Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (2): 20230443.doi: 10.7503/cjcu20230443

• Polymer Chemistry • Previous Articles     Next Articles

Excess Entropy of Janus Particles Immersed in Hydrogen Bonding Fluids

CHEN Qingqing1, LI Jiangtao1, HUANG Xinrong1, GU Fang1(), WANG Haijun1,2,3()   

  1. 1.College of Chemistry and Material Science
    2.Chemical Biology Key Laboratory of Hebei Province
    3.Key Laboratory of Medicinal Chemistry and Molecular Diagnosis,Ministry of Education,Hebei University,Baoding 071002,China
  • Received:2023-10-16 Online:2024-02-10 Published:2023-11-15
  • Contact: GU Fang E-mail:fanggu@hbu.edu.cn;whj@hbu.edu.cn
  • Supported by:
    the Central Guidance on Local Science and Technology Development Fund of Hebei Province, China(236Z7601G);the Natural Science Foundation of Hebei Province, China(B2022201050);the Interdisciplinary Research Program of Natural Science of Hebei University, China(DXK202112)

Abstract:

Rich aggregation states and phase behavior of Janus particles can be observed in various solvents because of its characterized features, which is closely related to its excess entropy in solution. For the mixture of Janus particles immersed in a hydrogen-bonding(HB) fluid, we presented the excess entropy of a Janus particle in the limit of dilute solution. This investigation was performed by means of the density functional theory for classical fluids. With the aid of local density profiles of HB fluid around the Janus particle under various conditions, the pair correlation functions were given and then were employed to calculate the excess entropy. Furthermore, the effect of interactions between Janus particle and HB fluid, bulk density of HB fluid, HB strength and HB functionality on the excess entropy was elucidated. An attempt was made to find the dependence of the excess entropy on these factors such that the driving force of the assembly of Janus particles can be quantitatively presented. As a result, it is expected that such an effort can provide useful clues to investigate aggregation of Janus particles.

Key words: Janus particle, Hydrogen bonding fluid, Excess entropy, Classical density functional theory

CLC Number: 

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