{"id":87611,"date":"2018-03-10T00:12:25","date_gmt":"2018-03-10T00:12:25","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/homoassocacio-de-pigments-pirrolics-porfirines-substtvides-en-meso-per-grups-4-sulfonatofenil-o-fenil\/"},"modified":"2018-03-10T00:12:25","modified_gmt":"2018-03-10T00:12:25","slug":"homoassocacio-de-pigments-pirrolics-porfirines-substtvides-en-meso-per-grups-4-sulfonatofenil-o-fenil","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/homoassocacio-de-pigments-pirrolics-porfirines-substtvides-en-meso-per-grups-4-sulfonatofenil-o-fenil\/","title":{"rendered":"Homoassocaci\u00f3 de pigments pirr\u00f3lics: porfirines substtvides en meso per grups 4-sulfonatofenil o fenil"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Raimon Rubires Ferrer <\/strong><\/h2>\n<p>Se ha estudiado la homoasociaci\u00f3n de pigmentos tetrapirr\u00f3licos derivados de la mbv-xiiialfa y la mbr-xiiialfa con y sin restricci\u00f3n conformacional en c10 por diversas t\u00e9cnicas (osmometria de presi\u00f3n de vapor, dc y uv-vis) concluyendo que en soluciones clorof\u00f3rmicas los derivados de la mbr-xiiialfa (con y sin restricci\u00f3n) forman d\u00edmeros estabilizados por interacciones p entre anillos pirr\u00f3licos de unidades diferentes  de mbr-xiiialfa.  adem\u00e1s, se ha estudiado la homoasociaci\u00f3n en medio acuoso \u00e1cido y neutro de la s\u00e9rie de las meso-4-sulfonatofenil porfirinas caracterizando a trav\u00e9s de v\u00e1rias t\u00e9cnicas (uv-vis, fluorescencia, polarizaci\u00f3n de la emisi\u00f3n y dispersi\u00f3n a 90\u00c2\u00bac) sus homoasociados. As\u00ed, se ha observado que las porfirinas tpps4, tpp3, tpps2a y dpps20 forman a pesar de su diferente sustituci\u00f3n apilamientos mientras que las porfirinas tpps20 y tpps1 forman homoasociados de tipo j. La caracter\u00edstica estructural com\u00fan de \u00e9stas dos \u00faltimas porfirinas es la exist\u00e9ncia de grupos fenilo no sulfonados opuestos (grupos directores). estos grupos estabilizan la formaci\u00f3n de los j homoasociados por interacci\u00f3n hidrof\u00f3bica entre fenilos no sulfonados. En medio \u00e1cido todas las porfirinas de la s\u00e9rie forman j-homoasociados de estructura similar pero no id\u00e9ntica. se muestran diversas estructuras para los j-homoasociados.  por otra parte, se han estudiado las propiedades el\u00e9ctricas (frente a la corriente cont\u00ednua y la correiente alterna) de la fase condensada de la h2tpps4. \u00e9sta fase condensada ha sido obtenida por evaporaci\u00f3n de soluciones concentradas de dicha porfirina y caracteriza por an\u00e1lisis de ondas ac\u00fasticas y ir.  finalmente, se ha demostrado estad\u00edsticamente (para el caso de la h2tpps3) que en el proceso de ruptura espont\u00e1nea de simetr\u00eda que presentan todas las soluciones \u00e1cidas de las porfirinas estudiadas la agitaci\u00f3n en sentidos opuestos (v\u00f3rtexs de agitaci\u00f3n opuestos) genera se\u00f1ales de dc<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Homoassocaci\u00f3 de pigments pirr\u00f3lics: porfirines substtvides en meso per grups 4-sulfonatofenil o fenil<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Homoassocaci\u00f3 de pigments pirr\u00f3lics: porfirines substtvides en meso per grups 4-sulfonatofenil o fenil <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Raimon Rubires Ferrer <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 30\/11\/2000<\/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>Josep Mar\u00eda Ribo Trujillo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Miguel \u00e1ngel Peric\u00ed\u00a0s brondo <\/li>\n<li>joaqu\u00edn Crusats aliguer (vocal)<\/li>\n<li>Carlos M\u00ed\u00bcller jevenois (vocal)<\/li>\n<li>pedro Cintas moreno (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Raimon Rubires Ferrer Se ha estudiado la homoasociaci\u00f3n de pigmentos tetrapirr\u00f3licos derivados de la mbv-xiiialfa y la [&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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