Abstract

Sadaf Sami¹ and Elaheh Rahimpour^*2

DOI : http://dx.doi.org/10.13005/ojc/310442

In this study, we investigated the chemical functionalization of carboxylated multiwalled carbon nanotubes (MWCNT–COOH) by 1-Amino-2-naphthol-4-sulfonic acid (ANSA). The functionalized MWCNTs exhibited good aqueous solubility due to the presence of the –OH and –SO₃H groups of ANSA. The antimicrobial activity of the MWCNT–COOH as well as its functionalized multiwall nanotube MWCNT-CO-2-(1-amino-2-naphthol-4-sulfonic acid) was tested against some gram-negative and gram-positive bacterias. In vitro studies, MWCNT−ANSA represented a significant enhancement in the antimicrobial capability of MWCNTs against gram-negative E. coli and S. typhimurium bacterias. Therefore, these functionalized carboxylated multi wall nanotubes could potentially be considered as antimicrobial candidates.

Carboxylated multiwall nanotubes; Functionalization; 1-Amino-2-naphthol-4-sulfonic acid; Antimicrobial activity

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