4.7 Article

Fabrication of Intrinsic, Elastic, Self-healing, and Luminescent CsPbBr3 Quantum Dot-Polymer Composites via Thiol-Ene Cross- Linking

Journal

ACS APPLIED POLYMER MATERIALS
Volume 4, Issue 12, Pages 8987-8995

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acsapm.2c01352

Keywords

perovskite; quantum dots; stretch; self-healing; down-conversion

Funding

  1. Ministry of Science and Technology
  2. Joint Center for High Valued Instruments at National Sun Yat-Sen University
  3. [MOST 108-2221-E-001-102-MY3]

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This article presents a simplified approach for producing elastic, self-healing, and light-conversion material using CsPbBr3 quantum dots and a designed copolymer. The composite film exhibits high luminescence and elasticity, and achieves 90% self-healing efficiency at room temperature.
Here, we offer a straightforward approach for making elastic, self-healing, and light-conversion material, in which CsPbBr3 quantum dots (QDs) form a strong bond with a designed copolymer including elastic behavior based on the mechanical characteristics of polyisoprene and reversible bonding moieties for self-healing function. This designed composite film has highly luminescent and typically elastic properties, including good ultimate strength (similar to 0.14 N/mm2) and high stretchability (similar to 486%). The copolymer matrix exhibited excellent compatibility with CsPbBr3 QDs, in which they maintained their uniform distribution within the network after a serial stretching process due to the strong bond between copolymers and CsPbBr3 QDs. Furthermore, the composite film dynamic network is capable of 90% self-healing efficiency at room temperature without the need of any healing stimulus, heat, plasticizer, or solvent. This simple method suggested a relatively easy approach to a stable, elastic, and luminescent CsPbBr3 QD-based composite film that opens up the potential of fully stretchable light conversion material for light-emitting diodes.

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