Screening of Oligopeptides that Recognize Inorganic Crystalline Facets of Metal Nanoparticles.

ABSTRACT: Peptides that possess specific affinity to distinct crystal facets have been reported previously. However, their adsorption behavior in terms of the crystal sizes and shapes is less exploited. Herein, we isolate several phage clones that show the strong affinity to {100} of Pd at a neutral pH from the M13 phage library, and among them the phages that have shape selectivity to the cubic structure are identified by eliminating ones that bind randomly shaped Pd nanoparticles (NPs). Since Pd nanocube-binding phages are eluted by lowering pH values in the biopanning process, the selected phages (and their binding peptides displayed on protein pIII) can be released from Pd surfaces through pH changes. We used this feature to modulate the capping density of selected peptides on NPs. For example,

SUBMITTER: Wei Z 

PROVIDER: S-EPMC6821393 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature