Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Am Chem Soc. 2011 Dec 7;133(48):19459-73. doi: 10.1021/ja206818n. Epub 2011 Nov 10.

Selective polycarboxylation of semiconducting single-walled carbon nanotubes by reductive sidewall functionalization.

Author information

  • 1Department of Chemistry and Pharmacy & Institute of Advanced Materials and Processes (ZMP), University of Erlangen-Nuremberg, Henkestrasse 42, 91054 Erlangen, Germany.

Abstract

The efficient and controllable synthesis, the detailed characterization, and the chemical postfunctionalization of polycarboxylated single-walled carbon nanotubes SWCNT(COOH)(n) are reported. This innovative covalent sidewall functionalization method is characterized by (a) the preservation of the integrity of the entire σ-framework of SWCNTs; (b) the possibility of achieving very high degrees of addition; (c) control of the functionalization degrees by the variation of the reaction conditions (reaction time, ultrasonic treatment, pressure); (d) the identification of conditions for the selective functionalization of semiconducting carbon nanotubes, leaving unfunctionalized metallic tubes behind; (e) the proof that the introduced carboxylic acid functionalities can serve as versatile anchor points for the coupling to functional molecules; and (f) the application of a subsequent thermal degradation step of the functionalized semiconducting tubes leaving behind intact metallic SWCNTs. Functional derivatives have been characterized in detail by means of Raman, UV-vis/nIR, IR, and fluorescence spectroscopy as well as by thermogravimetric analysis combined with mass spectrometry, atomic force microscopy, and zeta-potential measurements.

© 2011 American Chemical Society

PMID:
22035086
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Chemical Society
    Loading ...
    Write to the Help Desk