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The present research focus is to design a new catalyst by doping polyoxometalate (POM) in conducting polymers. Polypyrrole (PPy)-doped Keggin type POM [PMO12O40]3− with various molar concentrations were synthesized using the coprecipitation method. The doped samples were synthesized and characterized using spectral techniques such as Fourier transform infrared spectra, which show the presence of extended functional groups, and scanning electron microscopic morphology exhibits a square-shaped structure. X-Ray diffraction results reveal crystallite size of around 40 nm. The conductivity of PPy is 3.3 × 10−6 S cm−1, whereas polyacid-doped polypyrrole has resulted in increased conductivity of 7.12 × 10−5 S cm−1. The antimicrobial activity of PPy revealed a better antibacterial activity due to the presence of the NH group and aromatic ring in the structure.

A novel hybrid composite, namely {[VIV+PMo11O40]⊂[β-CD]} which shows the high percent of apoptosis of MTT assay of A549 cell line (lung cancer) in different concentrations. The composite has been characterized using techniques such as FT-IR, EPR, SEM, EDS and X-ray diffraction. The anticancer (lung cancer A549 cell line) was investigated using direct microscopic observations for drug treated cell line and IC50 value of 1.93. The apoptosis of 45.37 % cell death in cell line of minimum concentration (3.12 μg/mL) shows the good viability of β-CD-POM against lung cancer A549 cell line.

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A novel composite of curcumin diketimine (CDK)-heteropolyacid (where HPA = vanadium doped Keggin anion and CDK = curcuminbenzoguanamine) had been synthesized. The hybrid composites were investigated by analytical methods such as elemental analysis, FTIR, 13C NMR, SEM, EDS, XRD, DSC-TGA, ESR spectral studies and biological activities. Encapsulated hybrid composite also studied (in vitro) against MCF-7 cancer cell lines. ESR results showed that the presence of (V4+) ion nitrogen ligation in the composite. 13C NMR of CDK ligand value of 183.37 and 55.06 ppm corresponds to (2=N) and (O-CH3) may be due to the composites. The morphology of molybdovanadate (HPA) showed a structure of self-assembled round shape of a diameter around 1 μm.