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.
School of Chemistry and Environment, South China Normal University, Guangzhou 510006, P. R. China.
Chaoliang
C
Tan
Qianming
Q
Wang
Cheng Cheng
CC
Zhang
D001408:Bacillus anthracis / Q000737:chemistry*; D015415:Biomarkers / Q000032:analysis / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D055620:Optical Phenomena; D009942:Organometallic Compounds / Q000737:chemistry*; D010848:Picolinic Acids / Q000032:analysis / Q000737:chemistry*; D013725:Terbium / Q000737:chemistry*
D015415:Biomarkers; D037742:Nanotubes, Carbon; D009942:Organometallic Compounds; D010848:Picolinic Acids; D013725:Terbium; C004860:dipicolinic acid