POLY 224 |
| We introduce nanoporous membranes decorated with metal nanoparticles as robust and facile SERS substrate with high efficiency. Porous alumina membranes (PAMs) are modified with polyelectrolytes for the subsequent assembly of metal nanoparticles inside the vertical nanopore arrays. These metal nanoparticles inside the nanocanal arrays interact with the incoming laser beam very efficiently because of the easy light propagation and multiple interactions with metal clusters through the vertical pores. The controlled assembly of metal nanoparticle aggregates into porous alumina membranes provides hot spots inside the entire continuous nanocanals. The capability of this SERS substrate was verified for trace level detection of explosives. |
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Functional Nanomaterials from New Polymer Synthetic Methodologies
8:30 AM-12:00 PM, Monday, April 7, 2008 Hilton New Orleans Riverside -- Grand Salon 7/10, Oral
Division of Polymer Chemistry |