Ferroelectric electroluminescent comb copolymer for single-material self-powered displays

Ji Yeon Kim, Seokyeong Lee, Sejin Lee, Kyuho Lee, Yoon Huh, Young Eun Kim, Jae Won Lee, Chang Eun Lee, Donghwan Kim, Byeong Jin Yim, Joona Bang, Yong Soo Cho, Eunkyoung Kim, June Huh, Cheolmin Park, Jin Kyun Lee

Research output: Contribution to journalArticlepeer-review

Abstract

Ferroelectric polymers have recently been applied in human-connected electronics as pressure (touch)-sensing materials to develop high-performance electronic skin and tactile sensing memory. Here, we report an organic synthetic route for developing a polymer possessing both ferroelectric and electroluminescent properties from which a self-powered pliable display can be readily implemented. The synthetic route involves reversible addition-fragmentation transfer-mediated graft copolymerization of poly(vinylidene fluoride) (PVDF) onto a polyfluorene (PFO) backbone, which results in a comb-like copolymer architecture composed of ferroelectric side chains (PVDFs) tethered to a light-emitting main chain (PFO). The resultant thin comb copolymer film, equipped with hardly integrable three natures (i.e., ferro- and piezoelectricity, luminescence, pliability), exhibits excellent light emission under alternating current and self-powering attributes upon mechanical deformation. This multifunctional polymer, where various properties including ferroelectricity and electroluminescence are imparted in molecular-level precision, envisions its use in a wide range of fields such as emerging self-powered interactive displays.

Original languageEnglish
Article number101006
JournalCell Reports Physical Science
Volume3
Issue number8
DOIs
Publication statusPublished - 2022 Aug 17

Keywords

  • electroluminescent polymers
  • ferroelectric polymers
  • ferroelectric-grafted luminescent comb copolymers
  • piezoelectric self-powering harvesters
  • single-molecule interactive displays
  • synchronous ferroelectricity and luminescence

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Engineering(all)
  • Energy(all)
  • Physics and Astronomy(all)

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