Electrical properties of PANI/chalcogenide junctions doped with ionic liquids anions / Abdelkader Benabdellah in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 3 (04-05/2012)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 49, N° 3 (04-05/2012) . - p. 241-246 Titre : Electrical properties of PANI/chalcogenide junctions doped with ionic liquids anions Type de document : texte imprimé Auteurs : Abdelkader Benabdellah, Auteur ; El-Habib Belarbi, Auteur ; Hocine Ilikti, Auteur ; Mustapha Hatti, Auteur ; Bekhaled Fettouhi, Auteur Année de publication : 2012 Article en page(s) : p. 241-246 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anions Chalcogénures Conducteurs organiques Eméraldine Liquides ioniques Polyaniline Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Ionic liquids like 1-butyl-3-methylimidazolium chloride ([BMIM] Cl, 1-butyl-3-methyl-imidazolium hexafluorophosphate [BMIM] PF6, 1-butyl-3-methyl-imidazolium tetrafluorobrate [BMIM] BF4, 1-butyl-3-methyl-imidazolium bis (trifluoromethylsulfonyl) imide [BMIM] NTf2) were used as doping elements in polyaniline. Pure polyaniline (EB) and polyaniline doped with different anions of ionic liquids (ESs) were chemically synthesized using ammonium peroxydisulphate (APS) and ionic liquids as oxidants. Junctions have been prepared by evaporating chalcogenide materials (ZnSe, CdSe) on conducting polyaniline (EB & ESs) pellets using a vacuum evaporation technique. I-V characteristics of junctions have been studied at room temperature using the Keithley electrometer 6517A. I-V measurements show the rectification effect. A junction of ES [BF???] anion may be preferred over the other junctions due to its low ideality factor and maximum rectification ratio. Note de contenu : - EXPERIMENTAL : Reagents and instruments - Preparation of the ionic liquids - Preparation of emeraldine salts by ionic liquide - Electrical measurements thin films of chalcogenide materials - RESULTS : Raman spectra of PANI films - I-V characteristics between PANI (EB & ESs) heterojunctions and chalogenide material (ZnSe, CdSe) Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14913 [article]

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Electrocatalytic Hydrogenation and Hydrogenolysis of Aromatic Halides by Raney Nickel in the Presence of Different Surfactants / Hocine Ilikti in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 45, N° 3/2008 (05-06/2008)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 45, N° 3/2008 (05-06/2008) . - p. 126-130 Titre : Electrocatalytic Hydrogenation and Hydrogenolysis of Aromatic Halides by Raney Nickel in the Presence of Different Surfactants Type de document : texte imprimé Auteurs : Hocine Ilikti, Auteur ; T. Benabdallah, Auteur ; S. Boukreris, Auteur ; M. R. Aouad, Auteur ; E. S. H. El Ashry, Auteur Année de publication : 2008 Article en page(s) : p. 126-130 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composés aromatiques Halogénures Hydrogénation Hydrogénolyse Surfactants Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Electrocatalytic hydrogenolysis and hydrogenation of 4-halophenols, 4-chloroaniline and chloronitrobenzene have been investigated in aqueous media using different surfactant agents on two kinds of cathodes investigated on, Raney nickel electrode and carbon electrode. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3045 [article]

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Extraction of Copper(II) from Sulphate Aqueous Medium with N,N′-bis(2-hydroxy-1-naphthalideneaminoethyl)amine polydentate schiff base in aqueous two-phase micellar of non-Ionic surfactant / H. Reffas in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 6/2009 (11-12/2009)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 6/2009 (11-12/2009) . - p. 361-367 Titre : Extraction of Copper(II) from Sulphate Aqueous Medium with N,N′-bis(2-hydroxy-1-naphthalideneaminoethyl)amine polydentate schiff base in aqueous two-phase micellar of non-Ionic surfactant Type de document : texte imprimé Auteurs : H. Reffas, Auteur ; Hocine Ilikti, Auteur ; M. Hadj Youcef, Auteur ; T. Benabdallah, Auteur Année de publication : 2009 Article en page(s) : p. 361-367 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : Extraction  micellaire  biphasée  aqueuse  Cuivre  Polydentate  Extractant  Surfactant  non-ionique  N,N'-bis  (2-hydroxy-1-naphthalideneaminoethyl)amine Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The present paper outlines the use of the novel polydentate Schiff's base extractant, N,N'-bis(2-hydroxy-1-naphthalideneaminoethyl)amine (H2L), for copper(II) extraction in aqueous two-phase micellar of non-ionic surfactant from sulphate media. The extraction process is based on the formation of the hydrophobic complex of copper(II)-H2L, which is subsequently extracted into the non-ionic surfactant-rich phase of p-octylpolyethyleneglycolphenylether (Triton X-100) at a temperature above the cloud point temperature (CPT). The phase diagrams of the binary system, water-surfactant (Triton X-100), and of the ternary systems, water-surfactant-salt (Na2SO4), were examined. The effects of the main experimental parameters such as pH, extractant concentration and non-ionic surfactant concentration on the extraction process of copper(II) were studied. The extraction yield was found to be significantly depending on the aqueous solution pH. Copper(II) was extracted with H2L and Triton X-100 in the pH range of (3–12). From the equilibrium slope analysis method, it was suggested that the stoichiometry of the extracted complexes have a composition of 1:1 (Cu:H2L). The optimum conditions of the extraction of copper(II) have been established as the following: (1) 2 × 10–3 M extractant; (2) 5 % (m/v) surfactant ; (3) pH of 7.2 ; (4) 7 % (m/v) Na2SO4 and (5) temperature of 65°C. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6811 [article]

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Pronounced catalytic effect of micellar solution of surfactants for regioselective alkylation of 4,5-di- and 3,4,5-triphenylimidazoles-2-thione / N. Rezki in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 47, N° 6/2010 (11-12/2010)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 47, N° 6/2010 (11-12/2010) . - p. 376-380 Titre : Pronounced catalytic effect of micellar solution of surfactants for regioselective alkylation of 4,5-di- and 3,4,5-triphenylimidazoles-2-thione Type de document : texte imprimé Auteurs : N. Rezki, Auteur ; M. Ait Sidhoum, Auteur ; M. R. Aouad, Auteur ; Hocine Ilikti, Auteur ; T. Benabdallah, Auteur Année de publication : 2010 Article en page(s) : p. 376-380 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alkylation Catalyse Eau Micelles Solutions (chimie) Surfactants Thioimidazoles Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : An environmentally benign aqueous alkylation protocol for the regioselective synthesis of thioalkylated imidazoles using cationic, anionic and neutral surfactants has been achieved. The efficiency of the coupling reaction depends strongly on the nature and the concentration of the surfactant. The highest yield (up to 94%) was obtained in the presence of an anionic surfactant, while neutral or cationic surfactants gave poorer results with no change in regioselectivity. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10297 [article]

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