single-walled carbon nanotubes – TechConnect Briefs

SWCNT TUBALL as a universal conductive additive in plastics

Ilin E.S., Bezrodny A.E., Predtechenskiy M.R., OCSiAl LLC (OCSiAl Group), US

The development of electro-conductive plastics filled with SWCNTs is demonstrated. A number of different plastics filled with TUBALLTM such as polyethylene, polypropylene, ABS-plastic, polystyrene etc. exhibit electrical resistance in the range of 10^8-10^4 Ω*cm. The [...]

Separation and ink formulation of high purity semiconducting single-walled carbon nanotubes with polymers for printed thin film transistors

Qian L., Zhao J.W., Cui Z., Suzhou Institute of Nano-tech and Nano-bionics, CN

In this work, a new approach to sorting SWCNTs based on regioregular poly(3-dodecylthiophene) (rr-P3DDT) has been reported. Effective separation of semiconducting-SWCNTs has been demonstrated by tuning the types of solvent, temperature and centrifugation rate. Figure [...]

Toxicological effects of functionalized single-walled carbon nanotubes (SWCNTs) on embryonic zebrafish (Danio rerio)

Felix L., Martinez-Rubi Y., Simard B., Goss G., University of Alberta, CA

Since their discovery in 1993, single-walled carbon nanotubes (SWCNTs) have played an integral role in nanotechnology and have been extensively studied due to their unique structural, electrical and mechanical properties. Chemical functionalization and coating of [...]

Novel Approach using SWCNT as a Mechanism of Toxicity on Fungal and Bacterial Cells

Chaves J.S., Chaves S.J., Chaves J.S., Chaves S.J., Instituto Tecnologico de Costa Rica, CR

The overall goal of this project was to characterize the potential use of SWNTs as an effective alternative to present antimicrobial agents in dealing with drug-resistance. In this study, we look at possible mechanisms to [...]

Phase Behavior and Macroscopic Processing of Single-Walled Carbon Nanotube – Lysozyme Dispersions

Horn D.W., Davis V.A., Auburn University, US

Lysozyme (LSZ) facilitates the dispersion of single-walled carbon nanotubes (SWNT) while maintaining its’ antibacterial activity through macroscopic processing. The structural and enzymatic nature of LSZ makes possible the dispersion of SWNT for processing into macroscopic [...]

Trifunctional Epoxy – SWNTs Composites. a New Non – Covalent SWNTs Integration Approach

González-Domínguez J.M., Ansón-Casaos A., Díez-Pascual A.M., Ashrafi B., Naffakh M., Johnston A., Gómez M.A., Martínez M.T., Instituto de Carboquimica (CSIC), ES

Properly dispersing CNTs within polymers, specifically egarding epoxy matrices, is extremely difficult. A novel non-covalent functionalization technique, in which a block copolymer (Pluronic F68) is used to wrap SWNTs, has been developed combining both concepts: [...]

Effects of centrifugation on the carboxyl modified single-walled carbon nanotubes suspension

Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Paek K-K, Ju B.K., Lee B.C., Lee J.A., Lee S.M., Lee Y-H, Korea Institute of Science and Technology(KIST), KR

In this paper, the properties of supernatant samples obtained go through steps of acids oxidation and centrifugation is characterized by UV-VIS-NIR spectroscopy and Raman spectroscopy. The ultraviolet-visible-near infrared absorption spectra of each sample show the [...]

Aqueous Dispersion of Single-Walled Carbon Nanotubes by using Self-doped Polyaniline as Dispersant

Hwang J.H., Lee H.J., Lee H.S., Lee M.H., Hong M.S., Lee H.J., Lee H.S., Lee M.H., Lee H.J., Lee H.S., Lee M.H., Chonbuk National University, KR

In this research, a water-soluble self-doped polyaniline, poly(aniline N-butylsulfonate) (PAnBuS), was introduced to disperse SWNTs. Dispersion of SWNTs functionalized with PAnBuS was achieved ex-situ by simply mixing both components using ultrasonic treatment. The PAnBuS-functionalized SWNTs [...]

Osteogenic induction on single-walled carbon nanotube scaffolds

Zanello L.P., Sharma P., Corzano R., Hauschka P., University of California Riverside, US

Production of bone materials is the result of secretory activities by osteoblasts, the bone-forming cells. In the fractured and wounded bone, successful repair and/or regeneration depends on the capacity of osteoblast precursors to proliferate and [...]

Structure and Electronic Properties of “DNA-Gold-Nanotube” Systems: A Quantum Chemical Analysis

Pannopard P., Sirijaraensre J., Nokbin S., Khongpracha P., Limtrakul J., Kasetsart University, TH

The idea of chemical sensing based on molecular recognition is known as one of the most promising concepts for single-molecule detection, even though it still remains in an early developmental stage. The approach requires probes [...]