Novel pyrenehexafluoroisopropanol derivative-decorated single-walled carbon nanotubes for detection of nerve agents by strong hydrogen-bonding interaction.
Fabrication of hybridized single-walled carbon nanotube (SWNT) device based on novel sensing material N-4-Hexafluoroisopropanolphenyl-1-pyrenebutyramide (HFIPP) via facile approach has been reported for the first time. Considered that strong hydrogen-bonding can be formed between HFIPP and dimethyl methylphosphonate (DMMP) (simulant of nerve agent sarin), the HFIPP-decorated SWNT device has been employed to detect DMMP. The detection limit achieved with our sensor is as low as 50 ppb; moreover, the response and reproducibility can be presented clearly even at very low concentration of DMMP. Excellent sensitivity and selectivity of the hybridized SWNT-HFIPP device suggest that it has great potential application for detecting explosives and nerve agents. In order to investigate sensing mechanism of SWNT-HFIPP for DMMP, control electrical and fluorescent experiments have been carried out and discussed in the present paper.
Kong
Lingtao
L
Key Laboratory of Biomimetic Sensing and Advanced Robot Technology, Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, Anhui 230031, China.
Wang
Jin
J
Luo
Tao
T
Meng
Fanli
F
Chen
Xing
X
Li
Mingqiang
M
Liu
Jinhuai
J
D015374:Biosensing Techniques / Q000295:instrumentation* / Q000379:methods*; D002619:Chemical Warfare Agents / Q000032:analysis*; D004563:Electrochemistry; D005453:Fluorescence; D006860:Hydrogen Bonding; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009943:Organophosphorus Compounds / Q000737:chemistry; D020005:Propanols / Q000737:chemistry; D012680:Sensitivity and Specificity; D006845:Hydrocarbons, Fluorinated
D002619:Chemical Warfare Agents; D037742:Nanotubes, Carbon; D009943:Organophosphorus Compounds; D020005:Propanols; C031116:dimethyl methylphosphonate; C001337:hexafluoroisopropanol; D006845:Hydrocarbons, Fluorinated