Development of nanoarchitectured nanoporous metal film and nanoparticles using block copolymer micelle for ultra-sensitive SERS Platform
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초록
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The surface-enhanced Raman scattering (SERS) substrate contains plasmonic nanomaterials and the formation of nanogap between plasmonic nanomaterials is the one of the most important factors. Therefore, the development of nanomaterials and nanostructures is key factor for the high-performance SERS substrates. Although many studies have been reported, the formation of rich nanogaps and reliable processes are remaining tasks. In this study, we report a new nanoarchitecture technique using nanoporous metal film and nanoparticles to form a rich nanogap. Soft-templating method using block copolymer micelles was used to fabricate plasmonic nanoporous Au films through the electrochemical deposition technique for a new type of SERS substrates. In addition, we designed a process that AuNPs with a proper size to locate on the mesoporous gold film. The fabricated SERS substrates were examined and optimized to achieve the high-performance in LOD and EF values using various analytes and conditions.