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Chemical Structure| 445-29-4 Chemical Structure| 445-29-4
Chemical Structure| 445-29-4

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CAS No.: 445-29-4

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Abbas, Muhammad ; Murari, Bhargavasairam ; Sheybani, Simin ; Joy, Monu ; Balkus Jr, Kenneth J ;

Abstract: Tuning a material’s hydrophobicity is desirable in several industrial applications, such as hydrocarbon storage, separation, selective CO2 capture, oil spill cleanup, and water purification. The introduction of fluorine into rare-earth (RE) metal–organic frameworks (MOFs) can make them hydrophobic. In this work, the linker bis(trifluoromethyl)terephthalic acid (TTA) was used to make highly fluorinated MOFs. The reaction of the TTA and RE3+ (RE: Y, Gd, or Eu) ions resulted in the primitive cubic structure (pcu) exhibiting RE dimer nodes (RE-TTA-pcu). The crystal structure of the RE-TTA-pcu was obtained. The use of the in the synthesis resulted in fluorinated hexaclusters in the face-centered cubic (fcu) framework (RE-TTA-fcu), analogous to the UiO-66 MOF. The RE-TTA-fcu has fluorine on the linker as well as in the cluster. The MOFs were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, thermogravimetric analysis, and contact angle measurements.

Keywords: metal-organic frameworks ; ; hydrophobic materials ; coordination polymers

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Miller, Lars ;

Abstract: This work explores the synthesis and characterization of redox active rare-earth (RE) metal–organic frameworks (MOFs). MOFs are of interest due to their unique properties including permanent porosity, high surface area, and stability. Redox active MOFs have shown promise in a variety of applications including catalysis and molecular electronics. The second chapter will explore materials composed of Ce(IV) clusters bridged by ditopic carboxylate-based linkers. The synthesis of a series of UiO-66 analogues using the redox active metal Ce(IV) is completed with the original linker benzene-1,4-dicarboxylic acid as well as with various functionalized linkers including: 2-aminobenzene-1,4-dicarboxylic acid, 2-fluorobenzene1,4-dicarboxylic acid, 2-bromobenzene-1,4-dicarboxylic acid, 2,5-dihydroxybenzene-1,4- dicarboxylic acid, and 2,3,5,6-tetrafluorobenzene-1,4-dicarboxylic acid. The electrochemical differences between the analogues is explored via cyclic voltammetry. The third chapter delves into the synthesis of a series of redox active MOFs using the tetratopic tetrathiaflvalene-3,4,5,6-tetrakis(4-benzoic acid) (TTFTBA) redox active linker. Synthesis of a 3D cluster based MOF is attempted using Ce(III/IV), Yb(III), and Lu(III). Two new MOFs with shp topology are synthesized using TTFTBA and Yb(III) or Lu(III). The materials are characterized, and their redox properties are explored.

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Alternative Products

Product Details of 2-Fluorobenzoic acid

CAS No. :445-29-4
Formula : C7H5FO2
M.W : 140.11
SMILES Code : C1=CC=CC(=C1C(O)=O)F
MDL No. :MFCD00002405
InChI Key :NSTREUWFTAOOKS-UHFFFAOYSA-N
Pubchem ID :9935

Safety of 2-Fluorobenzoic acid

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H315-H319-H335
Precautionary Statements:P261-P305+P351+P338
 

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