Strategy for High Concentration Nanodispersion of Single-Walled Carbon Nanotubes with Diameter Selectivity

2009 ◽  
Vol 113 (23) ◽  
pp. 10044-10051 ◽  
Author(s):  
Chandan Biswas ◽  
Ki Kang Kim ◽  
Hong-Zhang Geng ◽  
Hyeon Ki Park ◽  
Seong Chu Lim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
High Concentration ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

scholarly journals Chromatic Conductive Polymer Nanocomposites of Poly (p-Phenylene Ethynylene)s and Single-Walled Carbon Nanotubes

2021 ◽  
Vol 5 (6) ◽  
pp. 158
Author(s):  
Shanju Zhang ◽  
Uwe H. F. Bunz ◽  
David G. Bucknall
Keyword(s):  
Carbon Nanotubes ◽  
Conductive Polymer ◽  
Single Walled Carbon Nanotubes ◽  
Nanocomposite Films ◽  
High Mass ◽  
Phenylene Ethynylene ◽  
High Concentration ◽  
Visible Absorption ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

We report on dispersions and thin films of chromatic conductive nanocomposites of poly(p-phenylene ethynylene)s (PPEs) and single-walled carbon nanotubes (SWNTs) generated via solution mixing. The linear, conjugated PPEs with dialkyl- and dialkyloxy-side chain groups are shown to debundle and disperse high concentration (up to 2.5 mg/mL) SWNTs in various organic solvents. The solubilization of SWNTs and PPE wrapping is accompanied with the change in the solution color. Ultraviolet visible absorption spectra of nanocomposite solutions demonstrate a new absorption peak at a higher wavelength, supporting the observed chromatism. Fluorescence spectra of nanocomposite solutions display significant quenching of the fluorescence intensity and the Stern–Volmer model is used to analyze fluorescence quenching. Electron microscopy of the chromatic solid films of high mass fraction PPE/SWNT nanocomposites obtained by vacuum filtration reveals the debundled SWNTs in the PPE matrix. The tensile strength and Young’s modulus of these PPE/SWNT nanocomposite films are as high as 150 MPa and 15 GPa, respectively. The composite films exhibit remarkably high conductivities, ranging from ~1000 S/m to ~10,000 S/m for 10 wt% and 60 wt% SWNT nanocomposites, respectively.

scholarly journals Bundle Size Engineering of Single-Walled Carbon Nanotubes on Silica Nanoparticles

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Deok Min Seo ◽  
Myung Gwan Hahm ◽  
Young Lae Kim
Keyword(s):  
Carbon Nanotubes ◽  
Silica Nanoparticles ◽  
Cobalt Catalyst ◽  
Single Walled Carbon Nanotubes ◽  
Ethanol Solution ◽  
High Concentration ◽  
Cobalt Clusters ◽  
Single Walled Carbon ◽  
High Concentration Solution ◽  
Walled Carbon Nanotubes

Small and large single-walled carbon nanotubes (SWCNTs) bundles from different-sized cobalt catalyst clusters have been synthesized and prepared through chemical vapor deposition (CVD) method by using Co-acetate ethanol solution with silica nanoparticles. By controlling concentration of Co-acetate ethanol solution (0.2 wt% and 0.4 wt%), various sizes and types of bundle of SWCNTs are grown on the silica nanoparticle substrates. Synthesized SWCNT’s diameter ranged from 0.92 nm to 1.63 nm, and chirality of SWCNTs and their electronic property from high concentration solution show diverse characteristics. In high concentration solution, the large number of cobalt clusters is induced to merge on the surface of silica nanoparticles and then lots of nucleation points are provided by cobalt clusters for growth of SWNTs. These results give us a promising path to selectively synthesize various types of SWCNTs with different shapes of merged cobalt catalyst. Engineering bundle sizes of SWCNTs can be promising key for diverse applications of carbon nanotubes.

Lyotropic Liquid-Crystalline Solutions of High-Concentration Dispersions of Single-Walled Carbon Nanotubes with Conjugated Polymers

Small ◽  
2009 ◽  
Vol 5 (9) ◽  
pp. 1019-1024 ◽  
Author(s):  
Hang Woo Lee ◽  
Wei You ◽  
Soumendra Barman ◽  
Sondra Hellstrom ◽  
Melburne C. LeMieux ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Conjugated Polymers ◽  
Liquid Crystalline ◽  
Single Walled Carbon Nanotubes ◽  
High Concentration ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

High concentration bolometric system with single-walled carbon nanotubes (SWCNT) absorber

2020 ◽  
Vol 31 (12) ◽  
pp. 125202
Author(s):  
Maranatha Andalis ◽  
May Angelu Madarang ◽  
Yuki Kuwahara ◽  
Gail Tolentino ◽  
Ralph Adrian Paragas ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
High Concentration ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Purity Evaluation of Single-Walled Carbon Nanotubes Using Thermogravimetric Analysis

2013 ◽  
Vol 51 (2) ◽  
pp. 137-144
Author(s):  
Naesung Lee ◽  
Jeung Choon Goak ◽  
Tae Yang Kim ◽  
Jongwan Jung ◽  
Young-Soo Seo ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermogravimetric Analysis ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Purity Evaluation ◽  
Walled Carbon Nanotubes
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