Abstract
As one of the most fundamental properties of carbon nanotubes, the electronic states of single-walled carbon nanotubes (SWNTs) have been investigated using different experimental approaches. In this study, we report a large shift in the redox potentials and band gaps of (6,5)SWNTs with a change in the solubilizer as determined by in situ photoluminescence (PL) spectroelectrochemical measurements in both aqueous and organic solvents. This shift is attributed to the change in the microenvironment around the SWNT surfaces due to interactions between the solubilizers, including a fluorene-based copolymer (PFO-Bpy) and carboxymethyl cellulose (CMC-Na), and the SWNTs, and this behaviour was proved by molecular mechanics simulations. A striking difference was also revealed in the states of the π-electrons in the sidewalls of SWNTs solubilized in different polymers, which indicates that altering the solubilizer enables tuning of the electronic states of SWNTs. The results presented are important for understanding the effects of the microenvironment on the redox states of individual (n,m)SWNTs.
| Original language | English |
|---|---|
| Pages (from-to) | 5223-5228 |
| Number of pages | 6 |
| Journal | Journal of Materials Chemistry C |
| Volume | 2 |
| Issue number | 26 |
| DOIs | |
| Publication status | Published - Jul 14 2014 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Materials Chemistry
Cite this
Microenvironment effect on the electronic potentials of individual (6,5)single-walled carbon nanotubes. / Hong, Liu; Toshimitsu, Fumiyuki; Niidome, Yasuro; Nakashima, Naotoshi.
In: Journal of Materials Chemistry C, Vol. 2, No. 26, 14.07.2014, p. 5223-5228.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Microenvironment effect on the electronic potentials of individual (6,5)single-walled carbon nanotubes
AU - Hong, Liu
AU - Toshimitsu, Fumiyuki
AU - Niidome, Yasuro
AU - Nakashima, Naotoshi
PY - 2014/7/14
Y1 - 2014/7/14
N2 - As one of the most fundamental properties of carbon nanotubes, the electronic states of single-walled carbon nanotubes (SWNTs) have been investigated using different experimental approaches. In this study, we report a large shift in the redox potentials and band gaps of (6,5)SWNTs with a change in the solubilizer as determined by in situ photoluminescence (PL) spectroelectrochemical measurements in both aqueous and organic solvents. This shift is attributed to the change in the microenvironment around the SWNT surfaces due to interactions between the solubilizers, including a fluorene-based copolymer (PFO-Bpy) and carboxymethyl cellulose (CMC-Na), and the SWNTs, and this behaviour was proved by molecular mechanics simulations. A striking difference was also revealed in the states of the π-electrons in the sidewalls of SWNTs solubilized in different polymers, which indicates that altering the solubilizer enables tuning of the electronic states of SWNTs. The results presented are important for understanding the effects of the microenvironment on the redox states of individual (n,m)SWNTs.
AB - As one of the most fundamental properties of carbon nanotubes, the electronic states of single-walled carbon nanotubes (SWNTs) have been investigated using different experimental approaches. In this study, we report a large shift in the redox potentials and band gaps of (6,5)SWNTs with a change in the solubilizer as determined by in situ photoluminescence (PL) spectroelectrochemical measurements in both aqueous and organic solvents. This shift is attributed to the change in the microenvironment around the SWNT surfaces due to interactions between the solubilizers, including a fluorene-based copolymer (PFO-Bpy) and carboxymethyl cellulose (CMC-Na), and the SWNTs, and this behaviour was proved by molecular mechanics simulations. A striking difference was also revealed in the states of the π-electrons in the sidewalls of SWNTs solubilized in different polymers, which indicates that altering the solubilizer enables tuning of the electronic states of SWNTs. The results presented are important for understanding the effects of the microenvironment on the redox states of individual (n,m)SWNTs.
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U2 - 10.1039/c4tc00495g
DO - 10.1039/c4tc00495g
M3 - Article
VL - 2
SP - 5223
EP - 5228
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
SN - 2050-7526
IS - 26
ER -