Improved aggregation-induced emission behavior in D-π-A architectures by modifying the donor units

Cao, Jing Yi; Yang, Guang; Xue, Zeng Min; Zhao, Wen Xuan; Chen, Shu Hai; Lin, Hong Tao; Yamato, Takehiko; Redshaw, Carl; Gu, Dan Yu; Wang, Chuan Zeng

Abstract

With the development of aggregation-induced emission (AIE) in optoelectronic devices, stimulus-responsive sensors, optical storage and bioimaging, the design and synthesis of efficient AIE luminogens remains a challenge. Herein, a series of asymmetric pyrene derivatives were prepared by stepwise functionalization at the 1-, 3-positions using traditional reactions. The experimental results show that a promising white-light emitting material (Commission Internationale de L'Eclairage (CIE): x = 0.32, y = 0.31), namely TPxzPy, which has completely separated the highest occupied molecular orbital (HOMOs) and lowest unoccupied molecular orbital (LUMOs) distribution, was produced. Moreover, a new strategy was established to construct pyrene-based AIE luminogens along the short axis. All compounds exhibited higher emission efficiency in the solid or aggregated state versus in solution, especially for TTPaPy with a competitive photoluminescence quantum yield as high as 76.2 %. The present work provides a feasible strategy to construct pyrene-based AIE materials for optoelectronic devices.

Citation

Cao, J. Y., Yang, G., Xue, Z. M., Zhao, W. X., Chen, S. H., Lin, H. T., …Wang, C. Z. (2023). Improved aggregation-induced emission behavior in D-π-A architectures by modifying the donor units. Dyes and pigments : an international journal, 220, Article 111758. https://doi.org/10.1016/j.dyepig.2023.111758

• Journal Article Type: Article
• Acceptance Date: Oct 11, 2023
• Online Publication Date: Oct 13, 2023
• Publication Date: Dec 1, 2023
• Deposit Date: Oct 23, 2023
• Publicly Available Date: Oct 14, 2024
• Journal: Dyes and Pigments
• Print ISSN: 0143-7208
• Electronic ISSN: 1873-3743
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 220
• Article Number: 111758
• DOI: https://doi.org/10.1016/j.dyepig.2023.111758
• Keywords: Process Chemistry and Technology; General Chemical Engineering
• Public URL: https://hull-repository.worktribe.com/output/4423688