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

Abstract

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.

• Authors: Chaoliang Tan, Qianming Wang, Cheng Cheng Zhang
• Journal: Chemical communications (Cambridge, England) (Chem Commun (Camb)) Vol. 47 Issue 46 Pg. 12521-3 (Dec 14 2011) ISSN: 1364-548X [Electronic] England
• PMID: 22027893 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Biomarkers
• Nanotubes, Carbon
• Organometallic Compounds
• Picolinic Acids
• Terbium
• dipicolinic acid

Topics

• Bacillus anthracis (chemistry)
• Biomarkers (analysis, chemistry)
• Electrochemistry (methods)
• Nanotubes, Carbon (chemistry)
• Optical Phenomena
• Organometallic Compounds (chemistry)
• Picolinic Acids (analysis, chemistry)
• Terbium (chemistry)