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Contribution A Letude Physico Chimique Des Complexes Metalliques De La 8 Hydroxyquinoleine Et De La 2 Methyl 8 Hydroxyquinoleine En Relation Avec Leurs Applications En Chimie Analytique
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Book Synopsis Contribution à l'étude physico-chimique des complexes métalliques de la 8-hydroxyquinoléine et de la 2-méthyl-8-hydroxyquinoléine en relation avec leurs applications en chimie analytique by : Marcel Borrel
Download or read book Contribution à l'étude physico-chimique des complexes métalliques de la 8-hydroxyquinoléine et de la 2-méthyl-8-hydroxyquinoléine en relation avec leurs applications en chimie analytique written by Marcel Borrel and published by . This book was released on 1952 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The National Union Catalog, Pre-1956 Imprints by : Library of Congress
Download or read book The National Union Catalog, Pre-1956 Imprints written by Library of Congress and published by . This book was released on 1970 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Etudes théoriques de dérivés (HqX) de la 8-hydroxyquinoléine by : Yann Bulteau (docteur en science des matériaux).)
Download or read book Etudes théoriques de dérivés (HqX) de la 8-hydroxyquinoléine written by Yann Bulteau (docteur en science des matériaux).) and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La 8-hydroxyquinoléine (Hq) et ses dérivés (Hq chimiquement modifiée) sont connus pour leur capacité à complexer des ions métalliques. Ils sont mis en oeuvre dans la dépollution des effluents aqueux, la conception de composants électroluminescents, et l'inhibition de la corrosion de surfaces métalliques. Les propriétés de ces molécules et des complexes formés avec des ions métalliques dépendent des modifications chimiques réalisées sur la Hq. Nous effectuons des études théoriques sur la Hq et deux de ses dérivés, la 5,7-dibromo-8-hydroxyquinoléine (HqBr) et l'acide 8 hydroxyquinoléine-5-sulfonique (HqSH), dans le cadre de la Théorie de la Fonctionnelle de la Densité et en prenant en compte les forces de dispersion (DFT-D). Dans un premier temps, nous avons déterminé les formes stables des complexes issus de l'interaction entre un cation Al3+ et les molécules Hq, HqBr et HqSH déprotonées, puis nous avons effectué des analyses topologiques (ELF et QTAIM) de la structure électronique de ces complexes. Des liaisons ionocovalentes sont formées entre les molécules et l'ion Al3. Puis, nous avons étudié l'adsorption des molécules Hq, HqBr et HqSH déshydrogénées sur une surface Al(111), dans le vide et en présence d'eau (modèle de solvant implicite). Les trois types de molécules peuvent former des couches stables compactes sur la surface Al(111). A contrario, les topologies d'adsorption d'une molécule isolée sont différentes pour la Hq, dont l'efficacité en tant qu'inhibiteur de la corrosion de l'aluminium a été démontré expérimentalement, et pour les HqBr et HqSH, qui ne démontrentaucune efficacité en tant qu'inhibiteurs de corrosion. Ces conformations différentes des molécules sur la surface Al(111) en début du processus de formation des couches organiques, pourraient jouer sur leur propriété de protection de l'aluminium contre la corrosion. Enfin, la formation de complexes directement sur la surface Al(111) a été étudiée par dynamique moléculaire ab initio afin d'explorer l'espace des conformations. De nombreuses géométries stables ont été déterminées et la formation d'un complexe sur la surface par adsorption de trois molécules déshydrogénées sur une surface Al(111) présentant un ad-atome est favorisée par rapport à la précipitation d'un complexe Alq3 préalablement formé dans le vide. Ainsi, nous présentons dans ce travail une description : i) de la nature précise des liaisons dans les complexes Alq3, ii) des géométries des dérivés de la Hq adsorbés sur une surface Al(111), iii) de la formation sur Al(111) de complexes de type Alq3 par adsorption de molécules Hq déshydrogénées sur une surface Al(111).
Book Synopsis PROPRIETES PHOTOPHYSIQUES ET COMPLEXANTES DE LA 8-HYDROXYQUINOLEINE EN MILIEU ORGANIQUE ET MICELLAIRE INVERSE by : ISABELLE.. DEVOL
Download or read book PROPRIETES PHOTOPHYSIQUES ET COMPLEXANTES DE LA 8-HYDROXYQUINOLEINE EN MILIEU ORGANIQUE ET MICELLAIRE INVERSE written by ISABELLE.. DEVOL and published by . This book was released on 1996 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA 8-HYDROXYQUINOLEINE (8-HQ) EST UN AGENT COMPLEXANT TRES UTILISE EN EXTRACTION, OCCUPANT LA SECONDE PLACE APRES L'EDTA. SON CARACTERE FLUOROGENIQUE PEUT EGALEMENT ETRE UTILISE SOIT AVEC LA MOLECULE 8-HQ ELLE-MEME, SOIT AVEC UN CERTAIN NOMBRE DE SES DERIVES OU GRACE A L'INSERTION DANS DES STRUCTURES PLUS ELABOREES PRESENTANT UNE MEILLEURE SELECTIVITE QUE LA 8-HQ. CEPENDANT, LES PROPRIETES COMPLEXANTES ET FLUOROGENIQUES DE CETTE MOLECULE DEJA ANCIENNE SONT ENCORE MISES A PROFIT DE FACON EMPIRIQUE. L'ETUDE DU COMPORTEMENT DE LA 8-HQ ENTREPRISE ICI A PERMIS D'ETABLIR QU'IL EXISTE EN SOLUTION AQUEUSE UNE LIAISON HYDROGENE INTRAMOLECULAIRE ENTRE LES GROUPEMENTS -OH ET N. DANS LES ALCANES, IL EST MONTRE POUR LA PREMIERE FOIS QU'IL SE FORME DES DIMERES D'UNE GRANDE STABILITE, ALORS QUE DANS LES SOLVANTS CHLORES, UNE MOLECULE D'EAU PONTE VRAISEMBLABLEMENT LES GROUPEMENTS FONCTIONNELS. DANS LES TROIS TYPES DE SOLVANTS, L'EXCITATION DE LA MOLECULE CONDUIT A LA FORMATION D'UN TAUTOMERE NON FLUORESCENT, RESULTANT DE TRANSFERTS COUPLES DE PROTONS ET D'ELECTRON. EN PRESENCE DE TENSIOACTIFS ANIONIQUE (AOT) OU CATIONIQUE (CTAC), IL EST OBSERVE UN PHENOMENE D'ASSOCIATION QUI DIMINUE LA PROBABILITE DE TAUTOMERISATION PHOTOINDUITE ET ENGENDRE UNE EMISSION DE FLUORESCENCE. LA COMPLEXATION AVEC UN CATION METALLIQUE REDUIT EGALEMENT DE FACON CONSIDERABLE LES POSSIBILITES DE TAUTOMERISATION. LE CHELATE EST DONC FLUORESCENT. DES COMPLEXATIONS AVEC L'ION ALUMINIUM (NEUROTOXIQUE) ONT ETE REALISEES ET ETUDIEES SUR LE PLAN THERMODYNAMIQUE ET CINETIQUE EN PHASE HOMOGENE ET EN MICELLES INVERSES OU IL EST OBSERVE UNE EXALTATION DE FLUORESCENCE REMARQUABLE DE L'OXINATE: UN FACTEUR D'EXALTATION DE 120 A ETE OBTENU ICI EN MILIEU AOT/HEPTANE PAR RAPPORT A LA SOLUTION AQUEUSE, SUPERIEUR A TOUS CEUX PUBLIES PRECEDEMMENT. CE PHENOMENE A ETE INTERPRETE COMME RESULTANT D'UNE DIMINUTION DE LA PROBABILITE DE PHOTORUPTURE DE LA LIAISON -O-METAL AU SEIN DES OXINATES
Book Synopsis Synthèse de la quinolobactine, de l'Entérobactine et leurs dérivés. Etudes de la complexation du fer by : Nivine Alnaga
Download or read book Synthèse de la quinolobactine, de l'Entérobactine et leurs dérivés. Etudes de la complexation du fer written by Nivine Alnaga and published by . This book was released on 2007 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les sidérophores sont des chélateurs du fer sécrétés par les microorganismes. Ce travail concerne la synthèse et l'étude de la Quinolobactine et de l'Entérobactine ainsi que leurs dérivés. Nous avoM.. détenniné la structure du complexe Quinolobactine fer par RX et démontré grâce à la fluoroquinolobactine l'identité de structures en solution (SM-ESI, RMN IH et 19F). Une nouvelle méthode simple et efficace de synthèse de quinoléines 2,4-disubstuées a été découverte. Nous avons également synthétisé des conjugués d'Entérobactine avec du phosphore et bore comme des antimétabolites. La synthèse d'antibiotique dérivé boré de la cyproflaxacine puis sa conjugaison avec l'Entérobactine est décrite (stratégi( du Cheval de Troie). Enfin nous avons abordé la synthèse et l'étude physico-chimique d'un analogue biomimétique de l'Entérobactine comportant le 8-hydroxyquinoléine.
Download or read book ICREEC 2019 written by Ahmed Belasri and published by Springer Nature. This book was released on 2020-06-10 with total page 659 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights peer reviewed articles from the 1st International Conference on Renewable Energy and Energy Conversion, ICREEC 2019, held at Oran in Algeria. It presents recent advances, brings together researchers and professionals in the area and presents a platform to exchange ideas and establish opportunities for a sustainable future. Topics covered in this proceedings, but not limited to, are photovoltaic systems, bioenergy, laser and plasma technology, fluid and flow for energy, software for energy and impact of energy on the environment.
Book Synopsis Scientific Basis for Nuclear Waste Management XXII: Volume 556 by : David J. Wronkiewicz
Download or read book Scientific Basis for Nuclear Waste Management XXII: Volume 556 written by David J. Wronkiewicz and published by . This book was released on 1999-11-24 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Safe and effective management of nuclear waste provides a broad range of challenges for materials science. Waste processing, waste form and engineered barrier properties, interactions between engineered and geological systems, radiation effects, chemistry and transport of waste species, and long-term predictions of repository performance are just some of the scientific problems facing modern society. This book, the 22nd in a very successful series from MRS, offers an international and inter-disciplinary perspective on the issues, and features developments in both fundamental and applied areas. Topics include: development and characterization of ceramic waste forms; ceramic waste form corrosion; glass waste form processing; glass formulation, properties and structure; glass waste form corrosion; spent nuclear fuel; performance assessment; repository backfill; flow and transport; natural analogues; container corrosion; metal waste form corrosion; radionuclide speciation and solubility; radionuclide sorption; microbial effects; radiation effects; cement waste forms and waste treatment.
Book Synopsis Scientific Basis for Nuclear Waste Management XXIII: Volume 608 by : Robert W. Smith
Download or read book Scientific Basis for Nuclear Waste Management XXIII: Volume 608 written by Robert W. Smith and published by . This book was released on 2000-10-09 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-standing symposia series has become the premier, international forum for scientific and engineering issues related to all levels and types of radioactive wastes and their management. Topics include: fuel cladding and spent nuclear fuel; container fabrication and corrosion; performance assessment; repository performance; radionuclide sorption and transport; cement-based materials and waste containment; corrosion of ceramic wasteforms; structure and characterization of ceramics; radiation effects; natural analogs; wasteform characterization and processing; and corrosion and characterization of glass wasteforms.
Book Synopsis Essentials in Modern HPLC Separations by : Serban C. Moldoveanu
Download or read book Essentials in Modern HPLC Separations written by Serban C. Moldoveanu and published by Elsevier. This book was released on 2022-06-24 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essentials in Modern HPLC Separations, Second Edition discusses the role of separation in high performance liquid chromatography (HPLC). This new and updated edition systematically presents basic concepts as well as new developments in HPLC. Starting with a description of basic concepts, it provides important guidance for the practical utilization of various HPLC procedures, such as the selection of the HPLC type, proper choice of the chromatographic column, selection of mobile phase and selection of the method of detection, all of which are in correlation with the physico-chemical characteristics of the compounds separated. Every chapter has been carefully reviewed, with several new sections added to bring the book completely up-to-date. Hence, it is a valuable reference for students and professors in chemistry. Provides a thoroughly updated resource, with an entirely new section on Computer-aided Method Development in HPLC and new subsections on miniaturization and automation in HPLC, chemometric aspects of HPLC, green solvent use in HPLC, and more Includes insights into the chromatographic process to find the optimum solution for analyzing complex samples Presents a basis for understanding the utilization of modern HPLC for applications, particularly for the analysis of pharmaceutical, biological, food, beverage and environmental samples
Book Synopsis Desorption Mass Spectrometry by : Philip A. Lyon
Download or read book Desorption Mass Spectrometry written by Philip A. Lyon and published by . This book was released on 1985 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridges the gap between SIMS and FAB mass spectrometry. Focuses on surface techniques that can use either SIMS or FAB mass spectrometry. Includes fundamentals, instrumental design, and applications. Demythologizes particle bombardment by addressing both the chemistry and physics involved.
Book Synopsis Bioconversion of Waste Materials to Industrial Products by : A.M. Martin
Download or read book Bioconversion of Waste Materials to Industrial Products written by A.M. Martin and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: By covering both the general principles of bioconversion and the specific characteristics of the main groups of waste materials amenable to bioconversion methods, this new book provides the chemical, biochemical, agrochemical and process engineer with clear guidance on the use of these methods in devising a solution to the problem of industrial waste products.
Book Synopsis Forest Fire Research by : Universidade de Coimbra
Download or read book Forest Fire Research written by Universidade de Coimbra and published by . This book was released on 2010 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Guide to Practical Radiochemistry by : An. N. Nesmejanov
Download or read book Guide to Practical Radiochemistry written by An. N. Nesmejanov and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Chromatographic Analysis Of Vitamins by : Andre P. De Leenheer
Download or read book Modern Chromatographic Analysis Of Vitamins written by Andre P. De Leenheer and published by CRC Press. This book was released on 2000-04-18 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt: Third Edition collects and examines the tremendous proliferation of information on chromatographic analysis of fat and water soluble vitamins over the last decade. Extensively describes sample preparation and final measurement.
Book Synopsis Copper Coordination Chemistry by : Kenneth D. Karlin
Download or read book Copper Coordination Chemistry written by Kenneth D. Karlin and published by . This book was released on 1983 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to Microwave Sample Preparation by : H.M. Kingston
Download or read book Introduction to Microwave Sample Preparation written by H.M. Kingston and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to microwave acid decomposition; Microwave heating: theoretical concepts and equipment design; Guidelines for developing microwave dissolution methods for geological and metallurgical samples.
Book Synopsis Physics Experiments Using PCs by : H.M. Staudenmaier
Download or read book Physics Experiments Using PCs written by H.M. Staudenmaier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physics practical classes form an important part of many scientific and technical courses in higher education. In addition to the older standard experiments, such practicals now generally include a few computer-controlled experiments developed in association with the research groups active in the particular university or college. Since there is relatively little exchange of information between the teaching staff of different institutes, the personal computer, despite its ubiquity, is underexploited in this role as a teaching aid. The present book provides a detailed description of a number of computer-controlled experiments suitable for practical classes. Both the relevant physics and the computational techniques are presented in a form that enables the readers to construct and/or perform the experiment themselves.
