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Due to its abundance and a wide range of beneficial physical and chemical properties, cellulose has become very popular in order to produce materials for various applications. This review summarizes the recent advances in the development of new cellulose materials and technologies using ionic liquids. Dissolution of cellulose in ionic liquids has been used… (More)
Small angle x-ray scattering ͑SAXS͒ measurements were performed on nanoporous methyl silsesquioxane films that were generated by the incorporation of a sacrificial polymeric component into the matrix and subsequently removed by thermolysis. The average pore radii ranged from 1 to 5 nm over a porosity range of ϳ5–50%. The distribution in pore size was… (More)
We report on a method to enhance the light-emission efficiency of printable thin films of a polymer doped with luminescent (CdSe)ZnS nanocrystals via metallic nanoparticles and nanoimprinted photonic crystals. We experimentally show a strong fluorescence enhancement of nanocrystals by coupling exciton-plasmon with the localized surface plasmon of metallic… (More)
Strong enhancements in the spontaneous emission intensity of dye chromophores-loaded in a printable polymer have been achieved by coupling the dye emission to surface plasmons of metallic thin films and metallic nanoparticles. The nanocomposite materials embossed by nanoimprint lithography process show good imprint properties.
The interaction between plasmons and excitons in photonic crystal structures is demonstrated to benefit the light extraction capabilities of polymer-based light emitting components. An enhancement of up to a factor of 40 is reported in structures fabricated by nanoimprint lithography.