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

Journal of Chemical Sciences

Sanjay Patil¹  Bhalchandra Kakade¹  Bhaskar Sathe¹  Suresh Gokhale¹  Vijayamohanan Pillai1¹ 

[1] Physical and Materials Chemistry Division, National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411 008$$

关键词: Carbon nanotubes;    nanostructures;    microscopy;    microwave;    solubility of SWNTs.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown