Spectroscopic investigation of nitrate-metal and metal-surfactant interactions in the solid AgNO3/C12EO10 and liquid-crystalline [M(H2O)n](NO3)2/C12EO10 systems

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dc.citation.epage3676en_US
dc.citation.issueNumber9en_US
dc.citation.spage3671en_US
dc.citation.volumeNumber19en_US
dc.contributor.authorDag, Ö.en_US
dc.contributor.authorSamarskaya, O.en_US
dc.contributor.authorTura, C.en_US
dc.contributor.authorGünay, A.en_US
dc.contributor.authorÇelik, Ö.en_US
dc.date.accessioned2016-02-08T10:30:15Z
dc.date.available2016-02-08T10:30:15Z
dc.date.issued2003en_US
dc.departmentDepartment of Chemistryen_US
dc.description.abstractInteractions of the nitrate ions in various metal nitrate salts with CnH2n-1(CH2CH2O)mOH (CnEOm)-type nonionic surfactants have been investigated both in the solid and in the liquid-crystalline (LC) systems. In the ternary system, the mixture of salt/water/CnEOm has a mesophase up to a certain concentration of salt, and the nitrate ions in this phase are usually in a free-ion form. However, upon the evaporation of the water phase, the nitrate ion interacts with the metal center and coordinates as either a bidentate or unidentate ligand. It is this interaction that makes the AgNO3 ternary system undergo a phase separation by releasing solid Ag(CnEOm)xNO3 complex crystals. In contrast, the salt/surfactant systems maintain their stable LC phases for months. Note also that the salt/surfactant systems consist of transition-metal aqua complexes in which the coordinated water molecules play a significant role in the self-assembly and organization of the nonionic surfactant molecules into an LC mesophase. Throughout this work, Fourier transform infrared spectroscopy has been extensively used to investigate the interactions of the nitrate ions with a metal center and the metal ions with the surfactant molecules. Polarized optical microscopy and X-ray diffraction techniques have been applied to investigate the nature of the crystalline and LC phases.en_US
dc.identifier.doi10.1021/la020740gen_US
dc.identifier.issn0743-7463
dc.identifier.urihttp://hdl.handle.net/11693/24497
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/la020740gen_US
dc.source.titleLangmuiren_US
dc.subjectMetal - surfactant interactionsen_US
dc.subjectLiquid crystal polymersen_US
dc.subjectMicellesen_US
dc.subjectOptical microscopyen_US
dc.subjectPhase separationen_US
dc.subjectSpectroscopic analysisen_US
dc.subjectTernary systemsen_US
dc.subjectX ray diffraction analysisen_US
dc.subjectSurface chemistryen_US
dc.titleSpectroscopic investigation of nitrate-metal and metal-surfactant interactions in the solid AgNO3/C12EO10 and liquid-crystalline [M(H2O)n](NO3)2/C12EO10 systemsen_US
dc.typeArticleen_US
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Spectroscopic Investigation of Nitrate−Metal and Metal−Surfactant Interactions in the Solid AgNO3-C12EO10 and Liquid-Crystalline [M(H2O)n](NO3)2-C12EO10 Systems.pdf
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