Preparation of Thin-Layer Graphene Using RAFT Polymerization and a Thiol-Ene Click Reaction

  • Minho Kwon
  • Taeheon Lee
  • Youngsil Lee
  • Jong Hun HanEmail author
  • Hyun-jong PaikEmail author


In this paper, functionalization of graphene is conducted through click reactions for its effective dispersion. The poly(sodium 4-styrenesolfonate) (PSS) was synthesized using reversible addition-fragmentation chain transfer (RAFT) polymerization. The chain end dithioester group of RAFT-polymerized PSS was reduced to a thiol and used to couple PSS to graphene oxide (GO) via a thiol-ene click reaction. An aqueous dispersion of reduced GO with PSS (PSS-rGO) resisted sedimentation due to steric effects and charge-charge repulsion between the PSS attached to rGO. Atomic force microscopy showed that the PSS-rGO mixture was composed of dispersed particles of thin-layer (1.5 nm thick) graphene. Thickness of the PSS-rGO was close to that of GO. This indicates that there was no significant re-aggregation during GO reducing process.


graphene functionalized graphene oxide RAFT thiol-ene click chemistry 


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This research was supported by Nano-Material Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (2017M3A7B4014045). The authors also acknowledge the Korea Basic Science Institute, Busan center, for assistance with the X-ray photoelectron spectroscopy. This work was supported by Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2018R1A6A1A03024334).

Supplementary material


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Copyright information

© The Polymer Society of Korea and Springer 2019

Authors and Affiliations

  1. 1.Department of Polymer Science and EngineeringPusan National UniversityBusanKorea
  2. 2.Industry-Academic CooperationKumoh National Institute of TechnologyGumiKorea
  3. 3.School of Chemical Engineering and Optoelectronics Convergence Research CenterChonnam National UniversityGwangjuKorea

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