10.1021/nl803417v.s001 Ludovico Cademartiri Ludovico Cademartiri Francesco Scotognella Francesco Scotognella Paul G. O’Brien Paul G. O’Brien Bettina V. Lotsch Bettina V. Lotsch Jordan Thomson Jordan Thomson Srebri Petrov Srebri Petrov Nazir P. Kherani Nazir P. Kherani Geoffrey A. Ozin Geoffrey A. Ozin Cross-Linking Bi<sub>2</sub>S<sub>3</sub> Ultrathin Nanowires: A Platform for Nanostructure Formation and Biomolecule Detection American Chemical Society 2009 Biomolecule DetectionThis paper Nanowire 2S chemical detection platform nanowire dispersion 2009-04-08 00:00:00 Journal contribution https://acs.figshare.com/articles/journal_contribution/Cross_Linking_Bi_sub_2_sub_S_sub_3_sub_Ultrathin_Nanowires_A_Platform_for_Nanostructure_Formation_and_Biomolecule_Detection/2865832 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.