Abstract
Publisher Summary This chapter reviews the tailored generation of titanium (Ti) oxide species within porous Si-MCM-41. The generation of titanium oxide species of tailored and uniform size into Si-MCM-41 as host material does not only depend on the amount of titanium compounds added in one step but also on the repeated addition and hydrolysis of the titanium compound in consecutive steps. Anatase nanoparticles of a well-defined size of up to 3 nm, Ti (IV) oxide oligomers and mononuclear Ti (IV) oxide species, respectively, are generated without a substantial enrichment of titanium oxide particles on the extemal surface of the Si-MCM-41 host. Depending on the size and content of the Ti (IV) oxide species, the fluorescence of co-impregnated dye molecules is statically quenched to varying extent.
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