Properties of the uniaxial and biaxial nematic phases of the dodecyltrimethylammonium bromide/1-dodecanol/water lyotropic mixture including azo dye and drug molecules

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dc.authorid0000-0002-9854-5177en_US
dc.authorid0000-0002-2422-2260en_US
dc.authorid0000-0002-6339-8699en_US
dc.contributor.authorAkpınar, Erol
dc.contributor.authorTabak, Merve
dc.contributor.authorReis, Dennys
dc.contributor.authorNeto, Antonio Martins Figueiredo
dc.date.accessioned2024-07-05T06:53:44Z
dc.date.available2024-07-05T06:53:44Z
dc.date.issued2024en_US
dc.departmentBAİBÜ, Fen Edebiyat Fakültesi, Kimya Bölümüen_US
dc.descriptionThis work was supported by Bolu Abant Izzet Baysal University Directorate of Research Projects: [Grant Number 2022.03.03.1555]; The National Council for Scientific and Technological Development (CNPq): [Grant Number 465259/2014-6]; The Sao Paulo Research Foundation (FAPESP: [Grant Number 2014/50983-3; 2016/24531-3]; The Scientific and Technological Research Council of Turkey (TUEB & Idot;TAK): [Grant Number 120Z721].en_US
dc.description.abstractLyotropic nematic phase properties of novel mixtures of dodecyltrimethylammonium bromide (DTMABr)/1-dodecanol (DDeOH)/water, doping with anionic azo dyes (amaranth and tartrazine) and a drug molecule disodium cromoglycate (cromolyn, DSCG), were investigated. The textures of the uniaxial and biaxial nematic phases were observed by polarizing optical microscopy (POM). Uniaxial-to-biaxial nematic phase transitions were determined from the temperature dependence of the birefringences via laser conoscopy. Partial phase diagrams of the mixtures were constructed as a function of concentrations of dyes and drug molecules by combining the POM and laser conoscopy results. Small-angle X-ray scattering (SAXS) was performed to evaluate micellar structure parameters. The results indicate that those dyes and drug molecules have a greater effect on (a) the nematic-nematic phase transition temperatures, (b) the biaxial-nematic phase-domain range in the partial phase diagrams, and (c) micelle-shape anisotropy, comparing to the addition of other conventional inorganic electrolyte ions. Furthermore, dye and drug molecules may be sequenced in the Hofmeister series of ions, considering the number of ionic groups in their molecular structures and also the chaotropic and/or kosmotropic degrees of the ionic groups. Since these molecules may have a resonance structure (e.g. DSCG), as a result of the existence of the aromatic parts in their structures, this resonance structure should be considered to investigate their effects on the stabilization of the lyotropic nematic phases.en_US
dc.description.sponsorshipBolu Abant Izzet Baysal University Directorate of Research Projects [2022.03.03.1555]; National Council for Scientific and Technological Development (CNPq) [465259/2014-6]; Sao Paulo Research Foundation (FAPESP) [2014/50983-3, 2016/24531-3]; Scientific and Technological Research Council of Turkey (TUEBIdot;TAK) [120Z721]en_US
dc.identifier.citationAkpinar, E., Tabak, M., Reis, D., & Figueiredo Neto, A. M. (2024). Properties of the uniaxial and biaxial nematic phases of the dodecyltrimethylammonium bromide/1-dodecanol/water lyotropic mixture including azo dye and drug molecules. Phase Transitions, 97(1-2), 66-86.en_US
dc.identifier.doi10.1080/01411594.2023.2284162
dc.identifier.endpage86en_US
dc.identifier.issn0141-1594
dc.identifier.issn1029-0338
dc.identifier.issue1-2en_US
dc.identifier.scopus2-s2.0-85181194043en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage66en_US
dc.identifier.urihttp://dx.doi.org/10.1080/01411594.2023.2284162
dc.identifier.urihttps://hdl.handle.net/20.500.12491/12240
dc.identifier.volume97en_US
dc.identifier.wosWOS:001133807400001en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAkpınar, Erol
dc.institutionauthorTabak, Merve
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofPhase Transitionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.relation.tubitak120Z721
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLyotropic Nematic Phasesen_US
dc.subjectBiaxial Phaseen_US
dc.subjectNematic-Nematic Phase Transitionsen_US
dc.subjectCarbon Nanotubesen_US
dc.subjectTransitionsen_US
dc.subjectIonsen_US
dc.titleProperties of the uniaxial and biaxial nematic phases of the dodecyltrimethylammonium bromide/1-dodecanol/water lyotropic mixture including azo dye and drug moleculesen_US
dc.typeArticleen_US

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