Abstract
Palladium nanoparticles (PdNPs) of uniform size in the range of 3–5 nm are prepared in MeOH and MeCN:MeOH by solvent-assisted reduction of palladium acetate in presence of a hexaazamacrocyclic ligand, L1. For the mixed solvent system different ratio of the solvents was tried i.e., 1:1, 1:3 and 3:1. In all cases the concentration and ratio of Pd(II) to L1 was maintained at 2 mM:1 mM. In another experiment NPs were prepared in MeOH by lowering the concentration of L1 to 0.5 mM, where chain-like assemblies of PdNPs was observed. Importantly, the solutions are found to be stable at RT for months. Palladium nanoparticles of uniform size (3-5 nm range) are obtained by solvent-assisted reduction of 2mM palladium acetate in MeOH and MeCN: MeOH in presence of a hexaazamacrocyclic ligand. Chain-like arrangement of the nanoparticles was seen in MeOH medium by lowering the concentration of the ligand from 1 to 0.5 mM.
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