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Polythiophene Derivatives Carbonized Polymer Dots:Aggregation Induced Solid-state Fluorescence Emission
  • +8
  • Jian Li,
  • Fanghao Zhao,
  • Fuchun Nan,
  • Jian Wang,
  • Yunxiu Zhang,
  • Ke Liang,
  • Xiaokuang Xue,
  • Tiejin Chen,
  • Lin Kong,
  • Jiechao Ge,
  • Pengfei Wang
Jian Li
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Fanghao Zhao
The University of Manchester
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Fuchun Nan
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Jian Wang
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Yunxiu Zhang
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Ke Liang
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Xiaokuang Xue
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Tiejin Chen
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Lin Kong
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Jiechao Ge
Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Corresponding Author:[email protected]

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Pengfei Wang
Technical Institute of Physics and Chemistry Chinese Academy of Sciences
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Abstract

Currently, solid-state fluorescent carbonized polymer dots (CPDs) have attracted attention increasingly due to their applications for op-toelectronic display. However, designing CPDs possessing solid-state fluorescence and clarifying the fluorescence mechanism still remain challenging. Herein, we initially synthesized a novel type of polythiophene derivatives CPDs, poly-4,4’-(thiophene-3,4-diyl)dibenzoic acid carbonized polymer dots (PDBA-CPDs) with solid-state fluorescence. Subsequently, the structural and optical characterization re-vealed that solid-state fluorescence originating from the aggregation induced emission of the CPDs. In brief, in aggregation state, the remaining polymer structure groups on the surface of the CPDs overlapped and weakened the non-radiative transition, enhancing sol-id-state fluorescence emission. Thirdly, three polythiophene-derived CPDs were designed to further demonstrate the aggregation in-duced solid-state fluorescence mechanism. Finally, owing to their unique properties of solid-state fluorescence, the white LEDs (light emitting diodes) were fabricated with high color rendering index (CRI) of 82.7 and CIE coordinates of (0.37, 0.39) using commercial 460 nm chip. This work facilitates the development of CPDs’ solid-state fluorescence mechanisms and advances the application of CPDs in the field of optoelectronics.
22 Mar 20231st Revision Received
23 Mar 2023Submission Checks Completed
23 Mar 2023Assigned to Editor
23 Mar 2023Review(s) Completed, Editorial Evaluation Pending
24 Mar 2023Reviewer(s) Assigned
07 Apr 2023Editorial Decision: Accept