skip to main content

Title: The Role of Solvent Heterogeneity in Determining the Dispersion Interaction Between Nanoassemblies

Understanding fundamental nanoassembly processes on intermediate scales beween the molecular and the continuum requires an in-depth analysis of the coupling between particle interactions and molecular detail. This is because the discrete nature of the solvent becomes comparable to the characteristic length scales of assembly molecular fluctuations. Utilizing the spatial density resonse of a solvent to a surface in conjunction with the Clausius-Mossotti equation, we present a simple theory relating the discrete nature of solvent to dispersion interactions. Our study reveals that dispersion interactions are indeed sensitive to the spatial variation of solvent density, manifesting in dramatic deviations in van der Waals forces from the conventional formulation (e.g. with uniform solvent density). This study provides the first steps toward incorporating molecular scale principles that underlie hydration forces where the detailed nature of solvent responses play a significant role.
Authors:
; ;
Publication Date:
OSTI Identifier:
1208719
Report Number(s):
PNNL-SA-107249
KC0301020
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Physical Chemistry B, 119(18):5873-5881
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
solvent structure; dispersion interaction; nanoassembly; molecular Lifshitz formulation; oriented attachment