title: Tuning the chemical selectivity of SWNT-FETs for detection of heavy-metal ions.
abstract: 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.
authors.affiliation: Center for Solid State Electronics Research and Department of Electrical Engineering, Arizona State University, Tempe, AZ 85287, USA.
authors.forename: Erica S
authors.initials: ES
authors.lastname: Forzani
authors.forename: Xiulan
authors.initials: X
authors.lastname: Li
authors.forename: Peiming
authors.initials: P
authors.lastname: Zhang
authors.forename: Nongjian
authors.initials: N
authors.lastname: Tao
authors.forename: Ruth
authors.initials: R
authors.lastname: Zhang
authors.forename: Islamshah
authors.initials: I
authors.lastname: Amlani
authors.forename: Raymond
authors.initials: R
authors.lastname: Tsui
authors.forename: Larry A
authors.initials: LA
authors.lastname: Nagahara
mesh_terms: 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
chemical_list: D007477:Ions; D037742:Nanotubes, Carbon; D010455:Peptides; D011108:Polymers; D014867:Water; D006046:Gold; D003300:Copper; D009532:Nickel; D005998:Glycine