Nanotubes Multi-walled nanotube amidated with

Mallakpour S, Zadehnazari A. Efficient functionalization of multi-walled carbon nanotubes with p-aminophenol and their application in the fabrication of poly(amide-imide)-matrix composites. Polym Int 2013. 

Immobilisation of boronic acids on high surface area materials such as multi-walled carbon nanotubes with exposed carboxylate functional groups either via a single coupling step" or via dual coupling steps to form amide bonds (see Figure 8.6A and B) can provide electrode material with high sensitivity and selectivity towards ort/to-quinols such as dopamine. 

Amide bond is an effective anchor to connect CNTs to substrate surfaces. Lan et al. [52] covalently assembled shortened multi-walled carbon nanotubes (s-MWNT) on polyelectrolyte films. The shortened MWNT is functionalized with acyl chloride in thionyl chloride (SOCl2) before self-assembling. The FTIR spectrum of self-assem-bled MWNT (SA-MWNT) adsorbed on a CaF2 plate modified with PEI/(PSS/PEI)2 shows two characteristic absorption peaks at 1646cm-1 (amide I bond) and 1524cm-1 (amide II bond) resulting from the amide bond formed between the polyelectrolyte films and s-MWNTs. 

Zhou G J, Wang S F, Zhang Y, Zhuang Q X and Han Z W (2008) In situ preparation and continuous fiber spinning of poly(p-phenylene benzobisoxazole) composites with oligo-hydroxy-amide-functionalized multi-walled carbon nanotubes, Polymer 49 2520-2530. 

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