TY - JOUR T1 - Near-complete phase transfer of single-wall carbon nanotubes by covalent functionalization JF - Journal of Chemical Sciences Y1 - 2008 A1 - Kakade, Bhalchandra A. A1 - Patil, Sanjay A1 - Sathe, Bhaskar A1 - Gokhale, Suresh A1 - Pillai, Vijayamohanan KW - Carbon nanotubes KW - microscopy KW - Microwave KW - Nanostructures KW - solubility of SWNTs AB -

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 CS(2). 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.

PB - INDIAN ACAD SCIENCES CY - C V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIA VL - 120 IS - 6 N1 - International Conference on Molecules and Materials - New Directions, Bangalore, INDIA, DEC 04, 2008 U3 - Indian U4 - 1.075 ER -