Literatura científica selecionada sobre o tema "Ions alcalino-terreux"
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Artigos de revistas sobre o assunto "Ions alcalino-terreux"
Pointud, Yvon, Elisabeth Passelaigue e Jean Juillard. "Mode d’action de la calcimycine. III — Enthalpies et entropies d’interaction avec les ions alcalino-terreux dans le méthanol". Journal de Chimie Physique 84 (1987): 929–33. http://dx.doi.org/10.1051/jcp/1987840929.
Texto completo da fonteTeses / dissertações sobre o assunto "Ions alcalino-terreux"
AL, MOUSSALAMI SAMIR. "Photoionisation des atomes et des ions : application aux alcalino-terreux". Paris 11, 1998. http://www.theses.fr/1998PA112055.
Texto completo da fonteDuriez-Rebufatti, Marie Christine. "Polyamides macrocycliques et linéaires : synthèse et propriétés complexantes vis-à-vis d'ions alcalino-terreux". Toulouse 3, 1991. http://www.theses.fr/1991TOU30239.
Texto completo da fonteBARAKAT, NADIA. "Proprietes extractantes des derives claix4arenes ionisables vis-a-vis des ions alcalins et alcalino-terreux". Université Louis Pasteur (Strasbourg) (1971-2008), 1997. http://www.theses.fr/1997STR13070.
Texto completo da fontePochard, Isabelle. "Etude des equilibres dans le systeme acide polyacrylique / ions alcalins et alcalino-terreux en presence d'hematite". Besançon, 1999. http://www.theses.fr/1999BESA2047.
Texto completo da fonteD'ALMEIDA, THIERRY. "Cathodoluminescence des ions de terres rares dans les fluorures alcalino-terreux : utilisation comme sonde locale de temperature et applications". Reims, 1997. http://www.theses.fr/1997REIMS008.
Texto completo da fonteBOUYER, FREDERIC. "Etude analytique, par des techniques de modelisation, de l'influence de cations alcalins ou alcalino-terreux sur la stabilite et la reactivite de complexes de l'aluminium(iii) avec des ions halogenures ou oxydes". Paris 6, 1995. http://www.theses.fr/1995PA066549.
Texto completo da fonteMurgia, Fabrizio. "Eléments du block p comme matériaux d'électrode négative pour accumulateurs Magnésium-ion : mécanismes électrochimiques et performances". Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT210/document.
Texto completo da fonteOne of the most challenging hurdles that the World has to face in the next decades is the sustainable use of energy. In a scenario where western societies are largely dependent of the fossil fuels for maintaining their wellness, i.e. for heating, automotive transportation and electricity production, and developing countries need to feed their growing economies, it is worth underlying both the major impact on the environment due to the indiscriminate use of such combustibles but also the geopolitical issues for the non-producing countries. Energy harvesting by renewable sources can help limiting the dependence on fossil fuel exploitation but cannot perfectly replace conventional power plant due to its intrinsic intermittency.Batteries are the devices that can draw a line under this situation, since they can stock the energy surplus when the plant is operating and then can squeeze it in the power grid when there is a lack of production. Moreover, they are also targeted to fulfil the even growing demand of energy for portable applications (mobile phones and computers, and nowadays cars and trucks). The excellent performance and the well-established technology of Lithium-ion batteries (LIBs) put them in a crucial position for supporting this new energy revolution. However their ubiquitous role has been recently questioned for two main reasons: i) of the low availability of Li, which is a rare and not-uniformly spread element that may lead to the similar problems caused by fossil fuels. And ii) the effective capacity to satisfy the highly energy-demanding applications, since Li-ion technology seems reaching is upper limit in terms of overall performance. Therefore cheaper and more powerful alternative to Li-based systems are needed.Post-Lithium-based batteries, based on other charge carriers than Li+ can be offer safer, more sustainable and performing alternative to LIBs. Mg is a promising candidate that can replace Li in electrochemical systems due to its abundance, low cost and a theoretical volume capacity twice higher than that of Li. Although the efforts devoted to the realization of a rechargeable Mg battery were made in the last 15 years, the major hurdle represented by the low compatibility between metallic Mg and conventional electrolytes still obliges the use of hazardous salt/solvent mixtures in research prototypes. Searching alternative negative electrodes to the Mg metal, i.e. compounds able to reversibly react with Mg at low potential, will pave the way for a veritable Magnesium-ion battery (MIB), allowing the use of conventional electrolytes.The present thesis is devoted to investigate the electrochemical behaviour of several p-block elements that can reversibly alloy with Mg at low potential (In, Sn, Sb, Bi). Possible synergies between these elements are also explored, realizing composite materials (Sn-Bi), or intermetallic phases (BixSb1-x and InBi) that could be employed as negative electrodes in MIBs. The chosen synthetic route for obtaining micrometric-sized particles is the mechanical milling/alloying, since it is simple, cost-effective and upscalable. Particular attention is put on the study of electrochemical mechanisms through the operando X-ray diffraction. Electrochemical performance evaluation allows selecting the best candidate for an effective test as negative electrode in MIB prototype
Ganesan, Parameshwari. "Investigation of Luminescent Properties in Rare-Earth free Metallophosphonate Hybrid Materials : structural Insights in photophysical studies". Electronic Thesis or Diss., Normandie, 2023. http://www.theses.fr/2023NORMC266.
Texto completo da fonteThis thesis work systematically investigates the structural and photophysical properties of rare-earth-free metallophosphonate hybrid luminescent materials, emphasizing the role of structure in luminescent properties. Metallophosphonates demonstrate exceptional versatility with their coordination chemistry, highlighted by their ability to interact with multiple metal centers and form robust P-O-M metal bonds. We aim to study crystalline organic-inorganic hybrid luminescent materials in which the organic part provides a rigid platform which is easily modifiable with various functional groups. we present various metallophosphonate hybrids synthesized through the hydrothermal route using functionalized organic ligands such as Fluorene, Thianthrene, and Tetraphenylethylene (TPE) phosphonic acid with different alkaline-earth elements (Mg, Ca, Sr, Ba) and transition elements (Mn, Co, Cu, Zn). Different metallophosphonate materials are obtained by manipulating the nature of molecules, the number of functional groups, and the characteristics of cations in the structure. Due to that, the synthesized metallophosphonate hybrid materials exhibit diverse structural properties, including rigidity, thermal stability, and different arrangements like face-to-face or edge-to-face and herringbone stacking patterns. Furthermore, these materials display intriguing luminescent properties, such as Fluorescence, Room Temperature Phosphorescence (RTP), Bathochromic and Hypsochromic shift (red and blue shift), Excimer emission, and other novel green and red luminescence bands, particularly in the presence of specific cations. Lastly, we discuss and explore the interconnection between structural and physical properties including the phenomena of Aggregation Induced Emission (AIE) and Aggregation Enhanced Emission (AEE) for hybrid compounds
Morel-Desrosiers, Nicole. "Contribution a la thermodynamique des solutions de cryptates alcalins et alcalino-terreux dans l'eau et le methanol". Clermont-Ferrand 2, 1987. http://www.theses.fr/1987CLF2E374.
Texto completo da fonte