Polymer actuators of fluorene derivatives with enhanced inner channels and mechanical performance

Dong Jie Guo*, Rui Liu, Ya ke Li, Winston H. Elliott, Jun Ping Du, Hao Zhang, Ding Yonghui, Wei Tan, Shao Ming Fang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


A novel ion-exchange polymer-metal composite (IPMC) actuator is fabricated by sandwiching sulfonated fluorene blocked polysulfone (SDPF-b-PSU) between two Pt nanograin sheets. With increased concentration of chlorosulfonic acid, the SDPF-b-PSU film with more sulfonic groups exhibits strong ion exchange capacity, high Li+ ion conductivity, and ordered phase separation, which may contain an increased number of cations and possess larger and better interconnected inner channels for ion migration, thus providing the power to produce large force and power outputs. The SDPF-b-PSU film also exhibits enhanced mechanical performance and water uptake when compared to the pure Nafion film, providing a strong, hydrated matrix to support IPMC functions. At the driving voltage of 4 V, the SDPF-b-PSU actuator exhibits a strong force output which is 11 folds higher than that of the pure Nafion actuator.

Original languageEnglish (US)
Pages (from-to)791-799
Number of pages9
JournalSensors and Actuators, B: Chemical
StatePublished - Feb 2018


  • Electromechanical response
  • Fluorene blocked polysulfone
  • Ionic exchange polymer metal composite (IPMC)
  • Phase separation
  • Yield modulus

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry


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