Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 8, Issue 31, Pages 10798-10804Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9tc06627f
Keywords
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Funding
- National Funds for Distinguished Young Scientists [61825503]
- National Natural Science Foundation of China [21701087, 61775101]
- Natural Science Foundation of Jiangsu Province of China [BK20160885]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [YX030003]
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Thermochromic luminescent materials (TLMs) demonstrate great potential for various photonic applications, especially in security information protection. In particular, the development of TLMs with more than two emission states and controllable response behavior is of great significance. However, it is still difficult and challenging to achieve the desired properties due to the lack of a proper design strategy. Here, we propose a simple and effective method to prepare TLMs, which involves the blending of polyethylene glycol (PEG) with a metal-ligand Fe(iii) complex. The constructed TLMs exhibit three emission states of non-fluorescence, and blue and cyan emission colors, respectively, at different temperatures. Additionally, TLMs with various thermochromic transition temperatures can be easily obtained by using PEG matrices with different molecular weights. Ultimately, we demonstrate that these TLMs show immense potential in real-life anti-counterfeiting and security information printing. This work opens opportunities for achieving novel smart responsive materials with multiple emission states and controllable response behavior for advanced photonic applications.
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