Chemical Journal of Chinese Universities ›› 2019, Vol. 40 ›› Issue (9): 1793-1794.doi: 10.7503/cjcu2019h001

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Non-Aufbau Principle to Achieve High Stability Organic Luminescence Radicals

TANG Benzhong()   

  1. Department of Chemistry, the Hong Kong University of Science and Technology, Hong Kong, China
  • Received:2019-07-30 Online:2019-09-10 Published:2019-08-03


To solve the problem of stability of organic luminescence radicals, Li et al. proposed a new kind of organic luminescence radicals with non-Aufbau electronic structure by using donor-acceptor molecular structure. The stability of this kind of radicals was greatly improved and the high luminous efficiency was maintained. Using a non-Aufbau radical as the emission layer of an OLED, the maximum external efficiency of 5.3% has been achieved, which is among the highest efficiencies for pure organic near-infrared electroluminescence. This work has been published online in the Nature Materials in July 22, 2019.

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