DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Peptide Amphiphile Nanofibers Template and Catalyze Silica Nanotube Formation. — Alliance for NanoHealth
Navigation
 
 
 
You are here: Home Research Publications Peptide Amphiphile Nanofibers Template and Catalyze Silica Nanotube Formation.
Document Actions

V M Yuwono and J D Hartgerink (2007)

Peptide Amphiphile Nanofibers Template and Catalyze Silica Nanotube Formation.

Langmuir. 2007 Mar 21; [Epub ahead of print].

Departments of Chemistry and Bioengineering, Rice University, 6100 Main St. MS. 60, Houston, Texas 77005.

Hollow silica nanotubes with tunable dimensions have been synthesized by condensation of tetraethoxysilane (TEOS) on peptide-amphiphile nanofiber templates followed by calcination. Peptide-amphiphile nanofibers direct silica mineralization by providing nucleation sites and catalyze silica polymerization at their surface. The catalytic activities of peptide-amphiphiles containing lysine, histidine, or glutamic acid were compared and only peptide amphiphiles containing lysine or histidine were found to be good catalytic templates. Depending on the reaction conditions, and the size of the PA assembler, the nanotube wall thickness could be varied between 5 and 9 nm.