Synthesis and Characterization of a Luminol Based Chemiluminescent Trimeric System.

A luminol based chemiluminescent trimeric system, namely 2,3-dihydro-5,8-di(thiophen-2-yl)phthalazine-1,4-dione (TB-Lum), bearing thiophene rings as donor units and 2,3-dihydrophthalazine-1,4-dione as an acceptor unit was synthesized in two steps via donor-acceptor-donor approach using two different methods. It was found that TB-Lum emits chemiluminescent light when exposed to HO in a basic medium, and the presence of substituents and the type of aromatic ring bearing chemiluminescent active group have a direct effect on the compound's sensitivity. Among the members of a large family of metal ions, fluorescent and chemiluminescent TB-Lum exhibited high sensitivity to Cu and Fe ions.

Binder- free iridium based electrocatalysts: Facile preparation, high activity and outstanding stability for hydrogen evolution reaction in acidic medium.

Herein, we develop various iridium based catalysts using titania, zirconia and ceria as a supporting material (Ir/MO; M = Ce, Ti, Zr) for hydrogen evolution reaction (HER). To investigate their electrocatalytic activities, glassy carbon electrodes (GCE) were modified by drop casting the catalyst ink without using any binder. Linear sweep voltammetry (LSV) was used to test their electrocatalytic activities in 0.

Ceria supported ruthenium(0) nanoparticles: Highly efficient catalysts in oxygen evolution reaction.

Ruthenium(0) nanoparticles were successfully prepared on the surface of ceria (Ru/CeO) and used as catalysts on glassy carbon electrode (GCE) in oxygen evolution reaction (OER) from water electrolysis at room temperature. Ru/CeO on GCE exhibits high catalytic activity for OER in alkaline solution. It provides a low onset potential of 1.

Titania, zirconia and hafnia supported ruthenium(0) nanoparticles: Highly active hydrogen evolution catalysts.

Designing a cost-effective catalyst with high activity and stability for hydrogen evolution reaction (2H + 2e → H) is a big challenge due to increasing demand for energy. Herein, we report the electrocatalytic activity of glassy carbon electrodes with group 4 metal oxides (TiO, ZrO, HfO) supported ruthenium(0) nanoparticles in hydrogen evolution reaction. Electrochemical activity of modified electrodes is investigated by recording linear sweep voltammograms in 0.

Nanoceria-Supported Ruthenium(0) Nanoparticles: Highly Active and Stable Catalysts for Hydrogen Evolution from Water.

Ruthenium(0) nanoparticles supported on nanoceria (Ru/CeO) were prepared by reduction of Ru ions on the surface of ceria using aqueous solution of NaBH. The Ru/CeO samples were characterized by advanced analytical tools and employed as electrocatalysts on the glassy carbon electrode (GCE) in hydrogen evolution from water. The GCE, modified by Ru/CeO (1.

A glow in the dark: synthesis and electropolymerization of a novel chemiluminescent terthienyl system.

The synthesis and characterization of a unique (electro)chemiluminescent monomer based on a terthienyl system, and its corresponding polymer which is the first example of an electro-active chemiluminescent polymer bearing a pyridazine appendage, are described.