Selective Interaction of a Semiconjugated Organic Polymer with Single-Wall Nanotubes

Abstract

Hybrid systems of a semiconjugated organic polymer and single-wall nanotubes have been characterized by optical absorption spectroscopy, electron microscopy, and Raman spectroscopy. It is demonstrated that solutions of the polymer are capable of suspending nanotubes indefinitely while the majority of the accompanying amorphous graphite precipitates out of solution. Electron microscopy and Raman scattering indicate that through an intercalation process, the ropes of nanotubes are destroyed, resulting in individual nanotubes being well dispersed within the polymer matrix. Moreover, Raman and absorption studies suggest that the polymer interacts preferentially with nanotubes of specific diameters or a range of diameters.

Liquid‐Phase Exfoliation of Nanotubes and Graphene

“…Various methods to provide this repulsive potential have been explored. Nanotubes have been dispersed and stabilised with the aid of specific solvents [16][17][18][19][20][21][22][23][24] , acids [25,26] , macromolecules [27][28][29][30] and surfactants [31][32][33][34] as well as through covalent functionalisation strategies [35,36] . Such systems have been characterised by a range of techniques such as atomic force microscopy [37] , infra-red photoluminescence and absorbance spectroscopy [34] , viscometry [25] , small angle neutron scattering [32] to name but a few.…”

Activation behavior and dielectric relaxation in polyvinyl alcohol and multiwall carbon nanotube composite films

“…So the PVA/CNT composites can be fabricated very easily through water, alcohol and surfactant medium [7][8][9][10][11]. In the recent past, an extensive investigation has been made to explore the properties of PVA/CNT composites [12][13][14][15][16][17][18][19][20] describing the synthesis and characterization of the PVA/CNT composites and to find their mechanical properties. Only a few works give the information regarding the electrical and dielectric properties of PVA/CNT composites.…”

Single walled carbon nanotubes induce indirect cytotoxicity by medium depletion in A549 lung cells

“…Single walled carbon nanotubes (SWCNT) interact strongly with a large range of molecular species from dyes to polysaccharides and bio-molecules (Bandyopadhyaya et al, 2002;Chambers et al, 2003;Casey et al, 2005;Dalton et al, 2000;Hedderman et al, 2004;Keogh et al, 2004;Moulton et al, 2005;Salvador-Morales et al, 2006). Spectroscopic analysis of a commercial cell culture medium, commonly used in toxicity studies, revealed significant interaction of the constituent components with SWCNT.…”