A new method for uric acid (UA) determination based on the quenching of the cathodic ECL of the tris(2,2-bipyridine)ruthenium(II)–uricase system is described. The biosensor is based on a double-layer design containing first tris(2,2-bipyridine)ruthenium(II) (Ru(bpy)32+) electrochemically immobi...

A novel tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)32+) cathodic electrochemiluminescence (ECL) was generated at −0.78 V at the Pt electrode in acetonitrile (ACN), which suggested that the cathodic ECL differed from conventional cathodic ECL. It was found that tripropylamine (TPrA) could enhanc...

The adsorptive properties of tris(2,2′-bipyridine)ruthenium(II)-clay intercalation compounds, which were synthesized through cation exchange reactions from synthetic saponite (Sumecton SA), synthetic fluoro-tetrasilicic mica and montmorillonite (Kunipia F) for phenols were investigated. The ads...

Here we report the gas-phase action spectrum of tris(2,2′-bypyridine)ruthenium(II) dications, Ru(bipy)32+, recorded over a broad wavelength region from 210 nm to 650 nm. Ions formed by electrospray ionization were thermalized in collisions with helium buffer gas at room temperature in a 22-pole...

Quantitative electrochemiluminescence (ECL) detection of a model protein, bovine serum albumin (BSA) was achieved via biotin–avidin interaction using an avidin-based sensor and a well-developed ECL system of tris(2,2′-bipyridine) ruthenium(II) derivative as label and tri-n-propylamine (TPA) as...

Xerogels based on resorcinol-formaldehyde (XRF) doped with different doses of Tris(2,2′-bipyridine) ruthenium(II) (RuBpy) were synthesized and characterized, and their photoactivity was determined in the presence of solar radiation. The addition of RuBpy did not modify the morphological and tex...

The first compound of zinc(II) containing pyridoxalaminoguanidine has been synthesized and characterized by elemental analysis, infrared spectra, conductometric measurements and X-ray crystallography. Single crystals of the compound were obtained in the reaction of methanolic solution of zinc(II...

The synthesis of 2,3-dideoxy-3-C-(hydroxymethyl)-3-C-methyl-d-glycero-tetrofuranosyl nucleosides was accomplished in high enatiomeric purity (98.5% ee) via [3,3]-sigmatropic Claisen rearrangement of (E)(S)-5-benzyloxy-1-tert-butyldimethylsilanyloxy-4-methyl-pent-3-en-2-ol prepared from 2,3-O-iso...

9-Methyl-9-azabicyclo[4.2.I]nonan-1-ol (homotropan-1-ol; homophysoperuvine) and -non-7-en-1-ol (homotrop-7-en-1-ol) have been synthesised together with the nor- systems and N-benzyl derivatives. The bicyclic amino-alcohols are shown to be in tautomeric equilibrium with the corresponding 4-aminoc...

The reaction of 4,7-dibromo-2,1,3-benzothiadiazole with arylboronic acids (phenyl, 1-naphthyl, 4-methoxyphenyl, 4-chlorophenyl and 4-trifluoromethylphenyl) in the presence of catalytic amounts of a NCP-pincer palladacycle affords photoluminescent π-extended 4,7-diaryl-2,1,3-benzothiadiazoles 4a...

The optimized geometry and vibrational frequencies of an organic compound copper phthalocyanine tetrasulfonic acid tetra sodium salt (CuPcTS) have been investigated using density functional theory. We have also optimized the structures of copper phthalocyanine (CuPc) and its substituted complex ...

Chemically modified electrodes, constructed by incorporating oxomolybdenum(V) phthalocyanine (OMo(V)(OH)Pc, Pc = phthalocyanine dianion) into graphite powder were used to catalyse the oxidation of cysteine. Solution catalysis of cysteine by oxomolybdenum(V) tetrasulfophthalocyanine, [OMo(V)(OH)T...

The structure of a hexaisoindoline iron(III) complex reported in 1962 was corrected as the one of a recently described helmet phthalocyanine-like iron(III) complex. Accordingly, its catalytic activities were compared to commercial Co(II) and Fe(II) driers towards the oxidation of bulk FAMEs thro...

Carbide-derived carbons (CDC) are porous carbon materials with tunable pore structure, very high specific surface area and of great potential for electrochemical applications. In this work CDC-supported transition metal macrocyclic electrocatalysts are prepared using two different type of CDC ma...

The electrochromic behaviour of sublimed, thin films of zirconium and molybdenum phthalocyanines is presented. The electrochromic properties of these MIV phthalocyanines are compared to those of the lanthanide diphthalocyanines. An explanation of the observed electrochromic phenomena in which th...

Reaction of ammonium heptamolybdate with fused phthalodinitrile (1,2-dicyanobenzene) gave blue oxomolybdenum(IV) phthalocyanine, MoO(C32H16N8) (MoOPc). Reactions involved in the preparation are discussed. MoOPc sublimes at 400°C in vacuo giving a violet second crystalline form. The IR spectrum ...

Charge transport in organic materials is one of the intrinsic properties, which governs the device performance. In this paper, we report the fabrication and electrical characterization of two diodes ITO/VOPc/MoO3/Al and ITO/VOPc/Al. We investigate the electrical conduction of Vanadyl phthalocyan...

2,4-Dihydroxybenzophenone (BP-1) is an important component and metabolite of benzophenone-type (BPs) UV filters, it is widely used in commercial products and frequently detected in environmental media and organism samples. The transformation characteristics and genotoxicity changes of BP-1 durin...

A new series of 2,4-dihydroxyquinoline derived disazo dyes has been synthesized by the reaction of 5-amino-4-phenylazo-3-methyl-1H-pyrazole derivatives with 2,4-dihydroxyquinoline. The structures of the obtained dyes were identified by various spectrophotometric methods such as FT-IR, 1H-NMR, an...

A facile one-step electrochemical synthesis of a platinum/reduced graphene oxide/poly(3-aminobenzoic acid) (Pt/rGO/P3ABA) nanocomposite film on a screen-printed carbon electrode (SPCE) and its application in the development of sensitive amperometric biosensors was successfully demonstrated herei...