| Polyglycerol-Derived Amphiphiles for the Solubilization of Single-Walled Carbon Nanotubes in Water: A Structure-Property Study. | |
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MedLine Citation:
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PMID: 22113937 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A series of nonionic amphiphiles derived from polyglycerol dendrons were studied for their ability to solubilize and isolate single-walled carbon nanotubes. The amphiphiles possessed differently sized polar head groups, hydrophobic tail units, and various aromatic and non-aromatic groups between the head and tail groups. Absorbance analysis revealed that amphiphiles with anchor groups derived from pyrene were far inferior to those that possessed simple linear aliphatic tail groups. Absorbance and near-infrared fluorescence analyses revealed a weak dependence on the dendron size of the head group, but a strong positive trend in suspended nanotube density and fluorescence intensity for amphiphiles with longer tail units. Variations in the moieties linking the head and tail groups led to a range of effects on the suspensions, with linkers imparting flexibility and a bent shape that gave improved performance overall. This was illustrated most dramatically by a pair of benzamide-containing amphiphiles, the para isomer of which showed evidence in the fluorescence data of increased nanotube aggregate formation when compared with the meta isomer. In addition, statistical AFM was used to illustrate more directly the microscopic differences between amphiphiles that were effective at nanotube bundle disruption and those that were not. |
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Authors:
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Chris S Popeney; Antonio Setaro; Radu-Cristian Mutihac; Pascal Bluemmel; Britta Trappmann; Jonathan Vonneman; Stephanie Reich; Rainer Haag |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-23 |
Journal Detail:
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Title: Chemphyschem : a European journal of chemical physics and physical chemistry Volume: - ISSN: 1439-7641 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2011-11-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100954211 Medline TA: Chemphyschem Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, 14195 Berlin (Germany), Fax: (+49) 30 838 53357. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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