Metal-Organic Frameworks Characterization via Inverse Pulse Gas Chromatography

Abstract

The desire to customize the properties of a material through complete control over both its chemical and architectural structure has created a constant and persistent need for efficient and convenient characterization techniques. Inverse gas chromatography (IGC) is considered a useful characterization method for probing the material’s surface properties, like its enthalpies of adsorption, which are the key stimulus components for their adsorption performance. Here, we conclusively review the significance of a less common application of the IGC technique for the physicochemical characterization of metal-organic frameworks (MOFs), which are an innovative subclass of porous materials with matchless properties in terms of structure design and properties. This review focuses on the fundamental theory and instrumentation of IGC as well as its most significant applications in the field of MOF characterization to shed more light on this unique technique.

Surface Properties of Fluorine-Functionalized Metal–Organic Frameworks Based on Inverse Gas Chromatography

“…The introduction of the surface energy concept can better reflect the changes of basic physical and chemical properties of fluorine functional groups after modification of MOF materials, and the degree of intermolecular interaction and chemical exchange effect is well represented, which is crucial for the construction and design of materials. Surface energy is mainly composed of two parts: surface dispersion interaction force and Lewis acid–base interaction. − The inverse gas chromatography (IGC) technique offers the possibility to obtain validated data on surface properties. − The IGC technique was first proposed and used by Conder and Purnell in the 60s of the 20th century, , and after more than 50 years of development, the technology has matured to characterize the physicochemical and thermodynamic properties of many solid materials. ,, There are many advantages regarding this technique: ease of operation, wide range of characterization temperatures, and mature experimental techniques . The test principle is based on the equilibrium properties of the separation of vapor molecules between the mobile phase and the stationary phase .…”

Ag Nanocluster Production through DC Magnetron Sputtering and Inert Gas Condensation: A Study of Structural, Kelvin Probe Force Microscopy, and Optical Properties

“…This technique involves the evaporation of a source material into an inert gas, followed by its controlled condensation, leading to the formation of nanoparticles. While the fundamental principles of IGC are well-understood, optimizing the process parameters for specific materials and desired nanoparticle characteristics remains a challenge [16]. Gas-phase synthesis technology has rapidly evolved in recent years, allowing for the fabrication of complex nanoparticles with a controllable chemical composition and structure.…”

Exploring affinity between organic probes and Prussian Blue Analogues via inverse gas chromatography

“…While porous nanomaterials such as MOFs 33 , 34 and imine-based 2D COFs 33 , 34 , have been characterized extensively using IGC, only a few studies report its use for quantitative analysis of PBA-gas interactions, in particular the interactions with hydrocarbons. Volatile hydrocarbons, like short-chain-length alkanes and low-molecular-weight aromatic derivatives, are of particular interest given their role in fields like the oil and gas industry 35 , 36 , and environmental pollution 36 – 38 .…”