Dokumente Fakultät für Chemie (inkl. GAUSS) nach Titel
Anzeige 408-427 von 702
-
Palladium(II)-katalysierte Domino-Reaktionen zur enantioselektiven Synthese von Confluentin, Daurichromen- und Rhododaurichromansäure Untersuchungen zur Synthese von Aglaroxin A
(2011-04-28)This thesis is about Palladium(II) catalysed Domino Reactions for the enantioselective Synthesis of Confluentin, Daurichromenic and Rhododaurichromanic acid. These substances were isolated ... -
Palladium-Catalyzed Oligocyclizations of Some 2-Bromotetradec-1-ene-7,13-diynes Under Heck Reaction Conditions
(2003-12-16)Synthesis of different substituted 2-bromotetradec-1-ene-7,13-diyne precursors can be easily achieved by using 1,7-octadiyne. The cyclization outcome of these precursors depends on the type ... -
Palladium-katalysierte Domino-Reaktionen zum Aufbau bi- und tricyclischer Systeme
(2001-08-30)Domino-processes between palladium-catalyzed cross-coupling reactions - Heck-reaction and Enyne-Cycloisomerization - followed by Diels-Alder-reactions have been studied. The ... -
Palladium-katalysierte Kreuzkupplungen zu 1,2-Dialkenylcycloalkenen: Ausgangsstoffe zur Synthese vielfältiger cyclischer Kohlenstoffgerüste
(2001-10-24)Palladium-catalyzed coupling reactions of 1,2-dibromocycloalkenes with styrene and acrylates afforded 1,6-diphenyl- and 1,6-bisalkoxycarbonyl-substituted (E,Z,E)-1,3,5-hexatrienes ... -
Paramagnetisch markierte Oligonukleotide
(2009-09-11)Two methods to obtain paramagnetically tagged oligonucleotides are described. To get a biomolecule with a paramagnetic center a radical or metal moiety has to be introduced. This was done ... -
Partikelbildung bei der Alkenozonolyse und ihre Kopplung an die Radikalchemie
(2012-08-21)Global warming is one of the most crucial and challenging problems in recent times. However, many aspects of this field are highly fraught with uncertainty, including the new particle formation in the atmosphere. Aside ... -
Pfropfung funktioneller Monomere auf Polymermembranen
(2015-02-18)The grafting of glycidyl methacrylate (GMA) on microporous cellulose membranes using ceriumIV was investigated. The grafted polymer was sulfonated to be used for ion exchange. It was shown that during the grafting of GMA ... -
Phase separation of biomimetic membranes:
(2019-12-11)The bacterium enterohemorrhagic Escherichia coli (EHEC) is one of the main causes of food borne illness. The toxin of this bacteria is shiga toxin (STx) which inhibits the protein biosynthesis of cells. Approaching the ... -
Phospholipidmembranen auf mikroporösen Substraten: in situ Bildung elektrochemischer Gradienten
(2013-07-11)Electrochemical gradients are of utmost importance for cellular processes, such as the generation of action potentials or the production of ATP in mitochondria. They are established by membrane proteins, which consume ... -
Photoaktivierungsfähige Rhodamine als Bio-Calcium-Sensoren und Markierungen für Tetracystein-Tags in Proteinen
(2011-02-25)New xanthenes with differently located azacrown ether residues were conceived and synthesized, and their spectral as well as calcium-binding properties evaluated. Three derivatives with an ... -
Photoakustische Online-Spektroskopie von Schichten im Nanometer-Bereich
(2014-03-28)Metallic coatings in the nanometer range are widely used in industrial applications like optical, semiconductor or metal industry. The amount and thickness of the coating need to be determined for a stable process and ... -
Photodissoziation von Polyhalogenmethanen in Fluiden: Kurzzeitdynamik und Mechanismen
(2008-09-19)This work investigates the molecular mechanisms of photoinduced dynamics and isomerization of polyhalomethanes in fluids by femtosecond pump-probe absorption spectroscopy. For this purpose ... -
Photoinduced electron transfer in dyads and triads with d6 metal complexes and anthraquinone
(2012-07-11)Over the past years, designing molecular systems that mimic natural processes has become the center of much research in the field of chemistry. Many of these artificial systems are synthesized in order to study ... -
Photoionization and vibrational spectroscopy of sodium doped water clusters
(2019-04-15)In this work sodium doped water clusters are studied by means of photoionization reflectron time-of-flight mass spectrometry. Addition of an laser pulse of infrared radiation to the photoionization laser pulse sequence ... -
Photolytischer Käfigeffekt von Dihalomethanen in überkritischen Lösungsmitteln
(2005-12-05)This thesis deals with the effects that a dense environment may have on chemical reactions. For this purpose a seemingly simple reaction was chosen: the photodissociation of diiodomethane ... -
Photon-Echo-Spektroskopie zur Dynamik der Solvatation in Wasser und an Lipidmembran-Wasser-Grenzschichten
(2002-07-02)The thesis focuses on the molecular mechanisms of ultrafast solvation at the interface of synthetic phospholipid-membranes. For the first time, photon-echo spectroscopy is used as a tool ... -
Plasmagestützte Syntheseverfahren zur Erzeugung von Parylene-Metall-Multilayersystemen
(2023-10-27)This dissertation comprises the investigation of new synthesis possibilities of Parylene-metal multilayer systems with all process steps united in a single Parylene coating device. For this purpose, the metal layer component ... -
Polybutadien und Butadien enthaltende Copolymere mit gezielt eingebauten vulkanisierbaren Gruppen durch RAFT-Polymerisation
(2014-04-29)Reversible Addition Fragmentation Chain Transfer (RAFT) polymerisation is a radical polymerisation based on the principle of degenerative chain transfer. Polymers produced by this method feature a narrow polydispersity and ...