Poly(alkyl methacrylate)/poly(thiophene) (PAMA/PTh) core/shell nanoparticles were synthesized using a one-pot dual initiation system. A ferric chloride/hydrogen peroxide mixture and sodium vinyl sulfonate were used as an initiator couple and a reactive surfactant, respectively. In the dual initiation, process variables such as the concentration of reactive surfactant, monomer ratio, and monomer type were adjusted to control the particle size of PAMA/PTh core/shell nanoparticles from 192 to 1,172 nm. The inner structure of the core/shell nanoparticles was confirmed in their morphological transition from spherical particles to a crumpled sheath using a solvent extraction method and field-emission scanning electron microscopy. From the spectroscopic data, it was found that the UV-adsorption and fluorescent emission intensity of PAMA/PTh latexes increased with a decrease in the average particle size. The quantum efficiency of all the samples was approximately 12 % and was unaffected by the particle size.
Bibliographical noteFunding Information:
This work was supported by a National Research Foundation (NRF) grant funded by the Korean government (MEST) through the Active Polymer Center for Pattern Integration (no. R11-2007-050-00000-0) and by a grant from the Industrial Technology Development program (K0006005) of the Ministry of Knowledge Economy (MKE) of Korea. The research was also supported by the Pioneer Research Center Program though the National Research Foundation of Korea, which is funded by the Ministry of Education, Science and Technology (no. 2010-0019308/2012-0000424). This research was also supported by the Converging Center Program through the Ministry of Education, Science and Technology (2010 K001430).
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Polymers and Plastics
- Colloid and Surface Chemistry
- Materials Chemistry