| About this Abstract |
| Meeting |
2011 TMS Annual Meeting & Exhibition
|
| Symposium
|
Surfaces and Heterostructures at Nano- or Micro-Scale and Their Characterization, Properties, and Applications
|
| Presentation Title |
Nanoparticle Cluster Size Control using Chemically Modified Self-Assembly on Copolymer Surfaces |
| Author(s) |
Sarah M. Adams, Regina Ragan |
| On-Site Speaker (Planned) |
Sarah M. Adams |
| Abstract Scope |
Organized clustering of metallic nanoparticles was examined for the development of field-enhanced chemical and biological detection devices, with the capacity to achieve single-molecule level detection resulting from surface enhanced Raman scattering, associated with closely-spaced noble metal nanostructures. Using chemical self-assembly techniques, we attached monodisperse, colloidal gold nanoparticles on self-organized polymer templates, patterning arrays of nanoparticle clusters with sub-10 nanometer interparticle spacing, to engineer enhanced optical fields. Poly(methyl methacrylate) domains in phase-separated polystyrene-<I>b</I>-poly(methyl methacrylate) diblock copolymer thin films were chemically modified with surface amination for controlled arrangements. Chemically synthesized sub-20 nanometer diameter gold nanoparticles were attached to the amine-functionalized surfaces using EDC crosslinking chemistry with thioctic acid ligand-bound to the nanoparticle surface, preferentially immobilizing the Au nanoparticles on PMMA domains of the copolymer template. By controlling particle size relative to PMMA domain size, nanoparticle clustering was controlled. |
| Proceedings Inclusion? |
Planned: A CD-only volume |