{"id":140533,"date":"2026-01-12T17:55:37","date_gmt":"2026-01-12T17:55:37","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/cristales-liquidos-quirales-diseno-sintesis-y-ferroelectricidad\/"},"modified":"2026-01-12T17:55:37","modified_gmt":"2026-01-12T17:55:37","slug":"cristales-liquidos-quirales-diseno-sintesis-y-ferroelectricidad","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/cristales-liquidos-quirales-diseno-sintesis-y-ferroelectricidad\/","title":{"rendered":"Cristales liquidos quirales: dise\u00f1o, sintesis y ferroelectricidad."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Omenat Val Ana Carmen <\/strong><\/h2>\n<p>El objetivo principal de la tesis es la preparacion de nuevos materiales cristales liquidos, cuya estructura es la de un dimero que lleva un carbono asimetrico en el espaciador flexible que une dos unidades mesogenas, y el estudio de sus propiedades mesogenas y ferroelectricas.Se han sintetizado 7 series diferentes: &#8211; las series i y iv, con espaciador flexible derivado del acido r-(+)-3-metiladipico, presentan en la mayor parte de los compuestos la mesofase smc*, susceptible de presentar ferroelectricidad; esta propiedad se ha confirmado por la deteccion de conmutacion electrooptica. &#8211; Las series ii y iii introducen un mayor momento dipolar en el carbono asimetrico, son compuestos con espaciador derivado del acido s-(-)-2-clorosuccinico (buenos esmectogenos) y del s-(-)-2-cloroglutarico (no mesogenos). &#8211; Las series v y vi, cuyo espaciador flexible es derivado del acido s&#8211;(-)-lactico, presentan como diferencia fundamental la introduccion de dos unidades mesogenas diferentes. &#8211; Los compuestos de la serie v con el espaciador r-2-oxipropanoiloxi (4 atomos) presentan peores propiedades mesogenas que los de la serie vi con espaciador de 8 atomos (mediante la incorporacion del grupo 1,3-propanodioxi. En dos de estos ultimos se han caracterizado unos valores de ps=8.5 y 6.9 nc\/cm2.  &#8211; la serie vii son monomeros para un estudio comparativo con la serie vii.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Cristales liquidos quirales: dise\u00f1o, sintesis y ferroelectricidad.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Cristales liquidos quirales: dise\u00f1o, sintesis y ferroelectricidad. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Omenat Val Ana Carmen <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Zaragoza<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1992<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jos\u00e9 Luis Serrano Ostariz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Benito Alcaide Ala\u00f1on <\/li>\n<li>Carlos Cativiela Mar\u00edn (vocal)<\/li>\n<li>Jos\u00e9 Elguero Bertolini (vocal)<\/li>\n<li>Jes\u00fas Etxebarria Ezenarro (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Omenat Val Ana Carmen El objetivo principal de la tesis es la preparacion de nuevos materiales cristales [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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