Univ., Diss.--Kiel, 2005. / Zusfassung in engl. Sprache.

Duisburg, Essen, Universiẗat, Diss., 2004.

Zugl.: Stuttgart, Univ., Diss., 2009

Univ., Diss., 2009--Würzburg.

Das Photodissoziationsverhalten der Pyrimidinbasen Thymin, Uracil und 5-Methylcytosin wurde mittels Photofragment-Dopplerspektroskopie und Photofragment-Imaging untersucht. Die Photodissoziation erfolgt in allen Fällen in einem statistischen Prozess nach Mehrphotonenabsorption. Von Purin wurde ebenfalls die Photodissoziation untersucht sowie das elektronische Spektrum des niedrigsten n-pi*-Zustands mittels Photofragment-Anregungsspektroskopie und [1+1']-REMPI-Spektroskopie gemessen. Purin zeigt bei den untersuchten Wellenlängen dasselbe Verhalten wie die Pyrimidinbasen. Das Elektronische Spektrum von Purin zeigt über einen Bereich von über 2000 cm^-1 vom Bandenursprung gut strukturierte Banden, von denen die meisten oberhalb 850 cm^-1 als Kombinationsbanden identifiziert wurden. / The photodissociation behaviour of the pyrimidine bases thymine, uracil and 5-methyl cytosine has been studied by photofragment doppler spectroscopy and photofragment imaging. In all cases, the photodissociation follows a statistical process after multiphoton absorption. The photodissociation of purine has also been studied and the spectrum of its lowest excited n-pi* state has been measured by photofragment excitation spectroscopy and [1+1']-REMPI spectroscopy. At the used wavelengths, purine shows the same photodissociation behaviour as the pyrimidine bases. The electronic spectrum of purine shows well structured peaks in a range of 2000 cm^-1 from the band origin. Most bands above 850 cm^-1 can be identified as combination bands.

Univ., Diss.--Erlangen, 2004.

Regensburg, Univ., Diss., 2008

Techn. Universiẗat, Diss., 2004--Darmstadt.

Compared to the numerous X-ray crystal structures of protein-carbohydrate complexes, the successful elucidation of the crystal structures of complexes between artificial receptors and carbohydrates has been very rarely reported in the literature. In this work, we describe the binding modes of two complexes formed between methyl α-D-glucopyranoside and an artificial receptor belonging to the class of compounds consisting of a 1,3,5-trisubstituted 2,4,6-trialkylbenzene scaffold. It is particularly noteworthy that these two complexes are present in one crystal structure, as was observed by us for the first time in the case of the recently reported three crystal structures of the complexes with methyl β-D-glucopyranoside, each containing two different receptor–carbohydrate complexes. The noncovalent interactions stabilizing the new complexes are compared with those observed in the aforementioned crystalline complexes with methyl β-D-glucopyranoside.