Efficient method for functionalization of carbon nanotubes by lysine and improved antimicrobial activity and water-dispersion

Amiri, Ahmad; Zare‐Zardini, Hadi; Shanbedi, Mehdi; Maghrebi, Morteza; Baniadam, Majid; Tolueinia, Behnaz

doi:10.1016/j.matlet.2011.12.114

Cited by 88 publications

(53 citation statements)

References 15 publications

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“…Among the tested microorganisms, the Gram‐negative bacteria are more sensitive than Gram‐positive bacteria. This result was observed in functionalized MWCNT with amino acids at previous articles, too . As shown in Figure and Table , the pristine MWCNT, MWCNT‐MEA, MWCNT‐DEA, and MWCNT‐TEA inhibit Gram‐negative bacterial growth in the range of 8.25–9.12, 5.23–8.65, 3.36–8.23, and 2.87–6.95, respectively.…”

Section: Resultssupporting

confidence: 69%

“…The micro plate was incubated at 37°C for 18 h. After this time, the absorbance was read at 630 nm with enzyme‐linked immunosorbent assay reader. The MIC was defined the lowest concentration that the bacterial growth was completely inhibited …”

Section: Methodsmentioning

confidence: 99%

“…In contrast, carbon nanostructures are less solved, and could decorate with special functional groups in order to enhance novel potential in the disinfection area . Among various carbon nanostructures, carbon nanotubes (CNTs) have been recently verified to own positive antimicrobial properties, and their relevant activities were attributed to the physical membrane‐damage mechanism . The former researches demonstrated that CNT showed the effective antimicrobial activity and high potential to defect the diseased pathogens.…”

Section: Introductionmentioning

confidence: 99%

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Microbial toxicity of ethanolamines—Multiwalled carbon nanotubes

Zare‐Zardini

Davarpanah

Shanbedi

et al. 2013

J Biomedical Materials Res

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In the present study, antimicrobial activities of multiwalled carbon nanotubes (MWCNTs) functionalized with ethanolamine (EA) groups were investigated. Therefore, MWCNT were first functionalized with mono-, di-, and triethanolamine (MEA, DEA, and TEA) under microwave technique. Development of functional groups on the MWCNT surface was confirmed by Fourier transform infrared and thermogravimetric analysis. Morphological variation was investigated by transmission electron microscopy. Then, antimicrobial activities of pristine and functionalized MWCNT (MWCNT-MEA, -DEA, and -TEA) were tested against different bacteria species. The studies have been done on four Gram-negative bacteria (Escherichia coli, Klebsiella pneumonia, Pseudomonas aeroginosa, and Salmonella typhimurium) as well as four Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus, Bacillus cereus, and Streptococcus pneumonia). The results based on minimal inhibitory concentration and radial diffusion assay were shown that the antimicrobial activity of MWCNT-TEA > MWCNT-DEA > MWCNT-MEA > pristine MWCNT. Based on the results, it seems that EA groups could play an important role in antimicrobial activity of MWCNT.

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Section: Resultssupporting

confidence: 69%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microbial toxicity of ethanolamines—Multiwalled carbon nanotubes

Zare‐Zardini

Davarpanah

Shanbedi

et al. 2013

J Biomedical Materials Res

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“…Therefore, a lot of efforts have been made to optimize the use of CNTs in various applications by attaching functional groups on their surfaces. Now, these functional groups usually are carboxyl [8] , hydroxyl [9], amines [10], sulfonic acid groups [6,7], aryl diazonium salt [11], halogens [12] and so on. Among these functional groups attached to CNTs, the introduction of sulfonic acid groups on the CNTs attracts numerous research interest because of its good stability, considerable solubility, strong surface acidity and their potential applications in solid acid catalysts and catalyst support [6,7].…”

Section: Introductionmentioning

confidence: 99%

A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents

Wei

Ling

Zou

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…The amide I band (C=O stretching) occurs at 1616 cm −1 and the amide II band, resulting from the interaction of N-H bending and the C-N stretching of the C-N-H groups, is observed at 1541 cm −1 , as previously reported. 26 …”

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confidence: 99%

Carbon nanodots as molecular scaffolds for development of antimicrobial agents

Ngu-Schwemlein

Chin

Hileman

et al. 2016

Bioorganic & Medicinal Chemistry Letters

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We report the potential of carbon nanodots (CNDs) as a molecular scaffold for enhancing the antimicrobial activities of small dendritic poly(amidoamines) (PAMAM). Carbon nanodots prepared from sago starch are readily functionalized with PAMAM by using N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS). Electron microscopy images of these polyaminated CNDs show that they are approximately 30–60 nm in diameter. Infrared and fluorescence spectroscopy analyses of the water-soluble material established the presence of the polyamidoaminated moiety and the intrinsic fluorescence of the nanodots. The polyaminated nanodots (CND-PAM1 and CND-PAM2) exhibit in vitro antimicrobial properties, not only to nonmultidrug resistant bacteria but also to the corresponding Gram-negative multidrug bacteria. Their minimum inhibitory concentration (MIC) ranges from 8 to 64 µg/mL, which is much lower than that of PAMAM G1 or the non-active PAMAM G0 and CNDs. Additionally, they show synergistic effect in combination with tetracycline or colistin. These preliminary results imply that CNDs can serve as a promising scaffold for facilitating the rational design of antimicrobial materials for combating the ever-increasing threat of antibiotic resistance. Moreover, their fluorescence could be pertinent to unraveling their mode of action for imaging or diagnostic applications.

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Efficient method for functionalization of carbon nanotubes by lysine and improved antimicrobial activity and water-dispersion

Cited by 88 publications

References 15 publications

Microbial toxicity of ethanolamines—Multiwalled carbon nanotubes

Microbial toxicity of ethanolamines—Multiwalled carbon nanotubes

A facile approach toward preparation of sulfonated multi-walled carbon nanotubes and their dispersibility in various solvents

Carbon nanodots as molecular scaffolds for development of antimicrobial agents

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