Application of Chemical Force Microscopy for Finding Selective Functional Groups for Discriminating Different Electronic Type Single-Walled Carbon Nanotubes

2016 ◽  
Vol 8 (35) ◽  
pp. 23338-23347 ◽  
Author(s):  
Yilei Wang ◽  
Ya Xuan Thong ◽  
Jing Wang ◽  
Mary B. Chan-Park
Keyword(s):  
Carbon Nanotubes ◽  
Functional Groups ◽  
Single Walled Carbon Nanotubes ◽  
Force Microscopy ◽  
Single Walled Carbon ◽  
Chemical Force Microscopy ◽  
Walled Carbon Nanotubes ◽  
Chemical Force

scholarly journals Aqueous electromigration of single-walled carbon nanotubes and co-electromigration with copper ions

Nanoscale ◽  
2018 ◽  
Vol 10 (41) ◽  
pp. 19628-19637 ◽  
Author(s):  
Pavan M. V. Raja ◽  
Gibran L. Esquenazi ◽  
Kourtney D. Wright ◽  
Cathren E. Gowenlock ◽  
Bruce E. Brinson ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Ions ◽  
Functional Groups ◽  
Copper Ions ◽  
Single Walled Carbon Nanotubes ◽  
Surface Functional Groups ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

The direction of electromigration of SWCNTs in the absence of surfactant depends on the presence of catalyst residue, surface functional groups and adsorbed metal ions.

Functionalization of single-walled carbon nanotubes: Chemistry and characterization

2017 ◽  
Author(s):  
R. Graupner ◽  
F. Hauke
Keyword(s):  
Carbon Nanotubes ◽  
Nir Spectroscopy ◽  
Single Walled Carbon Nanotubes ◽  
Covalent Attachment ◽  
Spectroscopic Techniques ◽  
Force Microscopy ◽  
Single Walled Carbon ◽  
Transmission Electron ◽  
Tunnelling Microscopy ◽  
Walled Carbon Nanotubes

This article examines the chemical functionalization and structural alteration of single-walled carbon nanotubes (SWCNTs). It describes the covalent functionalization of the SWCNT framework that is the covalent attachment of functional entities onto the CNT scaffold. In particular, it considers the chemical modification and reactivity of SWCNTs in the context of the reactivity of graphite and fullerenes. It also discusses the defect and sidewall functionalization of SWCNTs, along with various techniques used in the characterization ofSWCNTs upon functionalization, namely: thermogravimetric analysis, spectroscopic techniques such as UV-Vis-NIR spectroscopy and Raman spectroscopy, and microscopic techniques like transmission electron microscopy, atomic force microscopy and scanning tunnelling microscopy.

scholarly journals Chemi- vs physisorption in the radical functionalization of single-walled carbon nanotubes under microwaves

2014 ◽  
Vol 5 ◽  
pp. 537-545 ◽  
Author(s):  
Victor Mamane ◽  
Guillaume Mercier ◽  
Junidah Abdul Shukor ◽  
Jérôme Gleize ◽  
Aziz Azizan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Functional Groups ◽  
Physical Adsorption ◽  
Reaction Times ◽  
Single Walled Carbon Nanotubes ◽  
Chemical Mechanisms ◽  
Single Walled Carbon ◽  
Chemical Grafting ◽  
Grafting From ◽  
Walled Carbon Nanotubes

The effect of microwaves on the functionalization of single-walled carbon nanotubes (SWNTs) by the diazonium method was studied. The usage of a new approach led to the identification of the strength of the interaction (physical or chemical) between the functional groups and the carbon nanotube surface. Moreover, the nature (chemical formula) of the adsorbed/grafted functional groups was determined. According to thermogravimetric analysis coupled with mass spectrometry and Raman spectroscopy, the optimal functionalization level was reached after 5 min of reaction. Prolonged reaction times can lead to undesired reactions such as defunctionalization, solvent addition and polymerization of the grafted functions. The strength (chemi- vs physisorption) of the bonds between the grafted functional groups and the SWNTs is discussed showing the occurrence of physical adsorption as a consequence of defunctionalization after 15 min of reaction under microwaves. Several chemical mechanisms of grafting could be identified, and it was possible to distinguish conditions leading to the desired chemical grafting from those leading to undesired reactions such as physisorption and polymerization.

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