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Supplementary information files for New quinoxaline-based blue emitters: molecular structures, aggregation-induced enhanced emission characteristics and OLED application

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posted on 30.04.2021, 09:56 by Xiaoyu Mao, Fuli Xie, Xiaohui Wang, Qingsong Wang, Zhipeng Qiu, Mark ElsegoodMark Elsegood, Jie Bai, Xing Feng, Carl Redshaw, Yanping Huo, Jian‐Yong Hu, Qing Chen
Supplementary files for article New quinoxaline-based blue emitters: molecular structures, aggregation-induced enhanced emission characteristics and OLED application. Three new, deep blue light emitters, containing quinoxaline with differing substitution positions (1‐ or 2‐ position) pyrene (biphenyl) moieties, were synthesized by a Pd‐catalysed coupling reaction in high yield, and were fully characterized by 1H/13C NMR spectroscopy, single crystal X‐ray diffraction, and high‐resolution mass spectrometry (HRMS). The designed molecules exhibited good thermal stability (Tg > 452 oC). Single crystal X‐ray diffraction indicated that the compounds containing pyrene units exhibiting π‐π stacking, and thus this family of compounds exhibited intramolecular charge transfer (ICT) and non‐typical and aggregation‐induced enhanced emission (AIEE) characteristics possessing blue emission both in solution and in the aggregation (solid) state. Furthermore, a selected deep blue emitter was utilized as the emitting layer for the fabricating of doped OLED devices, which afforded a deep blue electroluminescence (EL) peak at 428 nm with a narrow FWHM of 57 nm, and the Commission Internationale de L'Eclairage (CIE) chromaticity coordinates of (0.15, 0.06).

Funding

National Natural Science Foundation of China (21975054 and 21602014)

Natural Science Foundation of Guangdong Province of China (2019A1515010925)

Guangdong Provincial Key Laboratory of Information Photonics Technology 2020B121201011

“One Hundred Talents Program” of the Guangdong University of Technology (GDUT) (1108-220413205

Guangdong provincial key laboratory of functional soft condensed matter of the Guangdong University of Technology (GDUT) (220413205)

Coordination chemistry approaches to societal issues: environment and health

Engineering and Physical Sciences Research Council

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School

  • Science

Department

  • Chemistry