186 research outputs found
EPR Study of Ternary Complexes of Copper(II), 1,10-Phenantroline and Oxidised Glutathione
No full text
Caratterizzazione Strutturale del Complesso Ternario Cu-(L-*-glutamil-L-cisteinil)-(2-2’-disolfuro)glicina)-1,10-o-Fenantrolina in Soluzione
No full textAttività Antimicrobica e Caratterizzazione Spettroscopica di Complessi del Cu(II) con Fenantroline
No full textUno Studio sulle Caratteristiche strutturali e redox di complessi ternari del rame con proprietà auxiniche
No full textTernary Complexes of Cu(II)-1,10-o-Phenanthrolines with Auxins in Liquid and Solid State Studied by Multifrequency Computer Aided ESR Spectroscopy
No full textInfluence of the headgroup molecular structure on the anionic surfactant-PVP interaction studied by Electron Paramagnetic Resonance of a cationic nitroxide
No full textIn the present work the mixtures water–sodium decylsulfate (C10OS)-poly(vinylpyrrolidone) (PVP) and water–sodium decylsulfonate (C10S)–PVP have been investigated by electron paramagnetic resonance (EPR) spectroscopy employing 4-(N,N-dimethyl-N-(2-hydroxyethyl)) ammonium-2,2,6,6-tetramethyl-piperidine-1-oxyl chloride (TEMPO-choline, TC) as spin probe. TC cations condense on the surface of the aggregates formed by anionic surfactants, acting as counterions, and fit their NO moiety in the outer shell of the hydrophobic core. In water–C10OS–PVP mixtures the nitrogen isotropic hyperfine coupling constant of TC (〈AN〉), reported as a function of the surfactant molality at constant PVP composition, shows two breakpoints: the former (critical aggregation concentration, c.a.c.) corresponds to the formation of surfactant–polymer clusters while the latter (c2) corresponds to the formation of free surfactant micelles. The trend of the correlation time (τC) of the nitroxides in the same system shows that the electrostatic repulsion among the clusters formed onto the PVP macromolecules favours a broadening of the polymer coil and a stiffening of its chain. In contrast, in water–C10S–PVP mixtures no surfactant–polymer interaction could be detected. The effect of the molecular structure of the surfactant headgroup on the surfactant–polymer interaction has been discussed in terms of charge density distribution. In order to further highlight the importance of the headgroup molecular structure on the surfactant association behaviour, the micellisation process of the sodium alkylsulfates (CnOS, n = 6,8,10) has been investigated by the same experimental approach, and the results have been compared with those, previously reported (A. M. Tedeschi, G. D'Errico, E. Busi, R. Basosi and V. Barone, Phys. Chem. Chem. Phys., 2002, 4, 2180, ref. 46), relative to the sodium alkylsulfonates (CnS). CnOS micelles are more ordered and compact with respect to the CnS ones. For the former class of surfactants the electrostatic interaction with TC is stronger and the hydrophobic behaviour of the TC solubilization site is higher
Synthesis, Spectroscopic and X-Ray Structure Characterization of Copper(II) Ternary Complexes
No full textLife Cycle Inventory datasets for nano-grid configurations
No full textDatasets concerning some user-scale Smart Grids, named Nano-grids, are reported in this paper. First several Solar Home Systems composed of a photovoltaic plant, a backup generator and different types of lithium-ion batteries are provided. Then, the inventory analysis of hybrid Nano-grids integrating batteries and hydrogen storage is outlined according to different scenarios. These data inventory could be useful for any academic or stakeholder interested in reproducing this analysis and/or developing environmental sustainability assessment in the field of Smart Grids. For more insight, please see “Environmental analysis of a Nano-Grid: a Life Cycle Assessment” by Rossi F, Parisi M.L., Maranghi S., Basosi R., Sinicropi A. [1]
- …
