cg5002094_si_001.txt (33.83 kB)
Solvent Dependent Formation of Metallogels and Single-Crystal MOFs by La(III) and Ce(III) Connectors and 3,5-Pyridinedicarboxylate
dataset
posted on 2014-06-04, 00:00 authored by Goutam Nandi, Hatem M. Titi, Ranjit Thakuria, Israel GoldbergFormation of new metallogels containing
La(III) (G1) and Ce(III) ions (G2) coordinating
with conformationally
rigid pyridine-3,5-dicarboxylate (3,5-PDC) in dimethylacetamide (DMA)
solvent is reported. Single crystals of the corresponding metal–organic
frameworks of La(III) and Ce(III), [Ln(III)(3,5-PDC)1.5(DMF)]n.DMF, (Ln = La (1), Ce (2)) have been prepared as well by crystallizing
the metallo-organic materials in dimethylformamide (DMF) solvent.
The metallogels formed have been characterized using environmental
scanning electron microscopy (ESEM), scanning electron microscopy
(SEM), tube inversion test, powder X-ray diffraction (PXRD), thermogravimetric
analysis (TGA), rheological studies, and FT-IR spectroscopy. The PXRD
patterns indicate that the gel materials are amorphous in nature.
The FT-IR spectra of the gels and single crystals reveal comparable
fingerprints suggesting similar structural behavior in the two phases.
The isomorphous crystal structures of the MOF materials reveal channeled
architectures with molecules of the crystallization solvent trapped
within them.