Effect of chain length on solubility of mechanochemically functionalized Si nanoparticles

PHYS 96

Andrew S Heintz, aheintz@tulane.edu1, Mark J. Fink, fink@tulane.edu2, and Brian S. Mitchell, brian@tulane.edu1. (1) Department of Chemical and Biomolecular Engineering, Tulane Univeristy, 300 Lindy Boggs Bldg, New Orleans, LA 70118, (2) Department of Chemistry, Tulane University, New Orleans, LA 70118
Silicon nanoparticles are produced and functionalized simultaneously via a mechanochemical method. Fresh silicon surface created as a result of comminution during high energy ball milling (HEBM) allows for a direct reaction between the silicon and the reactive organic liquid media. The resulting functionalized silicon nanoparticles can exhibit strong blue luminescence. The nanoparticles remain solubilized in the liquid milling media, allowing for easy collection. Solubilized nanoparticle size selectivity and the overall process yield can vary depending on the properties of the liquid media. The dependence of functional molecule chain length on nanoparticle solubility is discussed.
 

Nanostructured Materials
8:20 AM-12:00 PM, Monday, April 7, 2008 Morial Convention Center -- Rm. 338/339, Oral

Division of Physical Chemistry

The 235th ACS National Meeting, New Orleans, LA, April 6-10, 2008