Slow Energy Transfer in Self-Doped β-Conformation Film of Steric Polydiarylfluorenes toward Stable Dual Deep-Blue Amplified Spontaneous Emission

Man Xu, Lili Sun, Shengjie Wang, Jinyi Lin, Mengna Yu, Xuhua Wang, Paul N. Stavrinou, Linghai Xie, Nathan J. Cheetham, Xuehua Ding, Donal Bradley, Wei Huang

Research output: Contribution to journalArticlepeer-review

Abstract

Exciton behavior is crucial for improving the optoelectronic property of a light-emitting conjugated polymer. Herein, the photoexcitation dynamics of exciton migration and energy transfer in a self-doped β-conformation film of the polydiarylfluorenes (poly[4-(octyloxy)-9,9-diphenylfluoren-2,7-diyl]-co-[5-(octyloxy)-9,9- diphenylfluoren-2,7-diyl], PODPF) are demonstrated. Compared to the first generation of the β-conformation polyfluorene, poly(9,9-dioctylfluorene) (PFO), energy transfer occurs in PODPF β-conformation films in a time period of ≈150 ps, much longer than those of the PFO ones (
Original languageEnglish (US)
Pages (from-to)2100723
JournalAdvanced Optical Materials
DOIs
StatePublished - Oct 18 2021

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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