One-pot synthesis of micron partly hollow anisotropic dumbbell shaped silica core-shell particles

Johannes Maisch; Farhad Jafarli; Thomas Chassé; Felix Blendinger; Alexander Konrad; Michael Metzger; Alfred J Meixner; Marc Brecht; L Dähne; Hermann A Mayer

doi:10.1039/c6cc07372g

One-pot synthesis of micron partly hollow anisotropic dumbbell shaped silica core-shell particles

Chem Commun (Camb). 2016 Dec 13;52(100):14392-14395. doi: 10.1039/c6cc07372g.

Authors

Affiliations

¹ Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany. hermann.mayer@uni-tuebingen.de.
² Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
³ Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany and Institute for Applied Research, Faculty for Mechanical and Medical Engineering, University of Furtwangen, Villingen-Schwenningen, Germany.
⁴ Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany and Process Analysis and Technology (PA&T), Reutlingen Research Institute, Reutlingen University, Alteburgstrasse 150, 72762 Reutlingen, Germany.
⁵ Surflay Nanotec GmbH, Max-Planck-Str. 3, 12489 Berlin, Germany.

PMID: 27892555
DOI: 10.1039/c6cc07372g

Abstract

A facile method is described to prepare micron partly hollow dumbbell silica particles in a single step. The obtained particles consist of a large dense part and a small hollow lobe. The spherical dense core as well as the hollow lobe are covered by mesoporous channels. In the case of the smaller lobe these channels are responsible for the permeability of the shell which was demonstrated by confocal imaging and spectroscopy.