Magnetic Cobalt[0]-graphene Nanospheres

Schaetz, Alexander; Stark, Wendelin J.; Grass, Robert N.

doi:10.1002/047084289x.rn01393

Cited by 2 publications

(3 citation statements)

References 24 publications

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“…Each functionality is covalently bound to the surface of the carbon surface and cannot be washed off or desorbed. 43 The presence of the benzylamine functionality can be further proven by the FT-IR spectrum with peaks characteristic of benzylamine (Supporting Information Figure S2). 37 Affinity SALDI-MS Using Modified and Unmodified CoC−NH 2 Nanomagnets.…”

Section: ■ Results and Discussionmentioning

confidence: 95%

“…Functionalization of these carbon coated nanomagnets with 4-aminobenzylamine via a diazonium chemistry approach yields benzylamine functionalized nanomagnets with a functional loading of ∼0.1 mmol/g (0.16 wt % N, 6 wt % C in microanalysis). Each functionality is covalently bound to the surface of the carbon surface and cannot be washed off or desorbed . The presence of the benzylamine functionality can be further proven by the FT-IR spectrum with peaks characteristic of benzylamine (Supporting Information Figure S2) …”

Section: Resultsmentioning

confidence: 98%

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Functionalized Graphene-Coated Cobalt Nanoparticles for Highly Efficient Surface-Assisted Laser Desorption/Ionization Mass Spectrometry Analysis

et al. 2012

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Graphene-coated cobalt nanoparticles surface-functionalized with benzylamine groups (CoC-NH(2) nanomagnets) were shown to effectively enrich analytes for surface-assisted laser desorption/ionization mass spectrometry (affinity SALDI-MS) analysis. These CoC-NH(2) nanomagnets are highly suited for use with affinity SALDI-MS because their mean diameter of 30 nm, high specific surface area of 15 m(2) g(-1), and high-strength saturation magnetization of 158 emu g(-1) led to efficient extraction of analytes by magnetic separation, which in turn enabled excellent SALDI-MS performance. Surface modification of CoC nanomagnets with benzylamine groups increased the yield of peptide ions and decreased fragmentation of benzylpyridinium ions, so-called "thermometer ions" formed through soft ionization. The CoC-NH(2) nanomagnets were used to extract perfluorooctanesulfonate from large volumes of aqueous solutions by magnetic separation, which was identified directly by SALDI-MS analysis with high sensitivity even at the sub-part-per-trillion level (∼0.1 ng/L). The applicability of CoC-NH(2) nanomagnets in conjunction with SALDI-MS for the enrichment and detection of pentachlorophenol, bisphenol A, and polyfluorinated compounds (PFCs) with varying chain length, which are environmentally significant compounds, as well as small drugs, was also evaluated.

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Section: ■ Results and Discussionmentioning

confidence: 95%

Section: Resultsmentioning

confidence: 98%

Functionalized Graphene-Coated Cobalt Nanoparticles for Highly Efficient Surface-Assisted Laser Desorption/Ionization Mass Spectrometry Analysis

et al. 2012

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“…By the addition of acetylene and subsequently modifying the flame synthesis conditions, however, metallic MNPs are stabilized with a carbon layer as shown using cobalt particles [19]. Carbon-coated metallic MNPs are air-, solvent- and in a wide range pH-stable [20]. Another significant advantage of carbon layers is the possibility to perform chemical modification in order to covalently bind functional groups.…”

Section: Magnetic Nanoparticles: Materials and Synthesismentioning

confidence: 99%

Biochemical functionality of magnetic particles as nanosensors: how far away are we to implement them into clinical practice?

2019

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Magnetic nanosensors have become attractive instruments for the diagnosis and treatment of different diseases. They represent an efficient carrier system in drug delivery or in transporting contrast agents. For such purposes, magnetic nanosensors are used in vivo (intracorporeal application). To remove specific compounds from blood, magnetic nanosensors act as elimination system, which represents an extracorporeal approach. This review discusses principles, advantages and risks on recent advances in the field of magnetic nanosensors. First, synthesis methods for magnetic nanosensors and possibilities for enhancement of biocompatibility with different coating materials are addressed. Then, attention is devoted to clinical applications, in which nanosensors are or may be used as carrier- and elimination systems in the near future. Finally, risk considerations and possible effects of nanomaterials are discussed when working towards clinical applications with magnetic nanosensors.

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Magnetic Cobalt[0]-graphene Nanospheres

Cited by 2 publications

References 24 publications

Functionalized Graphene-Coated Cobalt Nanoparticles for Highly Efficient Surface-Assisted Laser Desorption/Ionization Mass Spectrometry Analysis

Functionalized Graphene-Coated Cobalt Nanoparticles for Highly Efficient Surface-Assisted Laser Desorption/Ionization Mass Spectrometry Analysis

Biochemical functionality of magnetic particles as nanosensors: how far away are we to implement them into clinical practice?

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