Electrostatic attachment of gold and poly(lactic acid) nanoparticles onto ω-aminoalkanoic acid self-assembled monolayers on 316L stainless steel.

Citation:

Galit Shustak, Shaulov, Yulia , Domb, Abraham J. , and Mandler, Daniel. . 2007. “Electrostatic Attachment Of Gold And Poly(Lactic Acid) Nanoparticles Onto Ω-Aminoalkanoic Acid Self-Assembled Monolayers On 316L Stainless Steel.”. Chem. - Eur. J.chemistry - A European Journal, 13, Pp. 6402 - 6407.

Abstract:

The assembly of poly(lactic acid) (PLA) nanoparticles on a 12-aminodecanoic acid (ADA) self-assembled monolayer (SAM) is described. Assembly is accomplished through electrostatic interactions between the pos. charged SAM and the neg. charged PLA nanoparticles. The strategy used involves 2 steps in which a preliminary electrochem. coating of the ADA SAM is followed by a second step that involves immersing the SAM in a soln. contg. gold or PLA nanoparticles. The SAM was characterized by cyclic voltammetry (CV), XPS, FTIR spectroscopy, and contact angle measurements, whereas SEM was used to image the nanoparticles after electrostatic attachment was achieved. The authors found that the surface coverage of the nanoparticles could be controlled by modulating the electrostatic interactions between the neg. charged particles and the pos. charged SAM surface by varying the pH of the nanoparticle soln., the immersion time, and the no. of cyclic voltammetry scans under which the SAM was formed. [on SciFinder(R)]