Optical and electrochemical responses of an anthrax biomarker based on single-walled carbon nanotubes covalently loaded with terbium complexes.

An effective single-walled carbon nanotube (SWNT) covalently loaded with unsaturated terbium emissive material was designed for specific and rapid (2-3 s) detection of calcium dipicolinate (CaDPA) (detection limit 1 μM). The nanoprobe was successfully assembled onto electrodes and its sensing abilities were investigated through electrochemical measurement. Cyclic voltammetry curves were selectively responsive to calcium dipicolinate compared with benzoic acid, o-phthalic acid and m-phthalic acid. This novel material provides dual opto-electrochemical recognition of the anthrax biomarker CaDPA.
AuthorsChaoliang Tan, Qianming Wang, Cheng Cheng Zhang
JournalChemical communications (Cambridge, England) (Chem Commun (Camb)) Vol. 47 Issue 46 Pg. 12521-3 (Dec 14 2011) ISSN: 1364-548X [Electronic] England
PMID22027893 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Biomarkers
  • Nanotubes, Carbon
  • Organometallic Compounds
  • Picolinic Acids
  • Terbium
  • dipicolinic acid
  • Bacillus anthracis (chemistry)
  • Biomarkers (analysis, chemistry)
  • Electrochemistry (methods)
  • Nanotubes, Carbon (chemistry)
  • Optical Processes
  • Organometallic Compounds (chemistry)
  • Picolinic Acids (analysis, chemistry)
  • Terbium (chemistry)

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