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Direct visualization of pyrrole reactivity by confined oxidation in a Cyclodextrin Metal‐Organic Framework

2019

Metal-organic frameworks can be used as porous templates to exert control over polymerization reactions. Shown here are the possibilities offered by these crystalline, porous nanoreactors to capture highly‐reactive intermediates for a better understanding of the mechanism of polymerization reactions. By using a cyclodextrin framework the polymerization of pyrrole is restricted, capturing the formation of terpyrrole cationic intermediates. Single‐crystal X‐ray diffraction is used to provide definite information on the supramolecular interactions that induce the formation and stabilization of a conductive array of cationic complexes.

technology industry and agricultureQuímica organometàl·licamacromolecular substancesReactivitat (Química)
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Nanofilm Low Cost Oxygen Sensors

2009

Abstract The resitivity change of ultra thin metals under air exposure is used for vacuum or inert gas packaging control. In order to reach low cost, single use applications, few nm thin Aluminum layers were deposited on PET substrates and combined with wireless electronic readout circuitry. The sensor respose is characterized by resistance changes and explained in terms of multiphase diffusion mechanisms which are very sensitive to technological parameters.

ultrathin metalsMaterials scienceSingle useChemistry(all)technology industry and agriculturechemistry.chemical_elementNanotechnologyGeneral Medicineoxygen sensornanofilmAir exposurechemistryAluminiumChemical Engineering(all)sense organsDiffusion (business)Inert gasOxygen sensorProcedia Chemistry
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Kinetic evidence for the incorporation of the [(pentamethylcyclopentadienyl) (2,2′-bipyridyl)(aquo)rhodium(III)] complex into DPPC vesicles

2008

Abstract The binding of the [(pentamethylcyclopentadienyl) (2,2′-bipyridyl)(aquo)rhodium(III)] complex [Cp*RhIII(bpy)H2O]2+, to l -α-dipalmitoylphosphatidyl choline (DPPC) vesicles has been estimated by studying the kinetics of the electron transfer reaction between the rhodium(III) complex and formiate ions. Kinetic measurements carried out under anaerobic conditions in absence and presence of DPPC show that the total reaction is composed of two steps. The rate of the first reaction increases with the phospholipid concentration, while that of the second process is independent of the concentration of DPPC. This is consistent with a reaction, where the two reacting species are partitioned be…

vesicles L-alfa-dipalmitoylphosphatidyl choline (DPPC) rate constant bindingAqueous solutionLiaisonStereochemistryVesicleKineticstechnology industry and agriculturePhospholipidchemistry.chemical_elementBinding constantRhodiumchemistry.chemical_compoundCrystallographyElectron transferColloid and Surface Chemistrychemistrylipids (amino acids peptides and proteins)Colloids and Surfaces A: Physicochemical and Engineering Aspects
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