Two-Dimensional Diffusion-Ordered NMR Spectroscopy as a Tool for Monitoring Functionalized Carbon Nanotube Purification and Composition

Marega, Riccardo; Aroulmoji, V.; Bergamin, Massimo; Feruglio, Luigi; Dinon, Francesca; Bianco, Alberto; Murano, Erminio; Prato, Maurizio

doi:10.1021/nn100257h

Cited by 27 publications

(25 citation statements)

References 69 publications

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“…[21] and Marega et al [22]. As a fifth candidate, we investigated an amine-terminated phospholipid-PEG (PL-PEG2000-NH 2 ), which is widely used as a dispersion agent for carbon nanotubes [23,24].…”

Section: Effect Of Ph On Drug Bindingmentioning

confidence: 99%

Drug loading, dispersion stability, and therapeutic efficacy in targeted drug delivery with carbon nanotubes

Heister

Neves

Lamprecht

et al. 2012

Carbon

148

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Section: Effect Of Ph On Drug Bindingmentioning

confidence: 99%

Drug loading, dispersion stability, and therapeutic efficacy in targeted drug delivery with carbon nanotubes

Heister

Neves

Lamprecht

et al. 2012

Carbon

148

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“…In a recent application, Marega et al [21] used 1 H-2D DOSY spectroscopy to monitor the functionalization and purification of a carbon nanotube-polyethylene glycol (CNT-PEG) conjugate. There have been numerous publications on the characterization of various bioconjugates using 2D NMR techniques [22,23].…”

Section: Introductionmentioning

confidence: 99%

Monitoring the functionalization of single-walled carbon nanotubes with chitosan and folic acid by two-dimensional diffusion-ordered NMR spectroscopy

Castillo

Torres

Molina

et al. 2012

Carbon

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Monitoring the functionalization of single-walled carbon nanotubes with chitosan and folic acid by two-dimensional diffusion-ordered nmr spectroscopy, Carbon (2012), doi: 10.1016/j.carbon. 2012.02.010 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Monitoring the functionalization of single-walled carbon nanotubes with chitosan and folic acid by two-dimensional diffusion-ordered nmr spectroscopy ABSTRACTA conjugate between single-walled carbon nanotubes, chitosan and folic acid has been prepared. It was characterized by diffusion ordered two-dimensional hydrogen-1 nuclear magnetic resonance and hydrogen-1 nuclear magnetic resonance spectroscopy which revealed the presence of a conjugate that was generated by the linkage between the carboxyl moiety of the folic acid and the amino group of the chitosan, which in turn was non-covalently bound to the single-walled carbon nanotubes. The obtained diffusion coefficient values demonstrated that free folic acid diffused more rapidly than the folic acid conjugated to single-walled carbon nanotubes-chitosan. The values of the proton signal of hydrogen-1 nuclear magnetic resonance spectroscopy and two-dimensional hydrogen-1 nuclear magnetic resonance spectroscopy further confirmed that the folic acid was conjugated to the chitosan, wrapping the single-walled carbon nanotubes.

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“…More quantitative information can be useful in determining the molecular weight distribution for polymers [78], the purity and composition of functionalized carbon nanotubes [79], the formation of ion pairs and quadruples [80][81][82][83], or, in the case of neutral species, of supramolecular adducts [84,85].…”

Section: = ( + ( ) • ) (8)mentioning

confidence: 99%

Characterization of Halogen Bonded Adducts in Solution by Advanced NMR Techniques

Ciancaleoni

2017

Magnetochemistry

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Abstract:In the last 20 years, a huge volume of experimental work into halogen bonding (XB) has been produced. Most of the systems have been characterized by solid state X-ray crystallography, whereas in solution the only routine technique is titration (by using 1 H and 19 F nuclear magnetic resonance (NMR), infrared (IR), ultraviolet-visible (UV-Vis) or Raman spectroscopies, depending on the nature of the system), with the aim of characterizing the strength of the XB interaction. Unfortunately, titration techniques have many intrinsic limitations and they should be coupled with other, more sophisticated techniques to provide an accurate and detailed description of the geometry and stoichiometry of the XB adduct in solution. This review will show how crucial information about XB adducts can be obtained by advanced NMR techniques, nuclear Overhauser effect-based spectroscopies (NOESY, ROESY, HOESY . . . ) and diffusion NMR techniques (PGSE or DOSY).

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Two-Dimensional Diffusion-Ordered NMR Spectroscopy as a Tool for Monitoring Functionalized Carbon Nanotube Purification and Composition

Cited by 27 publications

References 69 publications

Drug loading, dispersion stability, and therapeutic efficacy in targeted drug delivery with carbon nanotubes

Drug loading, dispersion stability, and therapeutic efficacy in targeted drug delivery with carbon nanotubes

Monitoring the functionalization of single-walled carbon nanotubes with chitosan and folic acid by two-dimensional diffusion-ordered NMR spectroscopy

Characterization of Halogen Bonded Adducts in Solution by Advanced NMR Techniques

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