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.

A Stable Thin Film from Soluble Single-Walled Carbon Nanotubes on ITO

2011 ◽  
Vol 287-290 ◽  
pp. 2443-2446
Author(s):  
Su Min Wang ◽  
Qi Guan Wang ◽  
Jian Ping Li ◽  
Hiroshi Moriyama ◽  
Wei Xing Chen
Keyword(s):  
Carbon Nanotubes ◽  
Redox Reactions ◽  
Conductive Polymer ◽  
Stable State ◽  
Single Walled Carbon Nanotubes ◽  
Organic Media ◽  
Covalent Bonds ◽  
Single Walled Carbon ◽  
Reversible Redox ◽  
Walled Carbon Nanotubes

Thin films of single-walled carbon nanotubes (SWNTs) attached to an ITO surface (SAM–ITO) self-assembled in advance from 3-aminopropyltrimethoxysilane through amide covalent bonds were prepared. The SWNTs were safely obtained via a two-step process assisted by microwave radiation, which were soluble in aqueous and organic media. However, the CV behavior of SAM–ITO in acidic aqueous systems showed unexpected oxidation signals due to redox reactions involving the defects and sidewalls of soluble functionalized SWNTs. It was found that, after a conductive polymer of polyaniline was chemically incorporated onto the surface of the SWNTs by using electropolymerization method, the CV data showed a single reversible redox couple, which indicated a more stable state.

Dithiafulvenyl-grafted phenylene ethynylene polymers as selective and reversible dispersants for single-walled carbon nanotubes

2015 ◽  
Vol 51 (1) ◽  
pp. 149-152 ◽  
Author(s):  
Karimulla Mulla ◽  
Shuai Liang ◽  
Haseena Shaik ◽  
Eyad A. Younes ◽  
Alex Adronov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Conjugated Polymers ◽  
Single Walled Carbon Nanotubes ◽  
Side Chains ◽  
Phenylene Ethynylene ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Phenylene ethynylene-based π-conjugated polymers grafted with dithiafulvenyl groups on their side chains were found to be efficient in dispersing single-walled carbon nanotubes in a selective and controllable way.

Polymeric nanocomposite films from functionalized vs suspended single-walled carbon nanotubes

Polymer ◽  
2006 ◽  
Vol 47 (15) ◽  
pp. 5323-5329 ◽  
Author(s):  
Bing Zhou ◽  
Yi Lin ◽  
Darron E. Hill ◽  
Wei Wang ◽  
L. Monica Veca ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Nanocomposite Films ◽  
Single Walled Carbon ◽  
Polymeric Nanocomposite ◽  
Walled Carbon Nanotubes

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

scholarly journals Photoelectronic properties of composite films based on conductive polymer PIDT-BT and single-walled carbon nanotubes

2019 ◽  
Vol 1 (9) ◽  
Author(s):  
Andrey N. Aleshin ◽  
Baode Zhang ◽  
Petr A. Aleshin ◽  
Vasily N. Petrov ◽  
Irina N. Trapeznikova ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Composite Films ◽  
Conductive Polymer ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

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
Sign in / Sign up

Export Citation Format

Share Document