Cited by 78Luminescence and Fluorescent MaterialsOrganic Light-Emitting Diodes ResearchLuminescence Properties of Advanced Materials

Achieving Dual Persistent Room‐Temperature Phosphorescence from Polycyclic Luminophores via Inter‐/Intramolecular Charge Transfer

Li, Feiyang, Guo, Song, Qin, Yanyan, Shi, Yuxiang, Han, Meiping, An, Zhongfu, Liu, Shujuan, Zhao, Qiang +1 more·2019·Advanced Optical Materials

Abstract

Organic persistent room‐temperature phosphorescence (OPRTP) materials show great prospects in optoelectronic and biomedical applications, such as display, anti‐counterfeiting, sensing, and bioimaging. However, the reported OPRTP material systems are relatively rare, and it is a challenge to achieve the tunability of OPRTP. In this work, a series of polycyclic luminophores are developed based on an indole derivative (6,12‐diphenyl‐5,6,11,12‐tetrahydroindolo[3,2‐ b ] carbazole, Ben‐H) as the structural skeleton. These compounds unexpectedly exhibit dual OPRTP at 442 to 623 nm with lifetimes spanning from 2 to 759 ms. Experimental data and theoretical calculations suggest that CH⋅⋅⋅π interactions in the T‐shaped dimers facilitate the intermolecular charge transfer, resulting in OPRTP in the yellow spectral region, and the persistent blue emission results from the intramolecular charge transfer. This work contributes to better understand the key role of charge transfer in achieving OPRTP and broaden the scope of OPRTP materials.

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Crossref · 10.1002/adom.201900511

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Authors
Li, F., Guo, S., Qin, Y., Shi, Y., Han, M., An, Z., Liu, S., Zhao, Q., & Huang, W.
Affiliations
  • Nanjing University of Posts and Telecommunications (CN)
  • Nanjing Tech University (CN)
  • Northwestern Polytechnical University (CN)
Corresponding author
  • Zhao, Qiang
  • Huang, Wei
Venue
Advanced Optical Materials
Publisher
Wiley
Published
2019-07-03
Volume
7
Issue
19
ISSN
2195-1071 (ISSN-L)
OpenAlex
W2953741433
Cited by
78
References
41
Citations by year
2026: 7 · 2025: 5 · 2024: 8 · 2023: 17 · 2022: 16 · 2021: 15 · 2020: 8 · 2019: 2
FWCI
3.70
Type
journal article
Language
en
Open access
closed
Locations
Advanced Optical Materials (publishedVersion)
Funders
  • China National Funds for Distinguished Young Scientists (61825503)
  • Natural Science Research of Jiangsu Higher Education Institutions of China (YX03001)
  • China Postdoctoral Science Foundation (2018M642282)
  • Natural Science Foundation of Jiangsu Province (BK20180760)
  • Jiangsu Planned Projects for Postdoctoral Research Funds (2018K155C)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence and Fluorescent Materials
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
  • Physical Sciences › Materials Science › Materials Chemistry › Luminescence Properties of Advanced Materials
Keywords
indole derivatives, intermolecular charge transfer, intramolecular charge transfer, C-H⋯π interactions, T-shaped dimer, dual emission, blue emission, yellow emission, phosphorescence lifetime

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