Decoration and utilization of a special class of metal–organic frameworks containing the fluorine moiety

Fluorinated linkers enable the synthesis of flexible MOFs with 1D alkaline earth SBUs and a temperature-induced phase transition

“…Remarkably, there are no indications for interactions of the C-F moieties of the 3F-BTB linker with DMF guest molecules. Unlike reported/postulated for many other F-MOFs, [5][6][7][8] direct fluorine contacts to guest molecules seem to play only a negligible role in UoC-9 materials. The Hirshfeld-isosurfaces of the 3F-BTB linkers (Fig.…”

“…It does however become apparent from the herein presented findings, that secondary effects of fluorine substituents, such as their inductive influence on π-systems, play a greater role in host–guest-interactions than simple R–F⋯guest contacts as suggested for many other FMOFs. 5–8…”

“…It does however become apparent from the herein presented findings, that secondary effects of fluorine substituents, such as their inductive influence on π-systems, play a greater role in host-guest-interactions than simple R-F⋯guest contacts as suggested for many other FMOFs. [5][6][7][8] Experimental Synthetic procedures H 3 -3F-BTB. The linker was synthesized following the procedure of Christoffels et al 25 starting from 1,3,5-trifluorobenzene over three steps.…”

“…MOFs consist of inorganic building blocks and organic linkers, where both components can be functionalized or modified to improve the properties of the resulting materials. 4 Fluorine as a substituent of the organic linker has attracted the attention of many research groups due to improved properties in the fields of gas-storage and separation, [5][6][7][8] when compared to the non-fluorinated MOF counterparts. Generalizing trends, of how fluorine substituents influence the interactions of the host framework with guest molecules, is made difficult due to the relatively sparse list of isostructural framework materials with different degrees of fluorination.…”

Pristine Metal–Organic Frameworks and their Composites for Renewable Hydrogen Energy Applications

“…Functionalization of the ligands with functional groups or atoms or with photosensitizer units can effectively regulate the photo/electrochemical properties of pristine MOFs. [ 122 ] For example, the introduction of electronegative functional groups (such as −NH 2 , –COOH, −CF 3 , −SCH 3 )‐functionalized linkers into MOFs can expand the absorption windows toward visible‐light region by regulating the band gap for efficient photocatalytic HER. [ 123 ] Also, the functional groups can improve the interaction between framework and H 2 , resulting in higher storage capacity via enhanced adsorption heats of H 2 .…”