scholarly journals Characterizations of enriched metallic single-walled carbon nanotubes in polymer composite

2004 ◽  
Vol 856 ◽  
Author(s):  
Bin Chen ◽  
Jing Li ◽  
Yijiang Lu ◽  
Martin Cinke ◽  
Dyng Au ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
Single Walled Carbon Nanotubes ◽  
Electronic Density ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Structure Changes ◽  
Anisotropic Interactions ◽  
Polarized Raman ◽  
Walled Carbon Nanotubes

ABSTRACTWe characterize the electric properties of single-walled carbon nanotube (SWNT) dispersed in the polymethyl methacrylate (PMMA) composites. In the melt-blended sample, the SWNTs – originally semiconducting – became predominantly metallic. The interaction of the PMMA and SWNT is investigated by the polarized Raman studies. The structure changes in the PMMA and SWNT shows that the anisotropic interactions play important role in SWNT electronic density of states (DOS) changes. The increased metallic SWNT percentage is confirmed by the conductivity and dielectric constant measurements of composite and neat PMMA.

scholarly journals Supramolecular structures of terbium(iii) porphyrin double-decker complexes on a single-walled carbon nanotube surface

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 28135-28145
Author(s):  
Ahmed I. A. Abd El-Mageed ◽  
Takuji Ogawa
Keyword(s):  
Carbon Nanotubes ◽  
Scanning Probe Microscopy ◽  
Single Walled Carbon Nanotubes ◽  
Supramolecular Structures ◽  
Scanning Probe ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Double Decker ◽  
Walled Carbon Nanotubes ◽  
First Time

For the first time, using scanning probe microscopy, the supramolecular structures of terbium porphyrin double-decker complexes were observed on single-walled carbon nanotubes surfaces, where the molecules formed a well-ordered self-assembled array.

Highly efficient thermophones based on freestanding single-walled carbon nanotube films

2019 ◽  
Vol 4 (5) ◽  
pp. 1158-1163 ◽  
Author(s):  
Stepan A. Romanov ◽  
Ali E. Aliev ◽  
Boris V. Fine ◽  
Anton S. Anisimov ◽  
Albert G. Nasibulin
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
State Of The Art ◽  
Single Walled Carbon Nanotubes ◽  
The State ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Highly Efficient ◽  
Art Performance ◽  
Walled Carbon Nanotubes

We present the state-of-the-art performance of air-coupled thermophones made of thin, freestanding films of randomly oriented single-walled carbon nanotubes (SWCNTs).

scholarly journals The Long-Term Fate and Toxicity of PEG-Modified Single-Walled Carbon Nanotube Isoliquiritigenin Delivery Vehicles in Rats

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Bo Han ◽  
Mingming Zhang ◽  
Ting Tang ◽  
Qiusheng Zheng ◽  
Keyu Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
Single Walled Carbon Nanotubes ◽  
Blood Clearance ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Tissue Sections ◽  
Covalently Linked ◽  
Walled Carbon Nanotubes

Oxidized single-walled carbon nanotubes (o-SWNTs) was modified by covalently and noncovalently linking PEG to the o-SWNTs. The influence of oxidation time, PEG molecular weight, and type of PEG linkage on the blood clearance time of PEG-modified single-walled carbon nanotubes (SWNTs) was investigated. The toxicity profile of SWNTs covalently linked to PEG (c-PEG-o-SWNTs) in rats has also been determined. The pharmacokinetics of c-PEG-o-SWNTs in rats and their distribution in vital organs were monitored by Raman spectroscopy, and the blood clearance of homogenate isoliquiritigenin (ISL) was determined by HPLC. Photos of tissue and tissue sections were taken to evaluate the toxicity of c-PEG-o-SWNTs. We found that SWNTs which were covalently modified with PEG and have a molecular weight of 3500 had the longest blood clearance half-lives. However, SWNTs were toxic to the kidneys and the hearts. The high renal clearance of long-term fate SWNTs may occur because of impaired kidney filtration function. Therefore, we assume that while researchers study the long-term fate of SWNTs, the toxicity of SWNTs also needs to be taken into account.

Photochemical generation of bis-hexahapto chromium interconnects between the graphene surfaces of single-walled carbon nanotubes

2015 ◽  
Vol 2 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Aron Pekker ◽  
Mingguang Chen ◽  
Elena Bekyarova ◽  
Robert C. Haddon
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Photochemical Generation ◽  
Carbon Nanotube Junctions ◽  
Walled Carbon Nanotubes

The linkage of single-walled carbon nanotube junctions by the photochemistry of organometallic chromium reagents produces dramatic increases in network conductivity.

Excitonic transition energies in single-walled carbon nanotubes: Dependence on environmental dielectric constant

2007 ◽  
Vol 244 (11) ◽  
pp. 4002-4005 ◽  
Author(s):  
Yutaka Ohno ◽  
Shinya Iwasaki ◽  
Yoichi Murakami ◽  
Shigeru Kishimoto ◽  
Shigeo Maruyama ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
Single Walled Carbon Nanotubes ◽  
Transition Energies ◽  
Single Walled Carbon ◽  
Excitonic Transition ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes as optical probes for bio-sensing and imaging

2017 ◽  
Vol 5 (32) ◽  
pp. 6511-6522 ◽  
Author(s):  
Jing Pan ◽  
Feiran Li ◽  
Jong Hyun Choi
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Biomedical Imaging ◽  
Single Walled Carbon Nanotubes ◽  
Optical Probes ◽  
Biomolecular Sensing ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

A review on the applications of single-walled carbon nanotube photoluminescence in biomolecular sensing and biomedical imaging.

Chemical structures and physical properties of vanadium oxide films modified by single-walled carbon nanotubes

2016 ◽  
Vol 18 (3) ◽  
pp. 1422-1428 ◽  
Author(s):  
Qiong He ◽  
Xiangdong Xu ◽  
Meng Wang ◽  
Minghui Sun ◽  
Yadong Jiang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Physical Properties ◽  
Vanadium Oxide ◽  
Composite Films ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Chemical Structures ◽  
Walled Carbon Nanotubes

A series of vanadium oxide (VOx)–single-walled carbon nanotube (SWCNT) composite films with different SWCNT concentrations were prepared and systematically investigated. The critical SWCNT concentrations for modification of VOx films were experimentally deduced.

Aligned fluorinated single-walled carbon nanotubes as a transmission channel towards attenuation of broadband electromagnetic waves

2018 ◽  
Vol 6 (35) ◽  
pp. 9399-9409 ◽  
Author(s):  
Yang Liu ◽  
Yichun Zhang ◽  
Cheng Zhang ◽  
Benyuan Huang ◽  
Xu Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electromagnetic Waves ◽  
Single Walled Carbon Nanotubes ◽  
Transmission Channel ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Strong Electrostatic Interaction ◽  
Walled Carbon Nanotubes ◽  
Carbon Nanotube Networks

Highly fluorinated single-walled carbon nanotubes tend to be oriented under stress due to strong electrostatic interaction allowing directional propagation and then effective attenuation of electromagnetic waves by pristine single-walled carbon nanotube networks.

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