Cargando…

Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks

[Image: see text] Here, we develop a framework for assembly, understanding, and application of functional emulsions stabilized by few-layer pristine two-dimensional (2D) nanosheets. Liquid-exfoliated graphene and MoS(2) are demonstrated to stabilize emulsions at ultralow nanosheet volume fractions,...

Descripción completa

Detalles Bibliográficos
Autores principales: Ogilvie, Sean P., Large, Matthew J., O’Mara, Marcus A., Sehnal, Anne C., Amorim Graf, Aline, Lynch, Peter J., Cass, Adam J., Salvage, Jonathan P., Alfonso, Marco, Poulin, Philippe, King, Alice A. K., Dalton, Alan B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9007533/
https://www.ncbi.nlm.nih.gov/pubmed/35107970
http://dx.doi.org/10.1021/acsnano.1c06519
_version_ 1784686870908633088
author Ogilvie, Sean P.
Large, Matthew J.
O’Mara, Marcus A.
Sehnal, Anne C.
Amorim Graf, Aline
Lynch, Peter J.
Cass, Adam J.
Salvage, Jonathan P.
Alfonso, Marco
Poulin, Philippe
King, Alice A. K.
Dalton, Alan B.
author_facet Ogilvie, Sean P.
Large, Matthew J.
O’Mara, Marcus A.
Sehnal, Anne C.
Amorim Graf, Aline
Lynch, Peter J.
Cass, Adam J.
Salvage, Jonathan P.
Alfonso, Marco
Poulin, Philippe
King, Alice A. K.
Dalton, Alan B.
author_sort Ogilvie, Sean P.
collection PubMed
description [Image: see text] Here, we develop a framework for assembly, understanding, and application of functional emulsions stabilized by few-layer pristine two-dimensional (2D) nanosheets. Liquid-exfoliated graphene and MoS(2) are demonstrated to stabilize emulsions at ultralow nanosheet volume fractions, approaching the minimum loading achievable with 2D materials. These nanosheet-stabilized emulsions allow controlled droplet deposition free from the coffee ring effect to facilitate single-droplet devices from minute quantities of material or assembly into large-area films with high network conductivity. To broaden the range of compositions and subsequent applications, an understanding of emulsion stability and orientation in terms of surface energy of the three phases is developed. Importantly, this model facilitates determination of the surface energies of the nanosheets themselves and identifies strategies based on surface tension and pH to allow design of emulsion structures. Finally, this approach is used to prepare conductive silicone emulsion composites with a record-low loading level and excellent electromechanical sensitivity. The versatility of these nanosheet-stabilized emulsions illustrates their potential for low-loading composites, thin-film formation and surface energy determination, and the design of functional structures for a range of segregated network applications.
format Online
Article
Text
id pubmed-9007533
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-90075332022-04-14 Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks Ogilvie, Sean P. Large, Matthew J. O’Mara, Marcus A. Sehnal, Anne C. Amorim Graf, Aline Lynch, Peter J. Cass, Adam J. Salvage, Jonathan P. Alfonso, Marco Poulin, Philippe King, Alice A. K. Dalton, Alan B. ACS Nano [Image: see text] Here, we develop a framework for assembly, understanding, and application of functional emulsions stabilized by few-layer pristine two-dimensional (2D) nanosheets. Liquid-exfoliated graphene and MoS(2) are demonstrated to stabilize emulsions at ultralow nanosheet volume fractions, approaching the minimum loading achievable with 2D materials. These nanosheet-stabilized emulsions allow controlled droplet deposition free from the coffee ring effect to facilitate single-droplet devices from minute quantities of material or assembly into large-area films with high network conductivity. To broaden the range of compositions and subsequent applications, an understanding of emulsion stability and orientation in terms of surface energy of the three phases is developed. Importantly, this model facilitates determination of the surface energies of the nanosheets themselves and identifies strategies based on surface tension and pH to allow design of emulsion structures. Finally, this approach is used to prepare conductive silicone emulsion composites with a record-low loading level and excellent electromechanical sensitivity. The versatility of these nanosheet-stabilized emulsions illustrates their potential for low-loading composites, thin-film formation and surface energy determination, and the design of functional structures for a range of segregated network applications. American Chemical Society 2022-02-02 2022-02-22 /pmc/articles/PMC9007533/ /pubmed/35107970 http://dx.doi.org/10.1021/acsnano.1c06519 Text en © 2022 American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Ogilvie, Sean P.
Large, Matthew J.
O’Mara, Marcus A.
Sehnal, Anne C.
Amorim Graf, Aline
Lynch, Peter J.
Cass, Adam J.
Salvage, Jonathan P.
Alfonso, Marco
Poulin, Philippe
King, Alice A. K.
Dalton, Alan B.
Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks
title Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks
title_full Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks
title_fullStr Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks
title_full_unstemmed Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks
title_short Nanosheet-Stabilized Emulsions: Near-Minimum Loading and Surface Energy Design of Conductive Networks
title_sort nanosheet-stabilized emulsions: near-minimum loading and surface energy design of conductive networks
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9007533/
https://www.ncbi.nlm.nih.gov/pubmed/35107970
http://dx.doi.org/10.1021/acsnano.1c06519
work_keys_str_mv AT ogilvieseanp nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT largematthewj nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT omaramarcusa nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT sehnalannec nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT amorimgrafaline nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT lynchpeterj nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT cassadamj nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT salvagejonathanp nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT alfonsomarco nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT poulinphilippe nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT kingaliceak nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks
AT daltonalanb nanosheetstabilizedemulsionsnearminimumloadingandsurfaceenergydesignofconductivenetworks