Direct demonstration of triplet excimer in purely organic room temperature phosphorescence through rational molecular design

Zhenjiang Liu; Yu Tian; Jie Yang; Aisen Li; Yunsheng Wang; Jia Ren; Manman Fang; Ben Zhong Tang; Zhen Li

doi:10.1038/s41377-022-00826-4

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Direct demonstration of triplet excimer in purely organic room temperature phosphorescence through rational molecular design

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- Direct demonstration of triplet excimer in purely organic room temperature phosphorescence through rational molecular design
- Light: Science & Applications Vol. 11, Issue 6, Pages: 1218-1226(2022)
- Affiliations：
  
  1.Institute of Molecular Aggregation Science, Tianjin University, Tianjin, 300072, China
  2.Joint School of National University of Singapore, Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
  3.Shenzhen Institute of Molecular Aggregate Science and Engineering, School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong, 518172, China
  4.Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, Tianjin University, Tianjin, 300072, China
  5.Department of Chemistry, Wuhan University, Wuhan, 430072, China
  6.Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China
- Author bio：
  
  Jie Yang (jieyang2018@tju.edu.cn)
  Zhong Tang (tangbenz@cuhk.edu.cn)
  Zhen Li (lizhen@whu.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00826-4
  CLC：
- Published：30 June 2022，
  
  Published Online：17 May 2022，
  
  Received：01 March 2022，
  
  Revised：23 April 2022，
  
  Accepted：28 April 2022
- Accepted：
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Liu, Z. J. et al. Direct demonstration of triplet excimer in purely organic room temperature phosphorescence through rational molecular design. Light: Science & Applications, 11, 1218-1226 (2022).
DOI：

Liu, Z. J. et al. Direct demonstration of triplet excimer in purely organic room temperature phosphorescence through rational molecular design. Light: Science & Applications, 11, 1218-1226 (2022). DOI： 10.1038/s41377-022-00826-4.

摘要

Abstract

Organic luminogens with room temperature phosphorescence (RTP) have been paid great attention and developed rapidly for their wide application values. Until now

the internal mechanism and source of phosphorescence are still obscure

especially for the relationship between molecular dimer and RTP emission. Hence

we designed and synthesized eight phenothiazine 5

5-dioxide derivatives to directly reveal how the monomer and dimer in packing affect the RTP behavior. Dimers with strong π-π stacking (

20.66°;

3.86 Å) lead to pure triplet excimer emission

while those with weak π-π stacking (27.02°

40.64°; 3.84 Å

4.41 Å) contribute to dual RTP emissions of both monomer and triplet excimer. The valuable information of this work would promote the further development of this research field

as well as others in aggregate.

关键词

Keywords

references

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