Characterization of the Interaction of Gamma Cyclodextrin with Single-Walled Carbon Nanotubes

Chambers, Gary; Carroll, Clodagh; Farrell, Garrett F.; Dalton, Alan B.; McNamara, Mary; Panhuis, Marc in het; Byrne, Hugh J.

doi:10.1021/nl034181p

Cited by 107 publications

(87 citation statements)

References 10 publications

(66 reference statements)

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“…The clonogenic results lend further support to the possibility of an indirect toxicity by means of nutrient depletion resulting from SWCNT interaction with the culture medium. SWCNT have been reported to interact and bind to a variety of organic molecules including sugars, proteins and culture medium components (Chambers et al, 2003;Casey et al, 2005Casey et al, , 2007aMoulton et al, 2005). Monteiro-Riviere and Inman (2006) essential nutrients, cytokines and/or growth factors.…”

Section: Cytotoxicity Evaluationmentioning

confidence: 99%

“…Single walled carbon nanotubes (SWCNT) interact strongly with a large range of molecular species from dyes to polysaccharides and bio-molecules (Bandyopadhyaya et al, 2002;Chambers et al, 2003;Casey et al, 2005;Dalton et al, 2000;Hedderman et al, 2004;Keogh et al, 2004;Moulton et al, 2005;Salvador-Morales et al, 2006). Spectroscopic analysis of a commercial cell culture medium, commonly used in toxicity studies, revealed significant interaction of the constituent components with SWCNT.…”

Section: Introductionmentioning

confidence: 99%

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Single walled carbon nanotubes induce indirect cytotoxicity by medium depletion in A549 lung cells

Casey¹,

Herzog²,

Lyng³

et al. 2008

Toxicology Letters

163

113

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Single walled carbon nanotubes induce indirect cytotoxicity by medium depletion in A549 lung cells." Toxicology Letters, 179, 78-84 (2008) t r a c tThe ability of two types of single walled carbon nanotubes (SWCNT), namely Arc Discharge (AD) and HiPco ® single walled carbon nanotubes, to induce an indirect cytotoxicity in A549 lung cells by means of medium depletion was investigated. The nanotubes were dispersed in a commercial cell culture medium and subsequently removed by centrifugation and filtration. Spectroscopic analysis confirmed the removal of the nanotubes and showed differing degrees of alteration of the composition of the medium upon the removal of the nanotubes. The ability to induce an indirect cytotoxic effect by altering the medium was evaluated using two endpoints, namely the Alamar Blue (AB) and the Clonogenic assay. Exposure of the A549 cells to the depleted medium which had previously contained carbonaceous nanoparticles, revealed significant cytotoxicity for both endpoints employed. The results presented demonstrate that single walled carbon nanotubes can induce an indirect cytotoxicity by alteration of cell culture medium (in which they have previously been dispersed) which potentially results in a false positive toxic effect being observed in cytotoxicity studies.

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Section: Cytotoxicity Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single walled carbon nanotubes induce indirect cytotoxicity by medium depletion in A549 lung cells

Casey¹,

Herzog²,

Lyng³

et al. 2008

Toxicology Letters

163

113

View full text Add to dashboard Cite

show abstract

“…Comparing lines (b) and (c), one can see that most of their peaks are parallel, and further changes are observed for the tangential displacement mode (TDM) of G-band compared with line (a), the TDM of G-band in line (b) exhibits a definite upward shift of 2 cm −1 and even further upshift of 39 cm −1 in line (c). This phenomenon led to the suggestion that most of the graphite and cellulose were physically blended in the graphite/cellulose composite film (Chambers et al 2003). Combined with the results discussed in Figs.…”

Section: Characterization Of the Pretreated Graphite/cellulose Compositementioning

confidence: 82%

Conducting Graphite/Cellulose Composite Film as a Candidate for Chemical Vapor-Sensing Material

Liu

Qian

et al. 2014

BioResources

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A type of conductive graphite/cellulose composite film used for chemical vapor-sensing material was prepared at room temperature in the ionic liquid 1-butyl-3-methylimidazolium chloride ([BMIm]Cl). Graphite was pretreated with both oxidation and reduction processes. Due to the use of N,N-carbonyldiimidazole (CDI), as a covalent cross-linking agent in [BMIm]Cl, there were limited chemical bonds between the graphite and cellulose. The composite film was analyzed using Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XRD). When these conducting films were exposed to certain organic vapors, their electrical resistances quickly changed, showing gas sensitivity. The percolation threshold of the conducting film was about 5 wt%. The gas-sensing behavior of these films in solvent were the opposite of those gas-sensing materials based on a non-polar polymer matrix. A typical negative vapor coefficient (NVC) was observed when the film was placed in polar organic solvents such as methanol, ethanol, and acetone.

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“…[9][10][11][12][13] CDs are crystalline, cyclic oligosaccharides build up of D-(þ)-glucose as repeating unit. [14] They contain a hydrophobic central cavity and a hydrophilic outer surface which leads to a good water solubility.…”

Section: Introductionmentioning

confidence: 99%

Supramolecular Gels Based on Multi‐Walled Carbon Nanotubes Bearing Covalently Attached Cyclodextrin and Water‐Soluble Guest Polymers

Klink

Ritter

2008

Macromol. Rapid Commun.

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The preparation of associative networks containing multi‐walled carbon nanotubes (MWCNTs) with covalently attached cyclodextrin (CD) rings and poly[(isobutylene)‐co‐(maleic anhydride)‐co‐(maleic acid‐(4‐tert‐butylphenyl)amide)] in water is described in this study. The synthesis of CD containing MWCNTs is realized by an amidation reaction of oxidized MWCNTs with propargylamine followed by a 1,3‐dipolar cycloaddition with CD‐azide. Dispersion behavior indicated the high stability of these networks. An increase in viscosity compared to a solution of pure polymer as a cause of network formation is observed. The addition of a CD‐decomposing enzyme (taka‐diastase from Aspergillus oryzae) let the network collapse and results in sedimentation of the modified MWCNTs.magnified image

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Characterization of the Interaction of Gamma Cyclodextrin with Single-Walled Carbon Nanotubes

Cited by 107 publications

References 10 publications

Single walled carbon nanotubes induce indirect cytotoxicity by medium depletion in A549 lung cells

Single walled carbon nanotubes induce indirect cytotoxicity by medium depletion in A549 lung cells

Conducting Graphite/Cellulose Composite Film as a Candidate for Chemical Vapor-Sensing Material

Supramolecular Gels Based on Multi‐Walled Carbon Nanotubes Bearing Covalently Attached Cyclodextrin and Water‐Soluble Guest Polymers

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