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Semiconductor-Encapsulated Peptide−Amphiphile Nanofibers

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journal contribution
posted on 13.10.2004, 00:00 by Eli D. Sone, Samuel I. Stupp
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.