Now showing items 71-90 of 143
Vicens Serra, Laia (Date of defense: 2023-07-18)
Most of the organic molecules used in chemical industry (and their synthetic precursors) contain oxygen atoms in their structure. One of the most convenient methods for the preparation of oxygenated compounds is the ...
Carreras Ferrer, Irene (Date of defense: 2005-04-14)
Los fenómenos oxidativos y en particular la oxidación lipídica son uno de los principales responsables de la pérdida de calidad en la carne y en los productos cárnicos. Como consecuencia de estos procesos se generan ...
Poater i Teixidor, Jordi (Date of defense: 2003-04-28)
La present tesi doctoral s'emmarca dins el camp de la química teòrica i<br/>computacional. El primer objectiu, que va ser el de partida, consistia a veure si els índexos<br/>bielectrònics derivats de la teoria AIM podien ...
Camó Marín, Cristina (Date of defense: 2019-06-27)
Plant diseases produced by bacteria are responsible for considerable economic losses. These phytopathologies are highly contagious and difficult to control. With this aim, we selected peptides reported as plant defense ...
Pla i Quintana, Anna (Date of defense: 2004-11-23)
La present tesi doctoral s'ha basat en la caracterització estructural i en l'estudi de les propietats catalítiques de nous complexos de pal·ladi(0) amb lligands olefínics contenint unitats de ferrocè. En una primera fase ...
Arbusé Font, Arnau (Date of defense: 2020-11-12)
Macrocyclic ligands and its complexes have been studied in a wide variety of fields, among them bioinorganic chemistry. In this work it is reported three studies of macrocyclic species under three points of view. Firstly, ...
Garcia Bosch, Isaac (Date of defense: 2011-12-20)
Enzymes are high-weight molecules which catalyze most of the metabolic processes in living organisms. Very often, these proteins contain one or more 1st row transition metal ions in their active center (Fe, Cu, Co, Mn, Zn, ...
Brun Massó, Sandra (Date of defense: 2012-04-27)
Carbon-carbon bond formation reactions catalyzed by transition metals represent one of the most versatile and efficient strategies in organic synthesis. The catalytic transformations contribute to the development of ...
Font Molins, Marc (Date of defense: 2015-02-13)
Aryl-Cu(III) species have been often implicated as the intermediate species that operate Ullmann-type couplings. However, such species have long remained elusive and the fundamental pathways that govern Ullmann-type ...
Ruiz-Barragán, Sergi (Date of defense: 2014-09-19)
Conical Intersections (CI) are points in Potential Energy Surfaces (PES) of two or more states that have the same energy. They are fundamental to understand photo-chemical processes. These points are not isolated points, ...
Soler i Parpal, Jordi (Date of defense: 2023-09-19)
Enzymes are a type of proteins that help chemical reactions happen faster in living organisms. Scientists have been able to modify these enzymes using a technique called protein engineering, which allowed to increase the ...
Torres Antón, Òscar (Date of defense: 2017-02-24)
Some of the most powerful methods for synthesizing complex organic molecules with high levels of chemo-, diastereo- and enantioselectivity rely on metal carbene chemistry. These compounds are versatile reaction intermediates ...
Rich Masallera, Jordi (Date of defense: 2012-06-08)
The catalytic asymmetric oxidation of alkenes has special interest from both industrial and academic points of view. For this reason, catalysts able to perform these reactions in a faster and more effective manner have ...
Sens Llorca, Cristina (Date of defense: 2005-03-17)
Se han sintetizado dos nuevos complejos mononucleares de Ru, con formula [RuCl2(Hbpp)(dmso)2], a partir de la reacción entre [RuCl2(dmso)4] y Hbpp (3,5-bis(2-piridil)pirazola). El hecho que sólo tres de los seis posibles ...
Sala Román, Xavier (Date of defense: 2007-03-16)
Síntesi de nous complexos de Ruteni amb lligands no quirals que tenen per fórmula [Ru(phen)([9]aneS3)X] (on X = H2O, py i MeCN). Caracterització espectroscòpica electroquímica i estructural d'aquesta família de complexos. ...
Masllorens i Llinàs, Judit (Date of defense: 2006-02-10)
Aquesta Tesi Doctoral està dividida en diferents capítols tots ells basats en aplicacions de macrocicles nitrogenats triolefínics de 15 membres i dels seus complexos amb metalls de transició. En primer lloc es descriu ...
Mola i Marín, Joaquim (Date of defense: 2008-06-27)
La Tesi descriu de manera completa una sèrie de complexos de ruteni amb lligands polipiridílics i lligands auxiliars de tipus fosfina, dmso, nitril o aquo. Es descriuen estudis d'isomerització (cis/trans o coordinació ...
Vieta i Corcoy, Pep Anton (Date of defense: 2017-02-07)
Throughout this thesis I was involved in different science communication projects where research and innovation have been applied to improve existing proposals and exploring new formats without forget the evaluation of the ...
Turull López, Marta (Date of defense: 2019-07-19)
This thesis is focused on the use of the Diffusive Gradient in thin film (DGT) technique for the analysis of bioavailable mercury and other trace metals in water and soil. Homemade DGT devices using a selective ion-exchange ...
Nadal i Soy, Josep (Date of defense: 2002-12-10)
Els polímers són una sèrie de compostos que troben un ampli ventall d'aplicacions en la indústria actual. Un exemple són les espumes de poliuretà, estructures de tipus cel·lular obtingudes mitjançant la reacció química ...