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., Yamato, T., Redshaw, C., Gu, D. Y., & 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
• 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