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Schematic representation of the surface coating chemistry of CdSe/ZnS nanocrystals with phytochelatin-related α-peptides. The peptide C-terminal adhesive domain binds to the ZnS shell of CdSe/ZnS nanocrystals after exchange with the TOPO surfactant. A polar and negatively charged hydrophilic linker domain in the peptide sequence provides aqueous buffer solubility to the nanocrystals. TMAOH: Tetramethylammonium hydroxide; Cha: 3-cyclohexylalanine.
