Pressure-Induced Luminescence Enhancement of Aggregation-Induced Emission Molecules Confined in Two-Dimensional MOF Layers
Confining individual luminescent molecules in nanoscale spaces and investigating the correlation mechanism between molecular structure and luminescent properties under external stimuli is an effective strategy for optimizing their luminescent performance. Herein, 2,2′-biquinoline-4,4-dicarboxylic acid disodium salt (BCA) molecules with significant AIE characteristics were confined within the two-dimensional layers of Ni-MOF, forming a dye-embedded MOF (DE-Ni-MOF). A remarkable pressure-induced luminescence enhancement was observed when the confined BCA was released from high pressure to ambient conditions. In situ experimental and theoretical investigations under high pressure have revealed that the application of pressure compresses the lattice structure of DE-Ni-MOF, ultimately leading to the disruption of its layered framework. A binding interaction was established between the confined BCA molecules and the framework after pressure treatment, effectively restricting the vibrational and rotational motions of the BCA molecules. This binding was maintained to atmospheric pressure, and the pressure treatment significantly enhanced the luminescence of BCA.
Authors
- Xiumei Yin (ORCID: https://orcid.org/0000-0003-0515-6218)
- Jinhai Niu (ORCID: https://orcid.org/0000-0002-9248-7244)
- Dedi Liu
- Naisen Yu (ORCID: https://orcid.org/0000-0001-7108-7658)
- Zhen Yao (ORCID: https://orcid.org/0000-0001-8325-9832)
- Tingyu Liu (ORCID: https://orcid.org/0000-0001-8934-6611)
- Quanjun Li (ORCID: https://orcid.org/0000-0002-4718-4156)
- Da‐Peng Dong
- Shuang Liu (ORCID: https://orcid.org/0000-0001-5548-8494)
- Ran Liu (ORCID: https://orcid.org/0000-0001-8150-6799)
- Bo Liu (ORCID: https://orcid.org/0000-0002-8323-5782)
- Zhenghua Li (ORCID: https://orcid.org/0000-0001-7382-4885)
- Bingbing Liu (ORCID: https://orcid.org/0000-0003-3989-0891)
- Zhenyi Zhang (ORCID: https://orcid.org/0000-0003-3606-8966)
- Lei Yue (ORCID: https://orcid.org/0009-0005-2071-1082)
Institutions
- Jilin University (CN)
- Plasma Technology (United States) (US)
- Jilin Medical University (CN)
- V. Bakul Institute for Superhard Materials (UA)
- State Key Laboratory of High Pressure and Superhard Materials (CN)
- Dalian Minzu University (CN)
Publication Details
- Journal
- ACS Materials Letters
- Published
- 2025-04-04
- DOI
- https://doi.org/10.1021/acsmaterialslett.5c00092
- Citations
- 6
- Primary Topic
- Luminescence and Fluorescent Materials
- Type
- article
- Field-Weighted Citation Impact
- 3.11
Funders
- National Natural Science Foundation of China
- Department of Education of Liaoning Province
- Department of Science and Technology of Liaoning Province
- Liaoning Revitalization Talents Program
- Fundamental Research Funds for the Central Universities