Palladium metal nanoparticle size control through ion paired structures of [PdCl4]2− with protonated PDMAEMA

Abstract

The mean diameter of palladium metal particles produced by citrate reduction of the (H⁺)_n PDMAEMA/[PdCl₄]²⁻ aqueous system increases from 1.4 nm to 5.0 nm as the pH decreases from 6.3 to 3.3 and the (H⁺)_n PDMAEMA/[PdCl₄]²⁻ species undergo conversion from a cross linked polymer network to a single chain structure.