Tuning the chemical selectivity of SWNT-FETs for detection of heavy-metal ions.
A method to functionalize single-walled carbon nanotubes (SWNTs) in a field-effect transistor (FET) device for the selective detection of heavy-metal ions is presented. In this method, peptide-modified polymers were electrochemically deposited onto SWNTs and the selective detection of metal ions was demonstrated by choosing appropriate peptide sequences. The signal transduction mechanism of the peptide-modified SWNT-FETs has also been studied.
Forzani
Erica S
ES
Center for Solid State Electronics Research and Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287, USA.
Li
Xiulan
X
Zhang
Peiming
P
Tao
Nongjian
N
Zhang
Ruth
R
Amlani
Islamshah
I
Tsui
Raymond
R
Nagahara
Larry A
LA
D003300:Copper / Q000737:chemistry; D004563:Electrochemistry / Q000379:methods; D005998:Glycine / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D020450:Heavy Ions; D007477:Ions; D007700:Kinetics; D008422:Materials Testing; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D010455:Peptides / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D015398:Signal Transduction; D013816:Thermodynamics; D014867:Water / Q000737:chemistry
D007477:Ions; D037742:Nanotubes, Carbon; D010455:Peptides; D011108:Polymers; D014867:Water; D006046:Gold; D003300:Copper; D009532:Nickel; D005998:Glycine