Laser desorption–ionization time of flight mass spectrometry of various carbon materials

Šedo, Ondřej; Alberti, Milan; Janča, Jan; Havel, Josef

doi:10.1016/j.carbon.2005.10.025

Cited by 31 publications

(21 citation statements)

References 21 publications

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“…It should be noted that direct connections have been found by the IRC method between TS1 and IR and also between TS1 and IM1 without intermediates and transition states. No intermediate has been found with changed for sp 3 hybridization of carbon atom typical of the fragmentation of neutral С 60 molecule (IM2, see Fig. 8).…”

Section: Laser Desorption/ionization Of Fullerenes: Experimental and mentioning

confidence: 92%

“…Moreover, this method allows new fullerene-like forms of carbon to be created which were absent in the initial specimen. As was marked in work [3], there are the principal differences between mass spectra obtained for different allotropic forms of carbon. As follows from the analysis of the mass spectra of graphite and diamond obtained by the method of postionic-source decay, their laser desorption/ionization does not give rise to the formation of particles with fullerene-like structures.…”

Section: Introductionmentioning

confidence: 93%

See 1 more Smart Citation

Laser Desorption/Ionization of Fullerenes: Experimental and Theoretical Study

Pokrovskiy¹,

Grebenyuk²,

Demianenko³

et al. 2015

Him. Fiz. Tehnol. Poverhni

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Section: Laser Desorption/ionization Of Fullerenes: Experimental and mentioning

confidence: 92%

Section: Introductionmentioning

confidence: 93%

Laser Desorption/Ionization of Fullerenes: Experimental and Theoretical Study

Pokrovskiy¹,

Grebenyuk²,

Demianenko³

et al. 2015

Him. Fiz. Tehnol. Poverhni

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“…We also evaluated the integrity of PL-aPEG adsorbed onto NTs through MALDI mass spectrometry. The MALDI mass spectrum of pristine NTs exhibited peaks in the range of mass-charge ratio range lower than 1000 Da, 25 whereas that of PL-aPEG was characterized by a discrete distribution of peaks in the 2,300-3,400 Da mass-charge ratio ( Fig. 2(A)).…”

Section: Preparation and Physico-chemical Characterization Of Pegylatmentioning

confidence: 99%

Carbon Nanotube-Based Nanocarriers: The Importance of Keeping It Clean

Delogu

Stanford²,

Santelli³

et al. 2010

J. Nanosci. Nanotech.

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Nanotechnology-introduced materials have promising applications as nanocarriers for drugs, peptides, proteins and nucleic acids. Several studies showed that the geometry (shape and size) and chemical properties of nanoparticles affect the kinetics and pathways of cellular uptake and their intracellular trafficking and signaling. Accurate physico-chemical characterization of nanoparticles customarily precedes their use in cell biology and in vivo experiments. However, a fact that is easily overlooked is that nanomaterials decorated with organic matter or resuspended in aqueous buffers can be theoretically contaminated by fungal and bacterial microorganisms. While investigating the effects of extensively characterized PEGylated carbon nanotubes (PNTs) on T lymphocyte activation, we demonstrated bacterial contamination of PNTs, which correlated with low reproducibility and artifacts in cell signaling assays. Contamination and artifacts were easily eliminated by preparing the materials in sterile conditions. We propose that simple sterile preparation procedures should be adopted and sterility evaluation of nanoparticles should be customarily performed, prior to assessing nanoparticle intracellular internalization, trafficking and their effects on cells and entire organisms.

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“…Carbon materials, including graphene and carbon nanotube have also been used as a good matrix for analysis of small molecules by MALDI MS [16][17][18][19][20][21]. At the same time, the improvements in both ionization methods and MS instruments accelerate the analysis and characterization of carbon materials [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

“…The same group has also observed the large odd-numbered carbon clusters anions of C from the mass spectrum of a toluene extract of graphitic soot [3]. Sedo et al have studied the laser desorption-ionization mass spectra of several kinds of materials, including graphite, glassy carbon, carbon nanotubes, synthetic diamond, and diamond-like thin layers [23]. Although carbon cluster ions from C 2 to C 300 can be found in their positive ion products, only C À n ions with n≤15 can be identified in their negative mass spectra.…”

Section: Introductionmentioning

confidence: 99%

Large Carbon Cluster Anions Generated by Laser Ablation of Graphene

Kong

Zhang

et al. 2011

J. Am. Soc. Mass Spectrom.

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The formation of large even-numbered carbon cluster anions, C À n , with n up to 500 were observed in the mass spectra generated by laser ablation of graphene and graphene oxide, and the signal intensity of the latter is much weaker than that of the former. The cluster distributions generated from graphene can be readily altered by changing the laser energy and the accumulation period in the FT -ICR cell. can be observed by the process of collisional activation with N 2 gas for most cluster ions, several cluster anions can lose units of C 2 , C 4 , C 6 or C 8 in their collision process. The differences in their dissociation kinetics and structures require further calculations and experimental studies.

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Laser desorption–ionization time of flight mass spectrometry of various carbon materials

Cited by 31 publications

References 21 publications

Laser Desorption/Ionization of Fullerenes: Experimental and Theoretical Study

Laser Desorption/Ionization of Fullerenes: Experimental and Theoretical Study

Carbon Nanotube-Based Nanocarriers: The Importance of Keeping It Clean

Large Carbon Cluster Anions Generated by Laser Ablation of Graphene

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