ZnO superstructures via oriented aggregation initiated in a block copolymer melt

Klaumünzer M, Distaso M, Hübner J, Mackovic M, Spiecker E, Kryschi C, Peukert W (2014)

Publication Type: Journal article, Original article

Publication year: 2014

Journal

CrystEngComm Royal Society of Chemistry

Original Authors: Klaumünzer M., Distaso M., Hübner J., Mackovic M., Spiecker E., Kryschi C., Peukert W.

Publisher: Royal Society of Chemistry

Book Volume: 16

Pages Range: 1502-1513

Journal Issue: 8

DOI: 10.1039/c3ce41868e

Abstract

A fast and simple one pot synthesis of ZnO nano- and microparticles initiated and driven by an amino block copolymer O,O′-bis(2-aminopropyl) polypropylene glycol-block-polyethylene glycol-block-polypropylene glycol (Jeffamine®) is reported. The specific building mechanism of ZnO mesocrystals is investigated in detail using electron microscopy and diffraction methods. Mesocrystals with a complex superstructure are formed as a result of a consecutive and oriented multiple stage aggregation process: first a 0D → 1D aggregation process is observed, then a 1D → 3D aggregation process occurs in which secondary particles form cones and multiple cone symmetries. Dots, rods, cones, and multiple cones have been isolated within a time resolved study which clearly supports the growth model. To control the morphology of the product particles, the influence of relevant synthesis parameters including stirring and sonication of the intermediate were investigated. Extensive surface characterization of the resulting mesocrystals is presented using infrared and photoluminescence spectroscopies as well as thermogravimetric analysis. Even after multiple washing steps, the particles exhibit a Jeffamine® coated surface that allows for easy dispersion in both polar and nonpolar solvents. The obtained mesocrystals efficiently scatter in the whole range of visible light. © 2014 The Royal Society of Chemistry.

Authors with CRIS profile

Martin Klaumünzer Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Monica Distaso Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Jakob Hübner Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik Mirza Mackovic Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Erdmann Spiecker Lehrstuhl für Werkstoffwissenschaften (Mikro- und Nanostrukturforschung) Carola Kryschi Professur für Physikalische Chemie Wolfgang Peukert Lehrstuhl für Feststoff- und Grenzflächenverfahrenstechnik

Additional Organisation(s)

Graduiertenkolleg 1896/2 In situ Mikroskopie mit Elektronen, Röntgenstrahlen und Rastersonden Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Exzellenz-Cluster Engineering of Advanced Materials Interdisziplinäres Zentrum, Center for Nanoanalysis and Electron Microscopy (CENEM)

How to cite

APA:

Klaumünzer, M., Distaso, M., Hübner, J., Mackovic, M., Spiecker, E., Kryschi, C., & Peukert, W. (2014). ZnO superstructures via oriented aggregation initiated in a block copolymer melt. CrystEngComm, 16(8), 1502-1513. https://doi.org/10.1039/c3ce41868e

MLA:

Klaumünzer, Martin, et al. "ZnO superstructures via oriented aggregation initiated in a block copolymer melt." CrystEngComm 16.8 (2014): 1502-1513.

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