Water-soluble single-walled carbon nanotubes via noncovalent functionalization by a rigid, planar and conjugated diazo dye

Hu, Chengguo; Chen, Zilin; Shen, Aiguo; Shen, Xin‐Cheng; Li, Jie

doi:10.1016/j.carbon.2005.09.003

Cited by 113 publications

(82 citation statements)

References 38 publications

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“…The annually increasing production and utilization of this kind of nano-material will inevitably result in the introduction of CNTs to the environment [14]. Especially, in recent years, there is an increasing interest in preparation and application of aqueous CNT dispersions [15][16][17][18][19][20]. With the development and appli-cation of CNT dispersions, the stabilized CNTs will inevitably be discharged in the environment.…”

Section: Introductionmentioning

confidence: 99%

Aqueous stability of oxidized carbon nanotubes and the precipitation by salts

Peng

Jia

Gong

et al. 2009

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Aqueous stability of oxidized carbon nanotubes and the precipitation by salts

Peng

Jia

Gong

et al. 2009

Journal of Hazardous Materials

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“…It is therefore possible to form a non-covalent pi-pi interaction between CR molecules and the graphene surface of carbon nanotubes. Reports can be found in literature on the interaction of CR with carbon nanotubes [28][29][30][31] and the surface of graphene oxide [32,33].…”

Section: The Interaction Of Congo Red With Carbon Nanotubesmentioning

confidence: 99%

“…Hu C. et al [28] describe a complex of single-walled carbon nanotubes (SWNT) with CR (SWNT-CR), with water solubility of up to 3.5 mg/mL. The described complex was formed by prolonged grinding of SWNT and CR in the agate mortar, followed by drying.…”

Section: The Interaction Of Congo Red With Carbon Nanotubesmentioning

confidence: 99%

Congo Red Interactions with Single-Walled Carbon Nanotubes

Jagusiak

Piekarska

Chłopaś

et al. 2017

Self-Assembled Molecules – New Kind of Protein Ligands

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A new method of dispersion of single-wall carbon nanotubes (SWNT) in aqueous solution using supramolecular compounds is proposed in this chapter. The described system consists of SWNT overlaid by Congo red. SWNT are formed from a rolled layer of graphene, providing a large surface area for binding compounds with planar, aromatic structures (including drugs). Congo red is able to associate with proteins in the form of supramolecular, ribbon-like structures, and may bind various drugs by intercalation.The study reveals strong interactions between Congo red and the surface of SWNT. The authors' aim was to explain the mechanism driving this interaction. Spectral analysis of the SWNT-CR complex, effects of sonication on CR binding, microscopic imaging and molecular modelling analyses are all discussed. Results indicate that binding of supramolecular Congo red to the surface of nanotubes is based on face-to-face stacking. Having attached itself to the surface of a nanotube, a dye molecule may attract other similarly oriented molecules, giving rise to a protruding supramolecular appendage. This explains the high affinity of CR for nanotubes and the resulting system's capability to bind drugs.Analysis of complexes formed by SWNT-CR with the model drug (DOX) and with other planar compounds (EB, TY) indicates that it may be possible to construct complexes capable of binding multiple compounds simultaneously.

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“…Generally, the planar structure of the dye facilitates interaction with carbon nanostructures, such as carbon nanotubes. 33,34 Such a shift of the absorption maximum is attributed to the interaction between the porphyrin and GO sheet by O-O stacking and electrostatic interaction.…”

confidence: 99%

A Photoinduced Electron Transfer System by Graphene Oxide Non-covalently Linked Porphyrin Antennae in Water

et al. 2015

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Non-covalent interacting porphyrin/Graphene Oxide (GO) nanohybrids were formed in water and confirmed by TEM, Raman, FT-IR, XRD, UV-vis and fluorescence spectroscopy. The binding constant between porphyrin and GO is 2.38 × 10 3 L mol −1 calculated by Benesi-Hildebrand equation based on absorbance plot, which confirmed a robust porphyrin/GO nanohybrid formation. Fluorescence of porphyrin was effectively quenched by GO indicated the efficient photoinduced electron transfer (PET) from porphyrin moieties to GO, which porphyrin acts as energy absorbing and electron transferring antennae and GO serves as an efficient electron acceptor of the system. The photoelectrical response measurements of porphyrin/GO nanohybrid showed a rapid and reversible on/off photovoltage and photocurrent by the alternative white light. The PET from porphyrin to GO is energetically favorable deduced by calculating free Gibbs energy. Non-covalent porphyrin/GO nanohybrid may be used as photovoltaic conversion materials for photoelectronic applications.

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Water-soluble single-walled carbon nanotubes via noncovalent functionalization by a rigid, planar and conjugated diazo dye

Cited by 113 publications

References 38 publications

Aqueous stability of oxidized carbon nanotubes and the precipitation by salts

Aqueous stability of oxidized carbon nanotubes and the precipitation by salts

Congo Red Interactions with Single-Walled Carbon Nanotubes

A Photoinduced Electron Transfer System by Graphene Oxide Non-covalently Linked Porphyrin Antennae in Water

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