Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Osmotic Delamination : A Forceless Alternative for the Production of Nanosheets Now in Highly Polar and Aprotic Solvents

Title data

Dudko, Volodymr ; Ottermann, Katharina ; Rosenfeldt, Sabine ; Papastavrou, Georg ; Breu, Josef:
Osmotic Delamination : A Forceless Alternative for the Production of Nanosheets Now in Highly Polar and Aprotic Solvents.
In: Langmuir. Vol. 37 (2021) Issue 1 . - pp. 461-468.
ISSN 1520-5827
DOI: https://doi.org/10.1021/acs.langmuir.0c03113

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
SFB 1357 MikroplastikSFB1357

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Repulsive osmotic delamination is thermodynamically allowed “dissolution” of two-dimensional (2D) materials and therefore represents an attractive alternative to liquid-phase exfoliation to obtain strictly monolayered nanosheets with an appreciable aspect ratio with quantitative yield. However, osmotic delamination was so far restricted to aqueous media, severely limiting the range of accessible 2D materials. Alkali-metal intercalation compounds of MoS2 or graphite are excluded because they cannot tolerate even traces of water. We now succeeded in extending osmotic delamination to polar and aprotic organic solvents. Upon complexation of interlayer cations of synthetic hectorite clay by crown ethers, either 15-crown-5 or 18-crown-6, steric pressure is exerted, which helps in reaching the threshold separation required to trigger osmotic delamination based on translational entropy. This way, complete delamination in water-free solvents like aprotic ethylene and propylene carbonate, N-methylformamide, N-methylacetamide, and glycerol carbonate was achieved.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry I > Chair Physical Chemistry I - Univ.-Prof. Dr. Markus Retsch
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Physical Chemistry II > Chair Physical Chemistry II - Univ.-Prof. Dr. Georg Papastavrou
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I > Chair Inorganic Chemistry I - Univ.-Prof. Dr. Josef Breu
Profile Fields > Advanced Fields > Polymer and Colloid Science
Research Institutions
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Research Institutions > Collaborative Research Centers, Research Unit > SFB 1357 - MIKROPLASTIK
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Profile Fields
Profile Fields > Advanced Fields
Research Institutions > Affiliated Institutes
Research Institutions > Collaborative Research Centers, Research Unit
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 19 Jan 2021 08:50
Last Modified: 20 Jan 2021 10:08
URI: https://eref.uni-bayreuth.de/id/eprint/61993