am0c01398_si_001.pdf (8.02 MB)
Morphological Evolution of Two-Dimensional Porous Hexagonal Trimesic Acid Framework
journal contribution
posted on 2020-03-18, 21:03 authored by Srinu Tothadi, Kalipada Koner, Kaushik Dey, Matthew Addicoat, Rahul BanerjeeHexagonal
single crystal structure (Form II) of trimesic acid (TMA)
has been isolated by dissolving the interpenetrated Form I of TMA
in tetrahydrofuran. Form II (hexagonal) was converted to Form I (interpenetrated)
at room temperature through some intermediate structures. A detailed
time-dependent FESEM study shows that the external morphology of Form
II (hexagonal) is a hollow hexagonal tube that mimics its crystal
structure. The block-shaped (morphology) of Form I (interpenetrated)
was converted to the hollow hexagonal tube through some intermediate
morphologies which are corresponding to particular crystal structures.
Here, we have established a strong correlation between crystal structures
with the morphology. These hollow tubes have been employed for Rhodamine
B dye adsorption studies and showed an uptake of 82%, much more significant
than Form I (interpenetrated) (39%) due to the presence of a pore
channel in the crystal structure.