Unravelling Radicals Reactivity Towards Carbon Nanotubes Manipulation/Functionalization

Syrgiannis, Zois; Bonasera, Aurelio; Tenori, Eleonora; Prato, Maurizio

doi:10.2174/1385272819666150730220301

Cited by 3 publications

(3 citation statements)

References 104 publications

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“…For wet-type chemical cutting, strong oxidizing acids are most commonly used for cutting CNTs. − The commonly used strong oxidants include a H 2 SO 4 /HNO 3 mixture, H 2 O 2 , Caro’s acid solutions, piranha, and ammonium persulfate solution. − Under heating conditions, a strong oxidizing acid can rapidly corrode CNTs and produce short-CNTs. It is worth noting that the piranha solution plays a significant role in the field of liquid cutting of CNTs. , What is unique is that the solution temperature can control the length distribution and sidewall damage of CNTs.…”

Section: Chemical Cutting Methodsmentioning

confidence: 99%

Cutting Methods and Perspectives of Carbon Nanotubes

Dai

Wang

2021

J. Phys. Chem. C

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Short carbon nanotubes have a large potential application value in medicine, electronic devices, and composites. Nevertheless, the length of carbon nanotubes prepared is inconsistent and long, which limits the application range of carbon nanotubes. To cope with this problem, different cutting methods are used to fabricate short carbon nanotubes, which greatly improves the application of carbon nanotubes. Recently, much literature had described the cutting methods of these short carbon nanotubes. Here we attempt to sort out and summarize the relevant literature and highlight the most important advances in cutting methods and machining quality of carbon nanotubes. Special attention is paid to the most common and important physical cutting, chemical cutting, and physical/chemical cutting methods. Significantly, the physical chemistry processes of cutting single-walled carbon nanotubes and multiwalled carbon nanotubes are reviewed and discussed. Additionally, a summary chart is given for readers to understand the cutting methods, application fields, and cutting quality assessments of carbon nanotubes. These can enable researchers in this field to have a deeper understanding of the physical-chemical knowledge and application fields involved in the cutting process of carbon nanotubes. Finally, the conclusions of this paper are summarized, and the current technical challenges and future research opportunities of cutting methods based on carbon nanotubes have been prospected.

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Section: Chemical Cutting Methodsmentioning

confidence: 99%

Cutting Methods and Perspectives of Carbon Nanotubes

Dai

Wang

2021

J. Phys. Chem. C

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confidence: 99%

“…4 However, covalent functionalization may modify the sp 2 character of the carbon framework and consequently can influence their properties. 5,6 Non-covalent approaches take advantage of supramolecular interactions, where the adsorption of organic and inorganic molecules on the surface of CNTs lead to stable suspensions. 7 The possibility to recognize and sort selected types of CNTs is of prominent interest, since the electronic and optical properties strongly depend on their structural parameters (diameter and helicity).…”

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confidence: 99%

Selective Interaction of a Water Soluble Naphthalenediimide with Single-Walled Carbon Nanotubes

Syrgiannis

Rigodanza

Prato

2017

ECS J. Solid State Sci. Technol.

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Carbon Nanotubes (CNTs) are amongst the more used nanomaterials of the last decades. They have been applied to different fields, including electronics, solar cells, catalysis and nanomedicine.1,2 One of the main drawbacks for their use in most applications is the strong tendency to aggregate and the poor solubility in any solvent, organic or aqueous. Chemical functionalization is the best solution to make this material not only easier to manipulate and to handle, 3 but also more biocompatible. 4 However, covalent functionalization may modify the sp 2 character of the carbon framework and consequently can influence their properties. 5,6 Non-covalent approaches take advantage of supramolecular interactions, where the adsorption of organic and inorganic molecules on the surface of CNTs lead to stable suspensions. 7The possibility to recognize and sort selected types of CNTs is of prominent interest, since the electronic and optical properties strongly depend on their structural parameters (diameter and helicity). 8 As a consequence, a structural control of SWCNTs is required for their use, especially in electronic and optical applications. Although several methods for the selective synthesis of specific types of SWCNTs have been devised, there are still problems of size heterogeneity. Therefore, post growth separation approaches, such as density gradient ultracentrifugation, 9 electrophoresis, 10 chromatography 11 and molecule assisted selective extractions [12][13][14] are currently employed to minimize size dispersion. While the use of n-type semiconductors for selective adsorption on SWCNTs have been successfully reported, 15,16 here we discuss the non-covalent interaction of a water soluble naphthalenediimide derivative (NDI1) with SWCNTs. The naphthalenediimides are the smallest n-type semiconductor analogs in the family of rylenes.17 Their shape and rich π system makes them as good candidates for the formation of interesting hybrid materials with SWCNTs. Only a few articles employing NDIs as surfactants for CNTS have been reported. 18,19 In this work, we have used a bis-cationic NDI (Scheme 1), which can interact strongly with the scaffold of SWCNTs. This interaction appears to be selective to some types of SWCNTs, by adsorbing on the smaller diameter nanotubes. Methods NDI1with Iodide as counter anion was synthesized as reported previously. 20 The bis-chloride derivative was synthesized by following the procedure that is reported in the Supplementary Material. The hybrid with SWCNTs was prepared by using the following procedure: 3 mg of NDI1 were solubilized in 5 ml of milliQ H 2 O. 3 mg of HiPco SWCNTs (batch n. HP27-078) were dispersed in 5 ml milliQ H 2 O with the assistance of sonication (30 min). The two solutions were mixed and the resulting suspension was sonicated for further 30 min, followed by magnetic stirring (2 h). The final mixture was filtered and washed several times with H 2 O. The solid was redispersed in D 2 O and z E-mail: zsyrgiannis@units.it; prato@units.it Scheme 1. Structure of NDI1.c...

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Main Strategies for the Covalent Chemical Functionalization of Fullerenes and Carbon Nanotubes

Ménard‐Moyon¹

2018

Encyclopedia of Interfacial Chemistry

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Unravelling Radicals Reactivity Towards Carbon Nanotubes Manipulation/Functionalization

Cited by 3 publications

References 104 publications

Cutting Methods and Perspectives of Carbon Nanotubes

Cutting Methods and Perspectives of Carbon Nanotubes

Selective Interaction of a Water Soluble Naphthalenediimide with Single-Walled Carbon Nanotubes

Main Strategies for the Covalent Chemical Functionalization of Fullerenes and Carbon Nanotubes

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