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- Title
Fluorescence-based monitoring of the pressure-induced aggregation microenvironment evolution for an AIEgen under multiple excitation channels.
- Authors
Tong, Shuang; Dai, Jianhong; Sun, Jiangman; Liu, Yuanyuan; Ma, Xiaoli; Liu, Zhehong; Ma, Teng; Tan, Jiao; Yao, Zhen; Wang, Shanmin; Zheng, Haiyan; Wang, Kai; Hong, Fang; Yu, Xiaohui; Gao, Chunxiao; Gu, Xinggui
- Abstract
The development of organic solid-state luminescent materials, especially those sensitive to aggregation microenvironment, is critical for their applications in devices such as pressure-sensitive elements, sensors, and photoelectric devices. However, it still faces certain challenges and a deep understanding of the corresponding internal mechanisms is required. Here, we put forward an unconventional strategy to explore the pressure-induced evolution of the aggregation microenvironment, involving changes in molecular conformation, stacking mode, and intermolecular interaction, by monitoring the emission under multiple excitation channels based on a luminogen with aggregation-induced emission characteristics of di(p-methoxylphenyl)dibenzofulvene. Under three excitation wavelengths, the distinct emission behaviors have been interestingly observed to reveal the pressure-induced structural evolution, well consistent with the results from ultraviolet-visible absorption, high-pressure angle-dispersive X-ray diffraction, and infrared studies, which have rarely been reported before. This finding provides important insights into the design of organic solid luminescent materials and greatly promotes the development of stimulus-responsive luminescent materials. The develop of organic functional materials requires the exploration of the pressure dependent emissive mechanisms of molecular structures, conformations and stacking modes. Here, Tong et al propose a strategy for monitoring the pressure-induced fluorescence under multiple excitation channels.
- Subjects
MOLECULAR conformation; PHOTOELECTRIC devices; MOLECULAR structure; INTERMOLECULAR interactions; X-ray diffraction
- Publication
Nature Communications, 2022, Vol 13, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-022-32968-9