Semiconductor-encapsulated peptide-amphiphile nanofibers.
We report here on the use of peptide-amphiphile (PA) nanofibers displaying the S(P)RGD peptide sequence on their exterior as templates for the mineralization of cadmium sulfide (CdS). At low Cd:PA ratios, the nanofibers nucleate and organize quantum-confined 3-5 nm CdS nanocrystals into linear arrays. Tubular structures, in which the PA fibers are completely encapsulated by the semiconductor, are produced at higher Cd:PA ratios.
Department of Chemistry, Department of Materials Science & Engineering, and Feinberg School of Medicine, Northwestern University, 2220 Campus Drive, Evanston, IL 60208, USA.
Eli D
ED
Sone
Samuel I
SI
Stupp
D019187:Cadmium Compounds / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D006882:Hydroxyapatites / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry*; D009842:Oligopeptides / Q000737:chemistry*; D010768:Phosphoserine / Q000031:analogs & derivatives; D012666:Semiconductors; D013440:Sulfides / Q000737:chemistry*
D019187:Cadmium Compounds; D006882:Hydroxyapatites; D009842:Oligopeptides; D013440:Sulfides; C034939:cadmium sulfide; D010768:Phosphoserine; C047981:arginyl-glycyl-aspartic acid