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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 4
BKCSDE 35(4)
April 20, 2014 

Synthesis and Catalytic Applications of Ruthenium(0) Nanoparticles in Click Chemistry
Avvaru Praveen Kumar, Min-Wook Baek, Chirumarry Sridhar, Begari Prem Kumar, Yong-Ill Lee*
Ru0 Nanoparticles, Chemical co-precipitation, Catalytic activity, Click chemistry
Here we report a facile synthesis of ruthenium (Ru) Nanoparticles (NPs) by chemical co-precipitation method. The calcination of ruthenium hydroxide samples at 500 oC under hydrogen atmosphere lead to the formation of Ru0 NPs. The size and aggregation of Ru NPs depends on the pH of the medium, and type of surfactant and its concentration. The X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope image (TEM) analyses of particles indicated the formation of Ru0 NPs, and have 10 to 20 nm sizes. As-synthesized Ru0 NPs are characterized and investigated their catalytic ability in click chemistry (azidealkyne cycloaddition reactions), showing good results in terms of reactivity. Interestingly, small structural differences in triazines influence the catalytic activity of Ru0 nanocatalysts. Click chemistry has recently emerged to become one of the most powerful tools in drug discovery, chemical biology, proteomics, medical sciences and nanotechnology/nanomedicine. In addition, preliminary tests of recycling showed good results with neither loss of activity or significant precipitation.
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