Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (5): 1042.doi: 10.7503/cjcu20190709

• Physical Chemistry • Previous Articles     Next Articles

Regulation of Phase State of Dipolar Janus Particles and Its Application

LI Honghong1,GENG Keying1,TIAN Fuyue1,GU Fang1,*(),WANG Haijun1,2,*()   

  1. 1. College of Chemistry and Environmental Science
    2. Chemical Biology Key Laboratory of Hebei Province, Hebei University, Baoding 071002, China
  • Received:2019-12-25 Online:2020-05-10 Published:2020-02-17
  • Contact: Fang GU,Haijun WANG E-mail:fanggu@hbu.edu.cn;whj@hbu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(21374028);the Project for Talent Engineering of Hebei Province, China(A2016015001);the Top Young Talent Project for General Colleges of Hebei Province, China(BJ2017017)

Abstract:

The aggregation and phase states of dipolar Janus particles were presented based on the thermodynamic perturbation theory. An attempt was made to find how the association, dipole-dipole interaction and external electric field regulate the cluster structures and properties of the system. It was shown that there existed a competition between chainlike and branched structures in a cluster, which resulted in an entirely different phase behavior from the common fluids. As an application, the dielectric constants for the gas-like and liquid-like phases were carried out, which demonstrated a significant dependence on the association, dipole-dipole interaction and external electric field. Interestingly, the reproducibility of dielectric constant with changeable temperature for the liquid-like phase was found, which could be useful for designing the relevant materials.

Key words: Dipolar Janus particle, Phase equilibria, Aggregation state, Dielectric constant

CLC Number: 

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