• Bhaskar Sathe

      Articles written in Journal of Chemical Sciences

    • Near-complete phase transfer of single-wall carbon nanotubes by covalent functionalization

      Bhalchandra Kakade Sanjay Patil Bhaskar Sathe Suresh Gokhale Vijayamohanan Pillai

      More Details Abstract Fulltext PDF

      We describe here an efficient phase transfer of single wall carbon nanotubes (SWNTs) from aqueous to non-aqueous media using a unique amide functionalization route, where water soluble SWNTs (2.6 mg/mL) are effectively transferred to solvents like chloroform, toluene and CS2. A maximum of 30 wt% of oxygenated groups have been generated on the side walls by rapid microwave treatment, leading to a solubility of more than 2.6 mg/mL in water. Approximate surface amine coverage of 50% has been accomplished after oxalyl chloride treatment as inferred from thermogravimetry and X-ray photoelectron spectroscopy by controlling several key parameters associated with the extent of functionalization including purity of the sample, temperature and time.

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