmi, Abdulla, Shoker, Tharallah A, Ghaddar, Tarek H

“…A new thiolate/disulfide organic-based electrolyte system composed of the tetrabutylammonium salt of 2-methyl-5-trifluoromethyl-2H-[1,2,4]­triazole-3-thiol…”
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The Effect of Different Ester Chain Modifications of Two Guaianolides for Inhibition of Colorectal Cancer Cell Growth by Al Aaraj, Lamis, Hayar, Berthe, Jaber, Zaynab, Saad, Walid, Saliba, Najat A, Darwiche, Nadine, Ghaddar, Tarek

“…Several sesquiterpene lactones (STLs) have been tested as lead drugs in cancer clinical trials. Salograviolide- (Sal- and salograviolide- (Sal- are two STLs…”
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Application of synchronous fluorescence scan spectroscopy for size dependent simultaneous analysis of CdTe nanocrystals and their mixtures by Patra, Digambara, Ghaddar, Tarek H.

“…In this paper, synchronous fluorescence scan (SFS) spectroscopy has been applied for the first time for the simultaneous determination of a mixture of CdTe…”
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Re-evaluation of Recombination Losses in Dye-Sensitized Cells: The Failure of Dynamic Relaxation Methods to Correctly Predict Diffusion Length in Nanoporous Photoelectrodes by Barnes, Piers R. F, Liu, Lingxuan, Li, Xiaoe, Anderson, Assaf Y, Kisserwan, Hawraa, Ghaddar, Tarek H, Durrant, James R, O’Regan, Brian C

“…Photocurrents generated by thick, strongly absorbing, dye-sensitized cells were reduced when the electrolyte iodine concentration was increased. Electron…”
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Time resolved study of three ruthenium(II) complexes at micellar surfaces: A new long excited state lifetime probe for determining critical micelle concentration of surfactant nano-aggregates by Patra, Digambara, Chaaban, Ahmad H., Darwish, Shaza, Saad, Huda A., Nehme, Ali S., Ghaddar, Tarek H.

“…[Display omitted] •Synthesis and excited state lifetime of three different ruthenium complexes are studied.•At micelle surfaces, the surfactant head charge and…”
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Large Enhancement of Dye Sensitized Solar Cell Efficiency by Co-sensitizing Pyridyl- and Carboxylic Acid-Based Dyes by Hilal, Hamsa M, El Bitar Nehme, Melissa A, Ghaddar, Tarek H

“…Co-sensitization is an attractive approach to enhance the light-harvesting efficiency of a dye sensitized solar cell (DSSC), whereby two or more dyes having…”
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7- O -methylpunctatin, a Novel Homoisoflavonoid, Inhibits Phenotypic Switch of Human Arteriolar Smooth Muscle Cells by Fardoun, Manal, Iratni, Rabah, Dehaini, Hassan, Eid, Assaad, Ghaddar, Tarek, El-Elimat, Tamam, Alali, Feras, Badran, Adnan, Eid, Ali H, Baydoun, Elias

“…Remodeling of arterioles is a pivotal event in the manifestation of many inflammation-based cardio-vasculopathologies, such as hypertension. During these…”
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Pulse-Front Propagation and Interaction During the Growth of CdS Nanoparticles in a Gel by Al-Ghoul, Mazen, Ghaddar, Tarek, Moukalled, Tharwat

“…We studied the spatiotemporal dynamics of a new system consisting of sulfide ions (outer electrolyte) diffusing into an organic gel (gelatin) containing…”
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Synthesis and Photophysical Properties of Ruthenium-Based Dendrimers and Their Use in Dye Sensitized Solar Cells by Younes, Ali H, Ghaddar, Tarek H

“…First- and second-generation dendrimers (Ru3 and Ru6) have been synthesized, and their photophysical properties were investigated in solution and when adsorbed…”
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Differential growth inhibitory effects of highly oxygenated guaianolides isolated from the Middle Eastern indigenous plant Achillea falcata in HCT-116 colorectal cancer cells by Tohme, Rita, Al Aaraj, Lamis, Ghaddar, Tarek, Gali-Muhtasib, Hala, Saliba, Najat A, Darwiche, Nadine

“…Medicinal plants play a crucial role in traditional medicine and in the maintenance of human health worldwide. Sesquiterpene lactones represent an interesting…”
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Photocurrent Generation in Layer-By-Layer Assembled Dendrimers with Ruthenium Tris-bipyridine Peripheral Groups and a Viologen-like Core by Saab, Manal Abi, Abdel-Malak, Rouba, Wishart, James F, Ghaddar, Tarek H

“…The photophysical and photoelectrochemical properties of first- and second-generation dendrimers with ruthenium tris-bipyridine peripheral groups and a…”
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Anti-Inflammatory and Cytostatic Activities of a Parthenolide-Like Sesquiterpene Lactone from Cota palaestina subsp. syriaca by Saliba, Najat A., Ghaddar, Tarek H., Al Aaraj, Lamis, Nahhas, Rana, Ajeeb, Bushra, Fares, Mohamed-Bilal, Nasr, Bilal, Talhouk, Rabih, Talhouk, Salma N.

“…A sesquiterpene lactone 1-β,10-Epoxy-6-hydroxy-1,10H-inunolide (K100) was isolated through “bioassay-guided fractionation” from Cota palaestina subsp. syriaca,…”
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Electrostatic Layer-by-Layer Deposition of Photoactive Dendrimers with Triviologen-Like Cores on Their Surfaces. Synthesis and Electrochemical and Photocurrent Generation Measurements by Boubbou, Kheireddine H, Ghaddar, Tarek H

“…The stepwise assembly of Fréchet-type dendrimers with naphthalene peripheral groups and positively charged viologen-like cores on quartz and ITO surfaces…”
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A Dendrimer-Based Electron Antenna:  Paired Electron-Transfer Reactions in Dendrimers with a 4,4‘-Bipyridine Core and Naphthalene Peripheral Groups by Ghaddar, Tarek H, Wishart, James F, Thompson, David W, Whitesell, James K, Fox, Marye Anne

“…Paired electron transfers (ET) induced by the absorption of two photons by synthetic dendrimers are observed in first-, second-, and third-generation…”
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