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Title: A molecular Debye-Huckel theory of solvation in polar fluids: An extension of the Born model

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/1.4998255· OSTI ID:1415821
ORCiD logo [1]; ORCiD logo [2]
  1. Guizhou Education Univ., Guiyang (People's Republic of China); Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States)

A dielectric response theory of solvation beyond the conventional Born model for polar fluids is presented. The dielectric response of a polar fluid is described by a Born response mode and a linear combination of Debye-Hückel-like response modes that capture the nonlocal response of polar fluids. The Born mode is characterized by a bulk dielectric constant, while a Debye-Hückel mode is characterized by its corresponding Debye screening length. Both the bulk dielectric constant and the Debye screening lengths are determined from the bulk dielectric function of the polar fluid. The linear combination coefficients of the response modes are evaluated in a self-consistent way and can be used to evaluate the electrostatic contribution to the thermodynamic properties of a polar fluid. In conclusion, our theory is applied to a dipolar hard sphere fluid as well as interaction site models of polar fluids such as water, where the electrostatic contribution to their thermodynamic properties can be obtained accurately.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1415821
Alternate ID(s):
OSTI ID: 1411490
Report Number(s):
IS-J-9538; TRN: US1800857
Journal Information:
Journal of Chemical Physics, Vol. 147, Issue 21; ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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