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Title: On the efficiency of bile salt for stable suspension and isolation of single-walled carbon nanotubes-spectroscopic and microscopic investigations
Authors: Lukaszczuk, P.Borowiak-Palen, E.Rümmeli, M.H.Kalenczuk, R.J.
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Issue Date: 2010
Published in: Applied Physics A: Materials Science and Processing Vol. 100 (2010), No. 2
Publisher: Berlin : Springer Verlag
Abstract: In this contribution we present a systematic study on the dispersion of SWCNTs in a water-based solution of biocompatible detergent: sodium deoxycholate (DOC). By avoiding harsh chemical conditions, which are known to damage nanotubes structure, a stable SWCNTs suspension was created. Long term stirring of the solution led to preparation of a stable transparent solution, containing welldispersed isolated SWCNTs. The as-prepared dispersion remained stable and clear for two months. Optical absorption spectroscopy was employed to measure SWCNTs suspension stability. Nanotube aggregation was evaluated through the tangential mode (G mode) present in the Raman spectrum. High-resolution transmission electronmicroscopy was employed to observe the mechanism of debundling process. © 2010 Springer-Verlag.
Keywords: Bile salts; Chemical conditions; Debundling; G-modes; High resolution; Long term; Nanotube aggregation; Optical absorption spectroscopy; Raman Spectrum; Sodium deoxycholate; Stable suspensions; Suspension stability; Systematic study; Tangential modes; Transparent solutions; Water-based solutions; Well-dispersed; Dispersions; Nanotubes; Raman spectroscopy; Single-walled carbon nanotubes (SWCN); Absorption spectroscopy
DDC: 530
License: CC BY-NC 2.0 Unported
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