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Deep‐Red/Near‐Infrared Electroluminescence from Single‐Component Charge‐Transfer Complex via Thermally Activated Delayed Fluorescence Channel
Author(s) -
Chen WenCheng,
Huang Bin,
Ni ShaoFei,
Xiong Yuan,
Rogach Andrey L.,
Wan Yingpeng,
Shen Dong,
Yuan Yi,
Chen JiaXiong,
Lo MingFai,
Cao Chen,
Zhu ZeLin,
Wang Ying,
Wang Pengfei,
Liao LiangSheng,
Lee ChunSing
Publication year - 2019
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201903112
Subject(s) - electroluminescence , intermolecular force , materials science , molecule , acceptor , fluorescence , charge (physics) , infrared , anthracene , photochemistry , resonance (particle physics) , optoelectronics , chemical physics , nanotechnology , layer (electronics) , atomic physics , optics , chemistry , organic chemistry , physics , quantum mechanics , condensed matter physics
Formation of a single‐component charge‐transfer complex (SCCTC) is unveiled in solid state of an intermolecular charge‐transfer molecule 2‐(4‐(1‐phenyl‐1 H ‐phenanthro[9,10‐ d ]imidazol‐2‐yl)phenyl)anthracene‐9,10‐dione (PIPAQ). Intermolecular donor–acceptor interactions between two PIPAQ molecules is the primary driving force for self‐association and contributes to intermolecular charge transfer. The SCCTC character is fully verified by crystallographic, photophysical, electron spin resonance, and vibrational characterizations. The PIPAQ‐based SCCTC is first applied in light‐emitting devices as an emissive layer to realize efficient deep‐red/near‐infrared electroluminescence. This work provides new insights into SCCTC and represents an important step toward their applications in optoelectronic devices.