| 초록 |
Unsubstituted polythiophene(PT) nanoparticles with 30 nm diameter was prepared using Fe3+ catalyzed oxidative polymerization in aqueous medium. 99% monomer conversion was achieved by a little FeCl3, which usually deteriorates the PL property of polythiophene nanoparticles. A broad absorption, maximun wavelength of UV absorbance ~ 400 nm, was observed at all reaction times. The red-shift from 484 nm to 511 nm in maximum wavelength of PL intensity and the increase of the PL intensity around 600~650 nm of the wavelength have an effect on red-emitting PL property of the polythiophene nanoparticle emulsions. The self-absorption of the polythiophene nanoparticles caused a reduced total PL intensity, and which was also confirmed by a non-normalized PL analysis. Moreover, polythiophene nanoparticles have completely various properties through controlling amount of H2O2. One of various characters is different luminescence. |
