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Title: Oversaturating Liquid Interfaces with Nanoparticle‐Surfactants

Journal Article · · Angewandte Chemie
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5]; ORCiD logo [6]
  1. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA-94720 USA
  2. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA-94720 USA, Polymer Science and Engineering Department University of Massachusetts Amherst MA-01003 USA
  3. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA-94720 USA, Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA-94720 USA
  4. Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA-94720 USA
  5. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA-94720 USA, Department of Materials Science and Engineering University of California, Berkeley Berkeley CA-94720 USA
  6. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA-94720 USA, Polymer Science and Engineering Department University of Massachusetts Amherst MA-01003 USA, Advanced Institute for Materials Research (AIMR) Tohoku University 2-1-1 Katahira, Aoba Sendai 980-8577 Japan

Abstract Assemblies of nanoparticles at liquid interfaces hold promise as dynamic “active” systems when there are convenient methods to drive the system out of equilibrium via crowding. To this end, we show that oversaturated assemblies of charged nanoparticles can be realized and held in that state with an external electric field. Upon removal of the field, strong interparticle repulsive forces cause a high in‐plane electrostatic pressure that is released in an explosive emulsification. We quantify the packing of the assembly as it is driven into the oversaturated state under an applied electric field. Physiochemical conditions substantially affect the intensity of the induced explosive emulsification, underscoring the crucial role of interparticle electrostatic repulsion.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2345801
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 24 Vol. 136; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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