Charge-transfer behavior of polyaniline single wall carbon nanotubes nanocomposites monitored by resonance Raman spectroscopy

2010 ◽  
Vol 41 (12) ◽  
pp. 1587-1593 ◽  
Author(s):  
Gustavo M. do Nascimento ◽  
Tilana B. Silva ◽  
Paola Corio ◽  
Mildred S. Dresselhaus
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Charge Transfer ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Transfer Behavior

Boron, nitrogen and phosphorous substitutionally doped single-wall carbon nanotubes studied by resonance Raman spectroscopy

2009 ◽  
Vol 246 (11-12) ◽  
pp. 2432-2435 ◽  
Author(s):  
I. O. Maciel ◽  
J. Campos-Delgado ◽  
M. A. Pimenta ◽  
M. Terrones ◽  
H. Terrones ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Boron Nitrogen

scholarly journals Double resonance Raman spectroscopy of single-wall carbon nanotubes

2003 ◽  
Vol 5 ◽  
pp. 157-157 ◽  
Author(s):  
R Saito ◽  
A Grüneis ◽  
Ge G Samsonidze ◽  
V W Brar ◽  
G Dresselhaus ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Resonance Raman Spectroscopy ◽  
Double Resonance ◽  
Resonance Raman ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon

Charge Transfer Dynamics in Single-Wall Carbon Nanotubes Mat: In Situ Raman Spectroscopy

2003 ◽  
Vol 785 ◽  
Author(s):  
S. Gupta ◽  
M. Hughes ◽  
A.H. Windle ◽  
J. Robertson
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Charge Transfer ◽  
Bond Length ◽  
Mechanical Response ◽  
Radial Breathing Mode ◽  
Single Wall Carbon Nanotubes ◽  
In Situ Raman Spectroscopy ◽  
Single Wall Carbon

ABSTRACTCarbon nanotubes-based actuator has been investigated using in situ Raman spectroscopy in order to understand the actuation mechanism and to determine associated parameters. We built an actuator from a sheet of single-wall carbon nanotubes (SWNT mat) and studied in several alkali metal (Li, Na, and K) and alkaline earth (Ca) halide solutions. Since Raman can detect changes in C-C bond length: the radial breathing mode (RBM) at ∼190 cm-1 varies inversely with the nanotube diameter and the G band at ∼1590 cm-1 varies with the axial bond length, the variation of bonding was monitored with potential. In addition, the intensities of both the modes vary with either emptying/depleting or filling of the bonding and antibonding states due to electrochemical charge injection. We discuss the variation of intensity/frequency providing valuable information on the dynamics of charge transfer on the SWNT mat surface. We found the in-plane microscopic strain (∼ -0.25%) and the charge transfer per carbon atom (fc ∼ -0.005) as an upper bound for the electrolytes used. It is demonstrated that though the present analyses does comply with the proposition made earlier, but the quantitative estimates of the associated parameters are significantly lower if compared with those of reported values for carbon nanotubes. Moreover, the extent of variation (i.e. coupled electro-chemo-mechanical response) does depend upon the type of counter-ion used. The cyclic voltammetry (CV) is also described briefly.

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