Cross-linking Bi2S3 ultrathin nanowires: a platform for nanostructure formation and biomolecule detection.
This paper describes the use of chemical cross-linking of ultrathin inorganic nanowires as a bottom-up strategy for nanostructure fabrication as well as a chemical detection platform. Nanowire microfibers are produced by spinning a nanowire dispersion into a cross-linker solution at room temperature. Nanomembranes with thicknesses down to 50 nm were obtained by injecting the nanowire dispersion at the cross-linker-solution/air interface. Furthermore, the sensitivity of the nanowire to amine cross-linkers allowed development of a novel sensing platform for small molecules, like the neurotransmitter serotonin, with detection limits in the picomolar regime.
Cademartiri
Ludovico
L
Materials Chemistry Research Group, Lash Miller Chemical Laboratories, Department of Chemistry, University of Toronto, Toronto, ON, Canada.
Scotognella
Francesco
F
O'Brien
Paul G
PG
Lotsch
Bettina V
BV
Thomson
Jordan
J
Petrov
Srebri
S
Kherani
Nazir P
NP
Ozin
Geoffrey A
GA
D001729:Bismuth / Q000737:chemistry*; D053770:Nanowires; D013440:Sulfides / Q000737:chemistry*
D013440:Sulfides; D001729:Bismuth; C049897:bismuth sulfide