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Auteur Rachid Kitouni |
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Titre : Elaboration et caractérisation de fils moléculaires et applications Type de document : texte imprimé Auteurs : Rachid Kitouni, Auteur ; Ouarda Brahmia, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 146 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : fils moléculaires OPE mesure de conductivité effet d’épinglage complexes acétylures métalliques à ligand cyclam OPE molecular wire conductivity measurement Pinning effect metal
alkynyl supported by cyclam الخيوط الجزيئية OPEقياس الناقلية تأثير التعليق المعقدات معدن ألكين المحمولة من السيكلامIndex. décimale : 540 Chimie et sciences connexes Résumé : This work is devoted to the synthesis and characterization of OPE-type molecular threads as well as metal alkynyl with cyclam ligand complexes. In the first part of this manuscript, we presented the synthesis of OPE (Oligo(phenylene ethylene)) molecular wires with different central cores in order to obtain various wire with different HOMO-LUMO energy levels. Our (collaborative) goal is to check and rationalize the pinning effect factor occurring in molecular junctions with these molecular wires using CP-AFM and MCBJ conductivity techniques and theoretical calculations. This technique demonstrated the origin of the pinning effect as being a strong hybridization between the orbitals of the anchoring group and those of the metal atoms. The insertion of saturated spacers is a simple way of reducing the pinning effect, by reducing the strong coupling stablished between the molecular wires and the electrode. In the second part we present the synthesis of the three metal alkynyl with cyclam ligand complexes. This kind of complexes possessing conductive, voltammetric and magnetic properties, their electronic flexibility conferring on them specific molecular characteristics that we can use it for applications in electronics industries.
Diplôme : Doctorat en sciences En ligne : ../theses/chimie/KIT7357 Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11006 Elaboration et caractérisation de fils moléculaires et applications [texte imprimé] / Rachid Kitouni, Auteur ; Ouarda Brahmia, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 146 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : fils moléculaires OPE mesure de conductivité effet d’épinglage complexes acétylures métalliques à ligand cyclam OPE molecular wire conductivity measurement Pinning effect metal
alkynyl supported by cyclam الخيوط الجزيئية OPEقياس الناقلية تأثير التعليق المعقدات معدن ألكين المحمولة من السيكلامIndex. décimale : 540 Chimie et sciences connexes Résumé : This work is devoted to the synthesis and characterization of OPE-type molecular threads as well as metal alkynyl with cyclam ligand complexes. In the first part of this manuscript, we presented the synthesis of OPE (Oligo(phenylene ethylene)) molecular wires with different central cores in order to obtain various wire with different HOMO-LUMO energy levels. Our (collaborative) goal is to check and rationalize the pinning effect factor occurring in molecular junctions with these molecular wires using CP-AFM and MCBJ conductivity techniques and theoretical calculations. This technique demonstrated the origin of the pinning effect as being a strong hybridization between the orbitals of the anchoring group and those of the metal atoms. The insertion of saturated spacers is a simple way of reducing the pinning effect, by reducing the strong coupling stablished between the molecular wires and the electrode. In the second part we present the synthesis of the three metal alkynyl with cyclam ligand complexes. This kind of complexes possessing conductive, voltammetric and magnetic properties, their electronic flexibility conferring on them specific molecular characteristics that we can use it for applications in electronics industries.
Diplôme : Doctorat en sciences En ligne : ../theses/chimie/KIT7357 Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11006 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KIT/7357 KIT/7357 Thèse Bibliothèque principale Thèses Disponible Isolement et determination des métabolites secondaires de l'exsudat toluene-acetate d'ethyle de Centaurea calcitrapa (Asteraceae) / Rachid Kitouni
Titre : Isolement et determination des métabolites secondaires de l'exsudat toluene-acetate d'ethyle de Centaurea calcitrapa (Asteraceae) Type de document : texte imprimé Auteurs : Rachid Kitouni ; Samir Benayache, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2007 Importance : 119 f. Note générale : 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Flavonoides Compositae Centaurea calcitrapa Sesduiterpène lactones Index. décimale : 540 Chimie et sciences connexes Résumé : This work makes part of our research program of Algerian medicinal plants of the genus Centaurea (Compositae). Studies that we undertook concern the determination of flavonoids and sesquiterpene lactones of the genus Centaurea calcitrapa. This work completes our pervious results of flavonoids and sesquiterpene lactones ofthe genus Centaurea calcitrapa. The extraction and purification of the different constituents, based on the use of a combination of chromatographic methods, and their structural determination,
performed by physico-chemical and spectroscopic methods, such as ultraviolet and nuclear magnetic resonance spectroscopy, allowed us to isolate six simples flavonoids derivatives: Eupatorine, Eupatiline, Jaceosidine, Cirsiliol, Hispiduline and Apigenin, and one sesquiterpene lactones: Cnicin were also isolated from aerial parts of this plant These compounds were already reported from this plant but the three aglycons (Eupatorine, Eupatiline, and Cirsiliol) were described for the first time from this plant.Diplôme : Magistère En ligne : ../theses/chimie/KIT4768.pdf Permalink : index.php?lvl=notice_display&id=3756 Isolement et determination des métabolites secondaires de l'exsudat toluene-acetate d'ethyle de Centaurea calcitrapa (Asteraceae) [texte imprimé] / Rachid Kitouni ; Samir Benayache, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2007 . - 119 f.
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Flavonoides Compositae Centaurea calcitrapa Sesduiterpène lactones Index. décimale : 540 Chimie et sciences connexes Résumé : This work makes part of our research program of Algerian medicinal plants of the genus Centaurea (Compositae). Studies that we undertook concern the determination of flavonoids and sesquiterpene lactones of the genus Centaurea calcitrapa. This work completes our pervious results of flavonoids and sesquiterpene lactones ofthe genus Centaurea calcitrapa. The extraction and purification of the different constituents, based on the use of a combination of chromatographic methods, and their structural determination,
performed by physico-chemical and spectroscopic methods, such as ultraviolet and nuclear magnetic resonance spectroscopy, allowed us to isolate six simples flavonoids derivatives: Eupatorine, Eupatiline, Jaceosidine, Cirsiliol, Hispiduline and Apigenin, and one sesquiterpene lactones: Cnicin were also isolated from aerial parts of this plant These compounds were already reported from this plant but the three aglycons (Eupatorine, Eupatiline, and Cirsiliol) were described for the first time from this plant.Diplôme : Magistère En ligne : ../theses/chimie/KIT4768.pdf Permalink : index.php?lvl=notice_display&id=3756 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KIT/4768 KIT/4768 Thèse Bibliothèque principale Thèses Disponible
