Critical factors driving porosity in diverse families of porous solids
Date
2022
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Publisher
University of Delaware
Abstract
New material synthesis calls for optimization and characterization in order to determine peak performance. While this has been studied in porous frameworks, their porous zero-dimensional analogues, metal-organic polyhedra, have yet to be observed in this regard. Through different purification, such as solvent exchange and extractions, and activation methods, such as dynamic vacuum, flowing nitrogen, and freeze drying, a generalized roadmap was developed for consideration of cage advancement. Understanding solubility and properties of prior existing cages allows for a greater progress with new cage evolution and application. ☐ With the fundamental understanding of porous materials, observing how functionalization can impact frameworks likely follows. Porous aromatic frameworks (PAFs) are a uniquely studied porous material with significant advantages when functionalized such as improved selectivity of adsorbents. Two methods for synthesizing functionalized materials are post-synthetic modification and pre-synthetic functionalization, with the latter being minimally explored. The initial work has shown significant promise, though there is much more to be done. ☐ Another novel porous material that functionalization and property optimization can extend to is porous salts. These materials are formed from charged porous cages to forge a mix-functionality framework. This expansion of the preliminary work done on porous salts aims to identify structural and surface area impact when combining a series of different charged porous coordination cages, both functionalized and unfunctionalized.
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Keywords
Porous aromatic frameworks, Porous solids, Metal-organic polyhedra