ISBN 9783843901536

978-3-8439-0153-6, Reihe Physikalische Chemie

Irene Schlipf
Strukturuntersuchungen an nach dem Sol-Gel-Prozess hergestellten, funktionalisierten Hybridmaterialien und Nanokompositen sowie deren Vorstufen

243 Seiten, Dissertation Universität Stuttgart (2011), Hardcover, B5

Zusammenfassung / Abstract

Hybrid materials are mixtures of different materials on a microscopic level, for instance inorganic or organic systems, in order to create new properties.

The physical, mechanical and especially the chemical properties of these materials are closely linked to the structure. Accordingly the latter has to be known precisely. The knowledge of the arrangement as well as the chemical bonds of the atoms facilitates not only the comprehension but also the optimisation of their properties.

But hybrid materials as well as nanocomposites do not have a spatial regular long range order. For so systems, the measurements of the X-ray absorption fine structure (XAFS) offers a possibility to perform investigations on the local structure.

The concern of this work is the microscopic structure of functionalized hybrid materials, which were produced via the sol-gel process, as well as of their precursors. The ultimate goal was the determination of the atomic short-range order of these structures and the macroscopic properties. The investigations were made by EXAFS / XANES spectroscopy and were completed by Raman spectroscopy as well as X-ray diffraction experiments.