{"id":63147,"date":"2018-03-09T22:51:06","date_gmt":"2018-03-09T22:51:06","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/semiconductores-organicos-basados-en-oligotiofenos-tetracianosustituidos-estudio-espectroscopico-electroquimico-y-teorico\/"},"modified":"2018-03-09T22:51:06","modified_gmt":"2018-03-09T22:51:06","slug":"semiconductores-organicos-basados-en-oligotiofenos-tetracianosustituidos-estudio-espectroscopico-electroquimico-y-teorico","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/espectroscopia-molecular-en-quimica-fisica\/semiconductores-organicos-basados-en-oligotiofenos-tetracianosustituidos-estudio-espectroscopico-electroquimico-y-teorico\/","title":{"rendered":"Semiconductores organicos basados en oligotiofenos tetracianosustituidos: estudio espectroscopico, electroquimico y teorico"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Rocio Ponce Ortiz <\/strong><\/h2>\n<p>Esta tesis ha permitido racionalizar las bases quim\u00edco-f\u00edsicas que gobiernan y determinan las estructuras moleculares y electr\u00f3nica de oligotiofenos tetracianosustituidos mediante el an\u00e1lisis de la beta-tetracianosustituci\u00f3n (oligotiofenos quinoides) y de la \u00edY-tetracianosustituci\u00f3n. Se ha analizado tambi\u00e9n el efecto de la sustituci\u00f3n lateral con grupos electroactivos y la oxidaci\u00f3n del azufre en oligotiofenos quinoides. La metodolog\u00eda empleada ha consistido en m\u00e9todos espectrosc\u00f3picos (uv-vis-nir, raman, ir y epr), t\u00e9cnicas electroqu\u00edmicas y c\u00e1lculos te\u00f3ricos dft. como hip\u00f3tesis inicial se ha considerado que el estado fundamental de los oligotiofenos quinoides de cadena larga est\u00e1 descrito por dos formas resonantes, una de capa cerrada o quinoide y otra de capa abierta o birradicalaria. Este estado fundamental se encuentra en equilibrio t\u00e9rmico con un estado triplete bajo en energ\u00eda. uno de los resultados m\u00e1s relevantes de esta tesis ha sido la presentaci\u00f3n de la espectroscop\u00eda raman como una t\u00e9cnica nueva en la caracterizaci\u00f3n de birradicales org\u00e1nicos. mediante la \u00edY-tetracianosustituci\u00f3n (conjugaci\u00f3n cruzada) se ha conseguido un semiconductor ambipolar que a su vez presenta rendimientos cu\u00e1nticos de fluorescencia mejorados con respecto a los oligotiofenos quinoides. Estos resultados indican que la conjugaci\u00f3n cruzada puede ser una buena alternativa para fabricar transistores emisores de luz de base org\u00e1nica (olets).<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Semiconductores organicos basados en oligotiofenos tetracianosustituidos: estudio espectroscopico, electroquimico y teorico<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Semiconductores organicos basados en oligotiofenos tetracianosustituidos: estudio espectroscopico, electroquimico y teorico <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Rocio Ponce Ortiz <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 M\u00e1laga<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 27\/02\/2008<\/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>Juan  Teodomiro Lopez Navarrete<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: rafael Suau suarez <\/li>\n<li>concepci\u00f3 Rovira angulo (vocal)<\/li>\n<li>agusti Lledos falco (vocal)<\/li>\n<li>gianni Zotti (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Rocio Ponce Ortiz Esta tesis ha permitido racionalizar las bases quim\u00edco-f\u00edsicas que gobiernan y determinan las estructuras [&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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