Berlin 2018 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 33: Poster Session III

CPP 33.36: Poster

Dienstag, 13. März 2018, 14:00–16:00, Poster C

Application of the Microfluid Segment Technology for the Preparation of Noble Metal Nanoparticles — •Andrea Knauer and J. Michael Köhler — Technische Universität Ilmenau, FG Physikalische Chemie/Mikroreaktionstechnik, Prof.-Schmidt-Str. 26, 98693 Ilmenau, Deutschland

The microfluid segment technology allows the realization of fast mixing processes and thus a very narrow residence time distribution. This enables optimum preconditions for a fast nanoparticle nucleation and opens up the possibility to generate nanoparticles with highly homogeneous shapes and compositions, narrow particle diameter distributions, and thus pronounced sharp absorption bands in optical spectroscopy. Therefore, a microfluid segment based technique was used for the generation of noble metal nanoparticles. Within this work, microfluidically processed Au/Ag core/shell nanoparticles, triangular silver nanoprisms, silver nanoprisms with a gold shell, or gold nanoframes, and single crystalline gold nanocubes are presented as model systems. By choosing the appropriate reactant ratios, the nanoparticles sizes and thus their optical properties can be tuned with a fine resolution. Depending on size, shape and composition, the spectral position of the absorption maximum can be shifted between 390 and 1000 nm.