Morphological and spectroscopic analyses of poly(alkyl methacrylate)/ poly(thiophene) composite nanoparticles prepared by dual initiation system

Seung Mo Lee, Wonseok Cho, Subramani Sankaraiah, Sun Jong Lee, Jung Hyun Kim, In Woo Cheong

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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.

Original languageEnglish
Pages (from-to)33-44
Number of pages12
JournalColloid and Polymer Science
Issue number1
Publication statusPublished - 2013 Jan 1


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

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