Unraveling Complexity: A Strategy for the Characterization of Anisotropic Core Multishell Nanoparticles

Lin W, Greve C, Härtner S, Götz K, Walter J, Wu M, Rechberger S, Spiecker E, Busch S, Schmutzler T, Avadhut Y, Hartmann M, Unruh T, Peukert W, Segets D (2020)

Publication Language: English

Publication Type: Journal article

Publication year: 2020

Journal

Particle & Particle Systems Characterization Wiley

DOI: 10.1002/ppsc.202000145

Abstract

In this work, a widely applicable routine to characterize the core, surface, stability, and optical properties of CdSe/CdS/ZnS core–shell–shell nanorods after multiple growth steps is established. First, size, shape, and shell thickness of the nanorods are characterized by transmission electron microscopy (TEM), analytical ultracentrifugation (AUC), and small angle X-ray/neutron scattering (SAXS/SANS). In the next step, Fourier-transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), and SANS measurements are applied to determine the surface species of nanorods. Then, the colloidal stability of the nanorods is investigated by UV–vis spectroscopy and dynamic light scattering (DLS) after different washing cycles. Finally, photoluminescence quantum yield (PLQY) of the nanorods during washing and sample storage is determined. With this highly complementary routine for particle characterization, the core, surface, stability, and optical properties of nanorods after multiple growth steps are resolved. The results demonstrate the importance of the developed toolbox to characterize such highly complex, anisotropic nanorods for a technical environment. This is of major importance for the handling of colloidal quantum materials and their quality control in industrial applications.

Authors with CRIS profile

Wei Lin Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Klaus Götz Lehrstuhl für Kristallographie und Strukturphysik Johannes Walter Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Mingjian Wu Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Stefanie Rechberger Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Tilo Schmutzler Professur für Nanomaterialcharakterisierung (Streumethoden) Yamini Avadhut Interdisziplinäres Zentrum Erlangen Catalysis Resource Center (ECRC) Martin Hartmann Professur für Katalyse Tobias Unruh Professur für Nanomaterialcharakterisierung (Streumethoden) Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

Additional Organisation(s)

Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

Involved external institutions

Merck KGaA DE Germany (DE) Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH (HZG) DE Germany (DE) Universität Duisburg-Essen (UDE) DE Germany (DE)

How to cite

APA:

Lin, W., Greve, C., Härtner, S., Götz, K., Walter, J., Wu, M.,... Segets, D. (2020). Unraveling Complexity: A Strategy for the Characterization of Anisotropic Core Multishell Nanoparticles. Particle & Particle Systems Characterization. https://dx.doi.org/10.1002/ppsc.202000145

MLA:

Lin, Wei, et al. "Unraveling Complexity: A Strategy for the Characterization of Anisotropic Core Multishell Nanoparticles." Particle & Particle Systems Characterization (2020).

BibTeX: Download