| 초록 |
Fluorophores near metal nanoparticles can show amplified fluorescence due to the coupling between fluorophores and surface plasmon of metal nanoparticles. We fabricated near-perfect two dimensional arrays of gold nanoparticles on a solid substrate by a non-lithographic method for a substrate of surface-plasmon-enhanced fluorescence. PS-P4VP diblock copolymers in toluene self-assemble into nanometer-sized spherical micelles, consisting of an insoluble P4VP core and a soluble PS corona. When a thin film of PS-P4VP micelles was exposed to THF vapor, a highly-ordered hexagonal array of the micelles was created. After incorporating precursors of gold nanoparticles into the P4VP cores, a highly-ordered array of gold nanoparticles were synthesized by oxygen plasma treatment. The hexagonally-ordered array of gold nanoparticles was characterized by AFM and FE-SEM, and then was employed as a substrate to induce the surface-plasmon-enhanced fluorescence with various fluorophores. |
