A class of core-shell-type fluorescent nanospheres with a particle diameter less than 40 nm,which emit orange,yellow,green and cyan light,respectively,were prepared.In fabricating strategy,the water-insoluble,photo-th...A class of core-shell-type fluorescent nanospheres with a particle diameter less than 40 nm,which emit orange,yellow,green and cyan light,respectively,were prepared.In fabricating strategy,the water-insoluble,photo-thermostable fluorescent dye molecules are molecularly dispersed and embedded in the nanoscale crosslinked polymeric matrix via a modified miniemulsion polymerization process,and then the biocompatible shells are achieved by a seeded polymerization technique.These obtained nanospheres are uniform in size,highly photostable,of high chemical resistance and high fluorescence quantum-yield.展开更多
Magnetic yolk-shell structured anatase-based microspheres were fabricated through successive and facile sol-gel coating on magnetite particles, followed by annealing treatments. Upon loading with gold nanoparticles, t...Magnetic yolk-shell structured anatase-based microspheres were fabricated through successive and facile sol-gel coating on magnetite particles, followed by annealing treatments. Upon loading with gold nanoparticles, the obtained functional magnetic microspheres as heterogeneous catalysts showed superior performance in catalyzing the epoxidation of styrene with extraordinary high conversion （89.5%） and selectivity （90.8%） towards styrene oxide. It is believed that the construction process of these fascinating materials features many implications for creating other functional nanocomposites.展开更多
文摘A class of core-shell-type fluorescent nanospheres with a particle diameter less than 40 nm,which emit orange,yellow,green and cyan light,respectively,were prepared.In fabricating strategy,the water-insoluble,photo-thermostable fluorescent dye molecules are molecularly dispersed and embedded in the nanoscale crosslinked polymeric matrix via a modified miniemulsion polymerization process,and then the biocompatible shells are achieved by a seeded polymerization technique.These obtained nanospheres are uniform in size,highly photostable,of high chemical resistance and high fluorescence quantum-yield.
文摘Magnetic yolk-shell structured anatase-based microspheres were fabricated through successive and facile sol-gel coating on magnetite particles, followed by annealing treatments. Upon loading with gold nanoparticles, the obtained functional magnetic microspheres as heterogeneous catalysts showed superior performance in catalyzing the epoxidation of styrene with extraordinary high conversion （89.5%） and selectivity （90.8%） towards styrene oxide. It is believed that the construction process of these fascinating materials features many implications for creating other functional nanocomposites.
