Synthesis of solution-stable PEDOT-coated sulfonated polystyrene copolymer PEDOT:P(SS-co-St) particles for all-organic NIR-shielding films

Soeun Im, Chanil Park, Wonseok Cho, Jooyoung Kim, Minseok Jeong, Jung Hyun Kim

Research output: Contribution to journalArticle


We prepared poly(3,4-ethylenedioxythiophene) (PEDOT)-coated sulfonated polystyrene copolymer particles as efficient heat-shielding agents, which showed strong near-infrared (NIR) absorption, with high solid contents and good solution stability. The poly(styrene sulfonate-co-styrene) (P(SS-co-St)) copolymers were successfully synthesized via radical solution polymerization, and PEDOT-coated P(SS-co-St) (PEDOT:P(SS-co-St)) was synthesized via Fe + -catalyzed oxidative polymerization. PEDOT:P(SS-co-St) was characterized by nuclear magnetic resonance and Fourier transform infrared spectroscopies. The particle size and morphology of PEDOT:P(SS-co-St) were examined using transmission electron microscopy, dynamic light scattering, and zeta potential measurements. The maximum NIR-shielding efficiency of the film was 92.0% with 40% transmittance. The high solution stability of PEDOT:P(SS-co-St) make it an ideal candidate for heat-insulating materials that find application in semi-transparent heat-insulator-coated windows.

Original languageEnglish
Article number151
Issue number3
Publication statusPublished - 2019 Jan 1


All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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