Oxidation of phenol catalyzed by immobilized phthalocyanine complexes

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Synthesis and spectral characteristics of cyclohexylmethoxy-substituted phthalocyanines of rare-earth elements

New symmetrical metal complexes of the rare-earth element phthalocyanines were synthesized by the reaction of 4,5-bis(cyclohexylmethoxy)phthalonitrile, obtained for the first time, with the rare-earth element salts, as well as starting from the corresponding free phthalocyanine. A correlation between method of the synthesis and the reaction product compositions was studied. Structures of the complexes obtained were confirmed by mass spectrometry, X-ray crystallography, and electronic absorption spectroscopy. All the metal complexes are well soluble in organic solvents. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2343–2349, December, 2007.     

Electrocatalytic CO2 reduction in methanol catalyzed by mono-, di-, and electropolymerized phthalocyanine complexes

The electroreduction of CO₂ was studied in methanol in the presence of mono- and diphthalocyanine complexes and phthalocyanine films prepared by electrochemical anodic polymerization. Methyl formate is the main reaction product of the reaction catalyzed by the mono- and diphthalocyanine complexes of rare-earth metals. Copper 2,9,16,23-tetra-tert-butylphthalocyanine allows the transformation of CO₂ into methane in 30% yield. In the presence of both electropolymerized and graphite electrode-supported copper 2,9,16,23-tetraaminophthalocyanine, CO and methyl formate are the main reaction products.     

Highly selective solid-state sensor for iodide based on the combined use of platinum (IV) phthalocyanine and solidified pyridinium ionic liquid

Journal of Solid State Electrochemistry - Solid-state iodide-selective electrodes based on the commercial screen-printed electrodes modified with readily available low-melting ionic material (ionic...     

Application of Artificial Neural Networks to an Analysis of the Dynamic Structure of the Near-Earth Orbital Space

Russian Physics Journal - The first experience in application of artificial neural networks to a study of the dynamic structure of a selected region of the near-Earth orbital space is described. An...     

New phosphorus-containing metal phthalocyanine complexes. Synthesis and spectral and electrochemical studies

Hitherto unknown phosphorus-containing 4,5-bis(diethoxyphosphorylmethyl)- and 4-methyl-5-diethoxyphosphorylmethylphthalonitriles were synthesized starting from o-xylene. Their tetramerization afforded free phthalocyanine ligands and their complexes with Zn, Ni, Co, and a number of rare-earth metals. The spectral and electrochemical properties of the phthalocyanines synthesized were studied. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1634–1638, August, 2008.     

Sandwich Double‐Decker Lanthanide(III) “Intracavity” Complexes Based on Clamshell‐Type Phthalocyanine Ligands: Synthesis,Spectral, Electrochemical,and Spectroelectrochemical Investigations

Phthalocyanine compounds of novel type based on a bridged bis‐ligand, denoted “intracavity” complexes, have been prepared. Complexation of clamshell ligand 1,1′‐[benzene‐1,2‐diylbis(methanediyloxy)]bis[9(10),16(17),23(24)‐tri‐tert‐butylphthalocyanine] (^clam,tBuPc₂H₄, 1 ) with lanthanide(III) salts [Ln(acac)₃] ? n H₂O (Ln=Eu, Dy, Lu; acetylacetonate) led to formation of double‐deckers ^clam,tBuPc₂Ln ( 2 a – c ). Formation of high molecular weight oligophthalocyanine complexes was demonstrated as well. The presence of an intramolecular covalent bridge affecting the relative arrangement of macrocycles was shown to result in specific physicochemical properties. A combination of UV/Vis/NIR and NMR spectroscopy, MALDI‐TOF mass‐spectrometry, cyclic voltammetry, and spectroelectrochemistry provided unambiguous characterization of the freshly prepared bis‐phthalocyanines, and also revealed intrinsic peculiarities in the structure–property relationship, which were supported by theoretical calculations. Unexpected NMR activity of the paramagnetic dysprosium complex 2 b in the neutral π‐radical form was observed and examined as well.     

Effect of solvent and supporting electrolyte on redox conversions of electropolymerized copper tetraaminophthalocyanine

Electropolymerization of copper tetraaminophthalocyanine in dimethyl sulfoxide (DMSO) is studied, along with redox conversions of this polymer inDMSO and propylene carbonate (PC). At cathodic potentials, redox conversions of the polymer are similar to those of the monomer. At anodic potentials, the polymer exhibits some redox activity in PC and almost none, inDMSO. The redox conversions are attributed to the formation of a common system of conjugated bonds. Deceased.