Multilayer Nanoreactors for Metallic and Semiconducting Particles

• DOI: 10.1021/la991089t
• Publication Date: 2002-07-26T06:04:16Z
• Authors: S. Joly; R. Kane; L. Radzilowski; T. Wang; A. Wu; R. E. Cohen; E. L. Thomas; M. F. Rubner
• Keywords: Nanoreactor; Sulfonic acid

Multilayer thin films of sequentially adsorbed polyelectrolytes were utilized as nanoreactors for both metallic (Ag) and semiconductor nanoparticles (PbS). Polyelectrolyte multilayers with a controlled content free carboxylic acid binding groups fabricated weak via suitable pH adjustments the processing solutions. These then used to bind various inorganic ions that subsequently converted into nanoparticles. Spatial control (at nanoscale) over growth was achieved use multilayer heterostructures also contain bilayer blocks are not able ions. "nonbinding" bilayers from strong polyacids such poly(styrene sulfonic acid). TEM imaging within indicates polycation polyanion layers these highly interpenetrated.