Thermal, catalytic and antimicrobial aspects of polychelates of phenolic resin with lanthanides (III)

The polymeric ligand (resin) was synthesized by condensation of 2-hydroxy-4-ethoxybenzophenone with 1,2-propylene glycol in presence of polyphosphoric acid as a catalyst at 150 °C for 10 h. The resin and its polychelates were characterized on the basis of elemental analyses, electronic spectra, magnetic susceptibilities, Fourier transform infrared spectroscopy (FTIR), NMR and thermogravimetric analyses. Morphological Study of resin and polychelates were carried out by scanning electron microscope (SEM). The number average molecular weight (M¯n) was determined using vapor pressure osmometry (VPO) method. Antimicrobial activity of polychelates and catalytic activity of selected polychelates in organic synthesis have been studied. It was observed that, polychelates were found efficient catalysts and effective antimicrobial agents.