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A gated strategy stabilizes room-temperature phosphorescence
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  • Kaizhi Gu,
  • Zhen-Gong Meng,
  • Xing-Wang Liu,
  • Yue Wu,
  • Xin Qi,
  • Yiran Ren,
  • Zhenqiang Yu,
  • Ben Tang
Kaizhi Gu
Central South University
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Zhen-Gong Meng
Nanjing Tech University
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Xing-Wang Liu
Shenzhen University
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Xin Qi
Shenzhen University
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Yiran Ren
Shenzhen University
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Zhenqiang Yu

Corresponding Author:[email protected]

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Ben Tang
The Chinese University of Hong Kong - Shenzhen
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Room-temperature phosphorescence (RTP) of purely organic materials is easily quenched with unexpected purposes because the excited triplet state is extremely susceptible to external stimuli. How to stabilize the RTP property of purely organic luminogens is still challenging and considered as the bottleneck in the further advancement of the bottom-up approach. Here, we describe a gated strategy that can effectively harness RTP by employing complexation/dissociation with proton. Due to the order-disorder transition orientation of intermolecular packing, the RTP of triazine derivative Br-TRZ will easily vanish upon mechanical force. Impressively, by enhancing its intramolecular charge transfer effect, the protonated Br-TRZ stubbornly possesses an obvious RTP under external grinding, whatever in the ordered or disordered intermolecular arrangement state. Consequently, the “Lock” gate of RTP was achieved in the protonated Br-TRZ molecule. Combined with theoretical calculation analysis, the enhanced charge transfer effect can narrow the singlet−triplet energy gap significantly, and stabilize the RTP property of triazine derivative sequentially. Furthermore, the locked RTP can be tuned via proton and counterions repeatedly and show excellent reversibility. This gated RTP concept provide an effective strategy for stabilizing the RTP emission of purely organic systems.
14 Jan 2023Submitted to Aggregate
17 Jan 2023Submission Checks Completed
17 Jan 2023Assigned to Editor
18 Jan 2023Reviewer(s) Assigned
30 Jan 2023Review(s) Completed, Editorial Evaluation Pending
03 Feb 2023Editorial Decision: Revise Minor
16 Feb 20231st Revision Received
17 Feb 2023Submission Checks Completed
17 Feb 2023Assigned to Editor
17 Feb 2023Reviewer(s) Assigned
03 Mar 2023Review(s) Completed, Editorial Evaluation Pending
03 Mar 2023Editorial Decision: Accept