Addition and correction

Selective diameter uptake of single-walled carbon nanotubes in water using phosphonated calixarenes and ‘extended arm’ sulfonated calixarenes

Lee J. Hubble, Thomas E. Clark, Mohamed Makha and Colin L. Raston

J. Mater. Chem., 2008, 18, 5961–5966 (DOI: 10.1039/b814904f). Amendment published 11th December 2008.

The authors regret the following errors:

A sentence in the section Raman spectroscopy in the Results and discussion that reads:

“The results indicate that the peak width of the D-band at ~1590 cm^-1 has decreased significantly from 100 cm^-1 in the as-received SWCNTs to 20–40 cm^-1 (FWHM) in all tested systems (Fig. 4A and 5A).”

should read:

“The results indicate that the peak width of the D-band at ~1340 cm^-1 has decreased significantly from 100 cm^-1 in the as-received SWCNTs to 20–40 cm^-1 (FWHM) in all tested systems (Fig. 4A and 5A).”

A sentence in the same section that reads:

“As previously mentioned the smaller diameter SWCNTs were more readily solubilized into aqueous media. However, the data indicate that there are larger SWCNT diameters solubilized when using 4B (1.55 and 1.42 nm) and 4C (1.35 nm). In the case of 4B and 4C involving the ‘extended arm’ sulfonated calix[8]arenes, the large G-band shifts indicate strong nanotube surface interactions. This suggests a different type of interplay with the SWCNT surface, in solubilizing the larger diameter SWCNTs. This is consistent with the increased conformational flexibility of the larger ring size calixarene.”

should read:

“As previously mentioned the smaller diameter SWCNTs were more readily solubilized into aqueous media. However, the data indicates that there are larger SWCNT diameters solubilized when using 4C (1.35 nm). In the case of 4C involving an ‘extended arm’ sulfonated calix[8]arene, the large G-band shift indicates strong nanotube surface interactions. This suggests a different type of interplay with the SWCNT surface, in solubilizing the larger diameter SWCNTs. This is consistent with the increased conformational flexibility of the larger ring size calixarene.”

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

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