Figure 1From: Peptide immobilisation on porous silicon surface for metal ions detection Transmission IR spectra of modified PSi. (a) Hydrogenated surface after electrochemical fabrication. (b) After thermal grafting of undecylenic acid. (c) After activation treatment of 90 min in an aqueous solution of 5 mM EDC and 5 mM NHS. (d) After amidation in 0.1 mM Gly-His-Gly-His in 1 × PBS buffer.Back to article page