An alternative approach to amyloid fibrils morphology: CdSe/ZnS quantum dots labelled β-amyloid peptide fragments Aβ (31–35), Aβ (1–40) and Aβ (1–42)

Aβ (31–35) peptide and control peptides as well as full length Aβ (1–40) and Aβ (1–42) peptides were labelled with luminescent CdSe/ZnS quantum dots (QDs) to observe the morphology of amyloid fibers. A comparison was made between QDs and an organic dye, namely Dansyl group, which showed that the QDs present a much better contrast for imaging than the organic dye.