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Tunable-Emission Amorphous Room-Temperature Phosphorescent Polymers Based on Thermoreversible Dynamic Covalent Bonds.

Xiaohan Lin1, Jie Wang1, Bingbing Ding1

  • 1Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, Meilong Road 130, Shanghai, 200237, China.

Angewandte Chemie (International Ed. in English)
|October 16, 2020
PubMed
Summary

Researchers developed new organic materials that emit light at room temperature using dynamic covalent chemistry. These materials, synthesized via Diels-Alder reactions, offer tunable colors and potential applications in advanced devices and sensors.

Keywords:
dynamic covalent bondsemission regulationorganic room-temperature phosphorescencephotophysicspolymers

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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Polymer Chemistry

Background:

  • Pure organic room-temperature phosphorescence (RTP) materials are crucial for advanced photoelectric, biochemical, and bioimaging applications.
  • Dynamic covalent chemistry (DCC) enables the creation of intelligent materials with responsive and feedback functionalities.

Purpose of the Study:

  • To synthesize novel organic RTP materials with tunable emission properties.
  • To explore the application of thermally reversible dynamic covalent bonds in polymer design for RTP applications.

Main Methods:

  • Utilized the Diels-Alder reaction, a [4+2] cycloaddition, to synthesize three distinct polymers.
  • Incorporated thermally reversible dynamic covalent bonds into the polymer backbone for reversible transformations.
  • Characterized the photophysical properties, including RTP emission, of the synthesized polymers.

Main Results:

  • All synthesized polymers exhibited distinct and tunable room-temperature phosphorescence (RTP) emissions.
  • The poly-Br-An polymer achieved an absolute phosphorescence quantum yield of up to 12%.
  • Demonstrated the successful application of reversible dynamic covalent bonds in creating RTP materials.

Conclusions:

  • A novel strategy for designing and synthesizing tunable-emission organic RTP materials using dynamic covalent bonds has been established.
  • The developed polymers show promise for applications in photoelectric devices, biochemical sensors, and bioimaging.
  • This work highlights the potential of DCC in creating advanced functional organic materials.