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Synthesis of a Rod-rod Diblock Copolymer, Poly(3-hexylthiophene)-blockpoly( furfuryl isocyanate), through the Anionic Polymerization with an Oxyanionic Macroinitiator

  • Chang-Geun Chae
  • Joonkeun Min
  • In-Gyu Bak
  • Jae-Suk LeeEmail author
Article
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Abstract

A rod-rod diblock copolymer (diBCP), poly(3-hexylthiophene)-block-poly(furfuryl isocyanate) (P3HT-b-PFIC), was synthesized through the anionic polymerization with an oxyanionic macroinitiator of P3HT. The properties of the diBCP (molecular weight, dispersity, composition, thermal stability, UV-visible absorption, and thin film morphology) were determined by various analytical methods. P3HT-b-PFIC was blended with C60 in a toluene solution to prepare a thin film of binary electron donor/acceptor system. Such blending enabled partial conjugation of the two components by the Diels-Alder reaction between furan and C60 at 60 °C for 3 h; the mixture was then spin-cast as a thin film, and annealed at 250 °C for 24 h. Tapping-mode atomic force microscopy (AFM) revealed that P3HT and C60 domains had nanoscale interfaces without a large phase segregation. This result indicated that the microphase separation of C60-functionalized P3HT-b-PFIC preserved even at high temperature provided free C60 molecules with channels to diffuse on the sides of P3HT domain, thus preventing the macroscopic crystallization of free C60 through the interfacial stabilization.

Keywords

Rod-rod diblock copolymer Poly(3-hexylthiophene)-block-poly(furfuryl isocyanate) C60 Diels-Alder reaction Nanoscale interfaces 

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Notes

Acknowledgments

This work was financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (Nos. NRF-2015R1A2A1A01002493 and NRF-2018R1A2B6003616). This work was also supported by “Nobel Research Project” grant for Grubbs Center for Polymers and Catalysis funded by the GIST in 2019.

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Copyright information

© Chinese Chemical Society Institute of Chemistry, Chinese Academy of Sciences Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Chang-Geun Chae
    • 1
  • Joonkeun Min
    • 1
  • In-Gyu Bak
    • 1
  • Jae-Suk Lee
    • 1
    Email author
  1. 1.School of Materials Science and EngineeringGwangju Institute of Science and Technology (GIST)GwangjuRepublic of Korea

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