Preparation of a novel core–shell nanostructured gold colloid–silk fibroin bioconjugate by the protein in situ redox technique at room temperatureElectronic supplementary information (ESI) available: contents of various amino acid residues in the SFP, UV–VIS absorption spectra, and preparation of the SF solution. See http://www.rsc.org/suppdata/cc/b1/b108013j/

Abstract

A novel core–shell gold colloid–silk fibroin (SF) bioconjugate was prepared by the protein in situ redox technique at room temperature, in which the tyrosine (Tyr) residue of the SF, having strong electron donating properties, in situ reduced Au(III) ions to Au colloids showing a stable and highly monodispersed nature.