Search results for "lanthanide bis-phthalocyanines"

showing 3 items of 3 documents

Novel Lipophilic Lanthanide Bis-Phthalocyanines Functionalized by Pentadecylphenoxy Groups: Synthesis, Characterization and UV-Photostability

2012

Novel sandwich-type phthalocyanines containing a rare earth metal core (Pr, Nd, Eu-Lu) and macrocycles peripherally substituted by pentadecylphenoxy groups were synthesized using a cardanol-based phthalonitrile precursor and the respective lanthanide acetate. Additionally, the metal free-base analog compound was studied for comparison. The purified reaction products were all found to be thick and viscous substances at room temperature, showing liquid crystalline behavior with a distinct increase in fluidity at ca. 40 ° C. The complexes are readily soluble in chloroalkyl solvents and dissolve fairly well in DMF with some tendency to form aggregates. Besides they are strongly hydrophobic and …

LanthanideIndolesMagnetic Resonance SpectroscopyUltraviolet Rayslanthanide bis-phthalocyaninePharmaceutical ScienceIsoindolesPhotochemistryphotostabilityLanthanoid Series ElementsArticleAnalytical Chemistrylcsh:QD241-441Phthalonitrilechemistry.chemical_compoundUltraviolet visible spectroscopylcsh:Organic chemistrylanthanide bis-phthalocyanines; cardanol; UV-Vis spectroscopy; photostabilityDrug DiscoverycardanolPhysical and Theoretical ChemistryPhotodegradationlanthanide bis-phthalocyaninesDichloromethaneCardanolPhotolysisMolecular StructureOrganic ChemistryUV-Vis spectroscopychemistryChemistry (miscellaneous)Molecular MedicineDimethylformamideAbsorption (chemistry)Molecules
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Comparison of the photocatalytic degradation of 2-propanol in gas–solid and liquid–solid systems by using TiO2–LnPc2 hybrid powders

2009

Photocatalytic degradation of 2-propanol was carried out as a probe reaction both in gas–solid and in liquid–solid systems in the presence of TiO2 both bare and impregnated with lanthanide (Sm, Gd, Ho) bis-phthalocyanines (LnPc2) used as sensitizers. Continuous and batch photo-reactors, irradiated with an equal flux of photons, were used in gas–solid and in liquid–solid systems, respectively. Propanone and acetaldehyde were the main intermediates found in both systems during 2-propanol oxidation, whereas carbon dioxide and water were the final oxidation products exclusively in the gas–solid regime. The photocatalysts exhibited significantly higher activity in the liquid–solid system than in…

LanthanideLanthanide bis-phthalocyaninesInorganic chemistryAcetaldehydeBinary compoundGeneral ChemistryHeterogeneous catalysisCatalysisCatalysisTitanium oxide2-PropanolHeterogeneous photocatalysisPropanolchemistry.chemical_compoundchemistryPhotocatalysisTiO2Catalysis Today
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COMPARISON OF THE PHOTOCATALYTIC DEGRADATION OF 2-PROPANOL IN GAS-SOLID AND LIQUID-SOLID SYSTEMS BY USING TiO2 – LnPc2 HYBRID POWDERS

2009

Photocatalytic degradation of 2-propanol was carried out as a probe reaction both in gas–solid and in liquid–solid systems in the presence of TiO2 both bare and impregnated with lanthanide (Sm, Gd, Ho) bis-phthalocyanines (LnPc2) used as sensitizers. Continuous and batch photo-reactors, irradiated with an equal flux of photons, were used in gas–solid and in liquid–solid systems, respectively. Propanone and acetaldehyde were the main intermediates found in both systems during 2-propanol oxidation, whereas carbon dioxide and water were the final oxidation products exclusively in the gas–solid regime. The photocatalysts exhibited significantly higher activity in the liquid–solid system than in…

TiO2Settore CHIM/07 - Fondamenti Chimici Delle TecnologieLanthanide bis-phthalocyanines 2-PropanolHeterogeneous photocatalysiLanthanide bis-phthalocyanines2-Propanol Heterogeneous photocatalysisTiO2
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