Piezochromism in Dynamic Three‐Dimensional Covalent Organic Frameworks
Abstract Piezochromic materials with pressure‐dependent photoluminescence tuning properties are important in many fields, such as mechanical sensors, security papers, and storage devices. Covalent organic frameworks (COFs), as an emerging class of crystalline porous materials (CPMs) with structural dynamics and tunable photophysical properties, are suitable for designing piezochromic materials, but there are few related studies. Herein, we report two dynamic three‐dimensional COFs based on aggregation‐induced emission (AIE) or aggregation‐caused quenching (ACQ) chromophores, termed JUC‐635 and JUC‐636 (JUC=Jilin University China), and for the first time, study their piezochromic behavior by diamond anvil cell technique. Due to the various luminescent groups, JUC‐635 has completely different solvatochromism and molecular aggregation behavior in the solvents. More importantly, JUC‐635 with AIE effect exhibits a sustained fluorescence upon pressure increase (≈3 GPa), and reversible sensitivity with high‐contrast emission differences (Δλ em=187 nm) up to 12 GPa, superior to other CPMs reported so far. Therefore, this study will open a new gate to expand the potential applications of COFs as exceptional piezochromic materials in pressure sensing, barcoding, and signal switching..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:62 |
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| Enthalten in: |
Angewandte Chemie International Edition - 62(2023), 27 |
| Beteiligte Personen: |
Fang, Jing [VerfasserIn] |
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| Anmerkungen: |
© 2023 Wiley‐VCH GmbH |
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| Umfang: |
8 |
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| doi: |
10.1002/anie.202304234 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a Abstract Piezochromic materials with pressure‐dependent photoluminescence tuning properties are important in many fields, such as mechanical sensors, security papers, and storage devices. Covalent organic frameworks (COFs), as an emerging class of crystalline porous materials (CPMs) with structural dynamics and tunable photophysical properties, are suitable for designing piezochromic materials, but there are few related studies. Herein, we report two dynamic three‐dimensional COFs based on aggregation‐induced emission (AIE) or aggregation‐caused quenching (ACQ) chromophores, termed JUC‐635 and JUC‐636 (JUC=Jilin University China), and for the first time, study their piezochromic behavior by diamond anvil cell technique. Due to the various luminescent groups, JUC‐635 has completely different solvatochromism and molecular aggregation behavior in the solvents. More importantly, JUC‐635 with AIE effect exhibits a sustained fluorescence upon pressure increase (≈3 GPa), and reversible sensitivity with high‐contrast emission differences (Δλ em=187 nm) up to 12 GPa, superior to other CPMs reported so far. Therefore, this study will open a new gate to expand the potential applications of COFs as exceptional piezochromic materials in pressure sensing, barcoding, and signal switching. | ||
| 700 | 1 | |a Fu, Zhiyuan |4 aut | |
| 700 | 1 | |a Chen, Xiaohong |4 aut | |
| 700 | 1 | |a Liu, Yaozu |4 aut | |
| 700 | 1 | |a Chen, Fengqian |4 aut | |
| 700 | 1 | |a Wang, Yujie |4 aut | |
| 700 | 1 | |a Li, Hui |4 aut | |
| 700 | 1 | |a Yusran, Yusran |4 aut | |
| 700 | 1 | |a Wang, Kai |4 aut | |
| 700 | 1 | |a Valtchev, Valentin |4 aut | |
| 700 | 1 | |a Qiu, Shilun |4 aut | |
| 700 | 1 | |a Zou, Bo |4 aut | |
| 700 | 1 | |a Fang, Qianrong |4 aut | |
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