Effect of surfactant addition on the MWNT suspenzions stability in organic solvents

It is shown that multi-walled carbon nanotubes (MWNT) form stable suspensions in isopropanol solvent as a result of influence of ultra-sound in the weight range of concentrations from 0.0001% to 1% by weight. Nonionic surfactant Triton X-165 affects the microstructure of the MWNT aggregates in isopropanol, a small amount of surfac- tant increase the intervals between the aggregates and accelerate the sedimentation process. MWNT suspension in and toluene shows unstable behavior, their total precipi- tation time is less than 104 sec. Addition of 0.4% Triton X-165 to suspension of MWNT in p-xylene leads to its stabilization. Also, addition of 0.6% Triton X-165 leads to partial stabilization of suspensions of MWNT in toluene. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2061

Exciplexes of fullerene C60 with aromatic solvents

The solvent induced spectral shift method is applied to study stacking interactions between aromatic solvents molecules, such as benzene and toluene from one side, and solute fullerene C60. Ratios of high-energy transitions shifts to calculated shifts under dispersion interactions are considered. It is concluded that in contrast to aromatic molecules containing two or three rings which do not form complexes with aromatic solvents, fullerene forms exciplexes with high-energy excited states involved in more strong interactions rather than low-energy one. The higher is excited state, the stronger is interaction. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2062

Interaction between nucleoside and nucleotide with carbon nanotubes

Carbon nanotubes (CNTs) possess a number of unique properties; they are successfully applied as fillers for improving the mechanical, electric, thermophysical, and optical properties of composite materials. At present, CNTs are intensively used in the development of biosensor devices and materials designed for pharmaceutics and diagnostics. Functionalization of CNT surfaces with molecules playing important roles in biological processes, including proteinforming peptides, nucleic acids, etc., makes it possible to produce new systems capable of identifying iological objects. CNT surface can serve as a platform for the targeted transport of different molecules, including drugs (antibiotics or protein). Efficiency of this transport is governed by the unique adsorption ability of CNTs and the specific interaction of molecules with their surface. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2062