Abstract:
Covalent organic frameworks (COFs) represent a class of advanced porous materials
with outstanding properties such as less density, excellent surface area, and adjustable
pore structure and size. These materials proved themselves promising in several fields
including separation science, catalysis, sensing, and biomedicine. Recently, many
techniques have been developed to synthesize different types of COFs for instance
boron-based COFs, imine-based COF, hydrazine-based COFs, and ketoenamine-based
COFs according to the nature of linkers and the purpose of application. Among these
types of COFs, imine-based COFs are found to be most potential candidate for various
applications. Major selection factors in the synthesis of COFs include stability of
monomers and facile synthesis route at room temperature. Keeping in view all the
above aspects, an imine-based COF has been synthesized at room temperature.
Triformylbenzene (TFB) and benzidine (BD) monomers reacted at reported conditions
and successfully obtained COF, donated as TFB-BD. Successful synthesis and structure
of the COF TFB-BD was confirmed by FTIR and XRD. In FTIR the C=N peak at 1617
cm-1
clearly indicated the formation of framework between the two monomers. In XRD
strongest diffraction peak at 2Ө at 2.66° presented confirmation of crystalline nature of
synthesized COF-TFB-BD. Furthermore, in SEM and TEM imaging, the
morphological characteristic showed porous nature of the prepared COF. Literature
describes the utilization of this COF may be explored for biomedical application.
