Hydrogenic defects in metal-organic frameworks Christopher Hendon University of Oregon, Eugene, OR, 97403 USA
Typical metal-organic frameworks (MOFs) are constructed by combining organic acids with transition metals to form 3D arrays of metals/metal clusters suspended by Lewis basic organo-linkers. During this assembly, there are numerous mechanisms for defect formation, and these defects may have dramatic impact on the bulk material properties. Hydrogenic adatoms are particularly interesting, as they should be present due to incomplete deprotonation of the organic acids. Yet, these defects are experimentally difficult to detect. In this poster we discuss avenues to control the number of adatomic hydrogen atoms by affecting the nuclearity of the MOF nodes, highlighting a unique molecular-like property afforded to MOFs: site isolated redox events. In systems with delocalized electronic structures, the adatomic hydrogen atoms can be used to dope the framework, affecting the Fermi level. Together, we highlight that adatomic hydrogen is likely a prevalent defect in MOFs and may be useful for control bulk material properties. References 1. Chem. Sci., 2021, 12, 11779
2. J. Am. Chem. Soc. 2021, 143, 12609 3. J. Am. Chem. Soc. 2023, 145, 6257
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