Aqueous Dispersion of Single-Walled Carbon Nanotubes Using Tetra-Phenyl Bimesitylene Derivative via Noncovalent Modification and Improved Antimicrobial Activity

Ursu, Elena-Laura; Roșca, Irina; Bahrin, Lucian Gabriel; Clima, Lilia; Bejan, Dana; Sardaru, Monica C.; Marangoci, Narcisa; Lozan, Vasile; Rotaru, Alexandru

doi:10.1166/jnn.2019.16762

Cited by 6 publications

(4 citation statements)

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“…conducted a study to demonstrate the antifungal effect against A. niger, A. fumigatus, Candida albicans, P. chrysogenum, S. cerevisiae, F. culmorum, M. canis, T. mentagrophytes, T. rubrum, and P. lilacinum [ 140 ]. Single-walled carbon nanotubes dispersed in tetra-arylbimesityl derivative activated with a carboxy group were used to demonstrate antifungal activity against E. coli, S. aureus, and Candida albicans [ 141 ].…”

Section: Applications Of Cntsmentioning

confidence: 99%

Ultrafast growth of carbon nanotubes using microwave irradiation: characterization and its potential applications

Baghel

Sakhiya

Kaushal

2022

Heliyon

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Section: Applications Of Cntsmentioning

confidence: 99%

Ultrafast growth of carbon nanotubes using microwave irradiation: characterization and its potential applications

Baghel

Sakhiya

Kaushal

2022

Heliyon

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“…This indicates that the antimicrobial activity of functionalized MWCNTs contains a strong treatment time dependence. Figure 9 indicates the effect of control samples on the viability of pathogens examined by the colony counting method, after being treated with different agents at a concentration of 100 µg/mL for 24 h and 48 h. It has been observed that both purified-CNTs and only the surfactant showed less inhibition of microbial growth after overnight incubation, suggested that unmodified-CNTs did not show any significant antimicrobial activity because nanotubes in bundle forms produce less antimicrobial effect to the pathogens [41]. It has also been examined that changes occur in the number of viable cells after pathogens treated under the same condition used to check the optical density (OD) growth curves.…”

Section: Microbial Viability Based On Concentration and Treatment Timementioning

confidence: 99%

“…Higher dispersion means CNTs strongly interact with the cells and thus, the cell death rate is significantly higher [13]. In fact, a good dispersion is very important premise for the CNTs to show higher microbial cells' inactivation [41]. Hence, it is rational to attain the result that unmodified-CNTs did not demonstrate the antimicrobial activity to the pathogens.…”

Section: Microbial Viability Based On Concentration and Treatment Timementioning

confidence: 99%

Elucidation of Antimicrobial Activity of Non-Covalently Dispersed Carbon Nanotubes

et al. 2020

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Microorganisms have begun to develop resistance because of inappropriate and extensive use of antibiotics in the hospital setting. Therefore, it seems to be necessary to find a way to tackle these pathogens by developing new and effective antimicrobial agents. Carbon nanotubes (CNTs) have attracted growing attention because of their remarkable mechanical strength, electrical properties, and chemical and thermal stability for their potential applications in the field of biomedical as therapeutic and diagnostic nanotools. However, the impact of carbon nanotubes on microbial growth has not been fully investigated. The primary purpose of this research study is to investigate the antimicrobial activity of CNTs, particularly double-walled and multi-walled nanotubes on representative pathogenic strains such as Gram-positive bacteria Staphylococcus aureus, Gram-negative bacteria Pseudomonas aeruginosa, Klebsiella pneumoniae, and fungal strain Candida albicans. The dispersion ability of CNT types (double-walled and multi-walled) treated with a surfactant such as sodium dodecyl-benzenesulfonate (SDBS) and their impact on the microbial growth inhibition were also examined. A stock concentration 0.2 mg/mL of both double-walled and multi-walled CNTs was prepared homogenized by dispersing in surfactant solution by using probe sonication. UV-vis absorbance, Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM) were used for the characterization of CNTs dispersed in the surfactant solution to study the interaction between molecules of surfactant and CNTs. Later, scanning electron microscopy (SEM) was used to investigate how CNTs interact with the microbial cells. The antimicrobial activity was determined by analyzing optical density growth curves and viable cell count. This study revealed that microbial growth inhibited by non-covalently dispersed CNTs was both depend on the concentration and treatment time. In conclusion, the binding of surfactant molecules to the surface of CNTs increases its ability to disperse in aqueous solution. Non-covalent method of CNTs dispersion preserved their structure and increased microbial growth inhibition as a result. Multi-walled CNTs exhibited higher antimicrobial activity compared to double-walled CNTs against selected pathogens.

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“…In the past few years, our interest in the field has led to several new Metal-Organic Frameworks, as well as a number of organic linkers that can be used in MOF design [24][25][26][27][28][29][30][31][32][33][34][35][36]. With the goal of obtaining novel MOFs with permanent porosity which have the potential to be used for gas storage, in this work we synthesized and characterized three new Metal-Organic Frameworks, obtained using Zn (II) and Cd (II) as metal sources and 2,4,6-tris(4carboxyphenyl)-1,3,5-trimethylbenzene (mesitylene tribenzoic acid-H 3 MTB) an organic linker which to this day, has only seen limited use in MOF design.…”

Section: Introductionmentioning

confidence: 99%

Mesitylene Tribenzoic Acid as a Linker for Novel Zn/Cd Metal-Organic Frameworks

Bejan¹,

Dascalu²,

Shova³

et al. 2022

Materials

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Three new Metal-Organic Frameworks, containing mesitylene tribenzoic acid as a linker and zinc (1) or cadmium as metals (2,3), were synthesized through solvothermal reactions, using DMF/ethanol/water as solvents, at temperatures of 80 °C (structures 1 and 3) and 120 °C (structure 2). Following single-crystal X-ray diffraction, it was found that 1 and 3 crystallize in the P21/c and C2/c space groups and form 2D networks, while 2 crystallizes in the Fdd2 space group, forming a 3D network. All three frameworks, upon heating, were found to be stable up to 350 °C. N2 sorption isotherms revealed that 1 displays a BET area of 906 m2/g. Moreover, the porosity of this framework is still present after five cycles of sorption/desorption, with a reduction of 14% of the BET area, down to 784 m2/g, after the fifth cycle. The CO2 loading capacity of 1 was found to be 2.9 mmol/g at 0 °C.

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Aqueous Dispersion of Single-Walled Carbon Nanotubes Using Tetra-Phenyl Bimesitylene Derivative via Noncovalent Modification and Improved Antimicrobial Activity

Cited by 6 publications

References 0 publications

Ultrafast growth of carbon nanotubes using microwave irradiation: characterization and its potential applications

Ultrafast growth of carbon nanotubes using microwave irradiation: characterization and its potential applications

Elucidation of Antimicrobial Activity of Non-Covalently Dispersed Carbon Nanotubes

Mesitylene Tribenzoic Acid as a Linker for Novel Zn/Cd Metal-Organic Frameworks

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