4.6 Review

Enhanced Room-Temperature Phosphorescence through Intermolecular Halogen/Hydrogen Bonding

Journal

CHEMISTRY-A EUROPEAN JOURNAL
Volume 25, Issue 3, Pages 714-723

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201802819

Keywords

halogen bonds; hydrogen bonds; luminescence; noncovalent interactions; room-temperature phosphorescence

Funding

  1. Ministry of Science and Technology of China [2017YFA0204503]
  2. National Natural Science Foundation of China [21503139, 21521062, 21673144]
  3. Beijing Natural Science Foundation of China [2162011]
  4. High-Level Teachers in Beijing Municipal Universities in the Period of 13th Five-Year Plan [IDHT20180517, CITTCD20180331]
  5. Youth Innovative Research Team of Capital Normal University

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Room-temperature phosphorescence (RTP) materials with high efficiency have attracted much attention because they have unique characteristics that cannot be realized in conventional fluorescent materials. Unfortunately, efficient RTP in metal-free organic materials is very rare and it has traditionally been considered as the feature to divide purely organic compounds from organometallic and inorganic compounds. There has been increasing research interest in the design and preparation of metal-free organic RTP materials in recent years. It has been reported that intermolecular interactions make a big difference to the photophysical behavior of organic molecules. In this regard, herein, the parameters that affect RTP efficiency are discussed, and a brief review of recent intermolecular halogen-/hydrogen-bonding strategies for efficient RTP in metal-free organic materials are provided. The opportunities and challenges are finally elaborated in the hope of guiding promising directions for the design and application of RTP materials.

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