Adsorption superlattice stabilized by elastic interactions in a soft porous crystal

Abstract

We numerically show that molecules adsorbed in a soft porous crystal form a superlattice (SL) stabilized by elastic interactions. In a mechanically flexible honeycomb lattice model, when the elastic interactions between the next nearest neighboring lattice sites are strong, a long-range ordered 1/3-filling SL state emerges. By calculating the thermodynamic stability, it is found that the SL state is robust against thermal fluctuation. Our results provide a mechanism of elasticity-driven SL formation, which can be utilized for controlling the distribution of adsorbed molecules.

9 pages, 5 figures. arXiv admin note: text overlap with arXiv:2211.03370

References in corpus (4)

• Thermodynamics of Guest-Induced Structural Transitions in Hybrid Organic-Inorganic Frameworks
• Structural, elastic, thermal, and electronic response of small-molecule-loaded metal organic framework materials
• Elastic heterogeneity governs asymmetric adsorption-desorption in a soft porous crystal
• Magnetic Switching by Oxygen Adsorption in Metal-Organic Framework Systems

Cited by in corpus (1)

• Elastic heterogeneity governs anomalous scaling in a soft porous crystal