Design of photofunctional hybrid polymer nanoassemblies based on surface plasmon resonance of a metal nanoparticle array

Hybrid polymer nanoassemblies were constructed by manipulating metal nanoparticle arrays with photofunctional polymer nanosheets. Polymer nanosheets consisting of N-dodecylacrylamide were prepared by the Langmuir-Blodgett (LB) technique. Noble metal nanoparticles (Au and Ag) were immobilized onto polymer nanosheets through the dipping method and took a monoparticle layer formation in which they were uniformly distributed. The luminescence and photocurrent enhancement based on localized surface plasmon excitation was achieved by combining silver nanoparticle arrays with photofunctional polymer nanosheets having ruthenium complexes. Effective utilization of coupled surface plasmon resonance from gold nanoparticles was also demonstrated experimentally to enhance the second harmonic generation from hybrid polymer nanoassemblies. These results indicate that hybrid polymer nanoassemblies are potentially useful for optoelectronic applications.