title: Controlled Exfoliation of Layered Silicate Heterostructures into Bilayers and Their Conversion into Giant Janus Platelets.
abstract: Ordered heterostructures of layered materials where interlayers with different reactivities strictly alternate in stacks offer predetermined slippage planes that provide a precise route for the preparation of bilayer materials. We use this route for the synthesis of a novel type of reinforced layered silicate bilayer that is 15 % stiffer than the corresponding monolayer. Furthermore, we will demonstrate that triggering cleavage of bilayers by osmotic swelling gives access to a generic toolbox for an asymmetrical modification of the two vis-à-vis standing basal planes of monolayers. Only two simple steps applying arbitrary commercial polycations are needed to obtain such Janus-type monolayers. The generic synthesis route will be applicable to many other layered compounds capable of osmotic swelling, rendering this approach interesting for a variety of materials and applications.
authors.affiliation: Lehrstuhl für Anorganische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Matthias
authors.initials: M
authors.lastname: Stöter
authors.affiliation: Lehrstuhl für Physikalische Chemie II, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Gödrich
authors.affiliation: Lehrstuhl für Anorganische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Patrick
authors.initials: P
authors.lastname: Feicht
authors.affiliation: Lehrstuhl für Physikalische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Sabine
authors.initials: S
authors.lastname: Rosenfeldt
authors.affiliation: Computing Center, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Herbert
authors.initials: H
authors.lastname: Thurn
authors.affiliation: Institute for Physical Chemistry and Polymer Physics, Leibniz-Institut für Polymerforschung Dresden e.V., 01069, Dresden, Germany.
authors.forename: Jens W
authors.initials: JW
authors.lastname: Neubauer
authors.affiliation: Institute for Physical Chemistry and Polymer Physics, Leibniz-Institut für Polymerforschung Dresden e.V., 01069, Dresden, Germany.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Seuss
authors.affiliation: Institut Laue-Langevin, DS LSS, 38042, Grenoble 9, France.
authors.forename: Peter
authors.initials: P
authors.lastname: Lindner
authors.affiliation: Lehrstuhl für Anorganische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Hussein
authors.initials: H
authors.lastname: Kalo
authors.affiliation: Lehrstuhl für Anorganische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Möller
authors.affiliation: Institute for Physical Chemistry and Polymer Physics, Leibniz-Institut für Polymerforschung Dresden e.V., 01069, Dresden, Germany.|Chair of Physical Chemistry of Polymeric Materials, Technical University Dresden, 01069, Dresden, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Fery
authors.affiliation: Lehrstuhl für Physikalische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Förster
authors.affiliation: Lehrstuhl für Physikalische Chemie II, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany. georg.papastavrou@uni-bayreuth.de.
authors.forename: Georg
authors.initials: G
authors.lastname: Papastavrou
authors.affiliation: Lehrstuhl für Anorganische Chemie I, University of Bayreuth, Universitätsstrasse 30, 95440, Bayreuth, Germany. Josef.Breu@uni-bayreuth.de.
authors.forename: Josef
authors.initials: J
authors.lastname: Breu
keywords: atomic force microscopy; hybrid materials; nanomaterials; silicate; thin layers