Dresden 2006 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 11: POSTER Disperse Polymer Systems
CPP 11.41: Poster
Dienstag, 28. März 2006, 17:00–19:00, P3
Tailoring the structure of hybrid organic-inorganic tetra and polyfunctional alco-oxo-titanium clusters in polystyrene — •Sondes Trabelsi1,2, Giulia Fornasieri3,4, Laurence Rozes3, Andreas Janke1, Axel Mensch5, Clément Sanchez3, and Manfred Stamm1 — 1Leibniz Institut für Polymerforschung Dresden e.V., Hohe Strasse 6, 01069 Dresden, Germany — 2Forschungszentrum Karlsruhe GmbH, Institute für Synchrotronstrahlung, ANKA, Hermann-von-Helmholtz-Platz 1, 76344 Karlsruhe, Germany — 3Laboratoire de Chimie de la Matière Condensée, UMR CNRS 7574, — 4Laboratoire de Chimie Inorganique, Institut de Chimie Moléculaire et des Matériaux d*Orsay (ICMMO), Bat 420 Université Paris-Sud 11, 91405 Orsay Cedex, France — 5Technische Universität, Dresden, Institut für Werkstoffwissenschaft, Helmholzstraße 7, 01062 Dresden, Germany
Two types of Ti16O16(OEt)32-x(OPhCH=CH2)x cluster have been synthesized with different numbers of styrenic functional groups (i.e. tetra (x = 4) and poly (x = 16)) introduced on the surface of the cluster s core. Investigations combining small angle X-ray scattering (SAXS), transmission electro microscopy (TEM) and energy-filtering transmission electron microscopy (EFTEM) lead to a better understanding about the influence of the functionality s number on the structure of the hybrid nanomaterials. Compared to the tetra functional clusters the poly functional clusters were good dispersed in the hybrid even at very high content between 5 wt% and 10 wt%. Independently of the number of functionalities, three structural levels. The size of the aggregates has been reduced significantly by increasing the number of styrenic reactive groups.