作者: D. Bousquet , F.-X. Coudert , A. Boutin
DOI: 10.1063/1.4738776
关键词: Boltzmann equation 、 Boltzmann constant 、 Chemical physics 、 Porous medium 、 Metastability 、 Volume (thermodynamics) 、 Adsorption 、 Monte Carlo method 、 Thermodynamic equilibrium 、 Materials science
摘要: Soft porous crystals are flexible metal-organic frameworks that respond to physical stimuli such as temperature, pressure, and gas adsorption by large changes in their structure unit cell volume. While they have attracted a lot of interest, molecular simulation methods directly couple structural deformations an efficient manner still lacking. We propose here new Monte Carlo method based on non-Boltzmann sampling (guest loading, volume) space using the Wang–Landau algorithm, show it can be used fully characterize properties material's response at thermodynamic equilibrium. showcase this simple model MIL-53 family breathing materials, demonstrating its potential contrasting with pitfalls direct, Boltzmann simulations. furthermore explanation for hysteretic nature terms free energy barriers between two metastable host phases.