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Multicolor Phosphorescence Modulated by Excitation and Temperature in Zn-Based Coordination Polymers
Shi-Dong Wang1, Zhen-Zhen Xue1, Ying Mu1
1College of Chemistry and Chemical Engineering, Qingdao University, Qingdao, Shandong 266071, P. R. China.
Inorganic Chemistry
|October 11, 2023
Summary
Researchers developed new zinc-based coordination polymers (CPs) for color-tunable room-temperature phosphorescence (RTP). These materials exhibit multicolor and multiresponsive properties, offering a novel strategy for advanced luminescent applications.
Area of Science:
- Materials Science
- Chemistry
- Solid-State Physics
Background:
- Color-tunable room-temperature phosphorescence (RTP) is crucial for various applications but remains challenging to achieve.
- Understanding the structure-property relationship is key to designing effective RTP materials.
- Metal-organic coordination polymers (CPs) offer a versatile platform for constructing sophisticated luminescent materials due to their tunable structures.
Purpose of the Study:
- To synthesize and characterize novel zinc-based coordination polymers (CPs) for color-tunable room-temperature phosphorescence (RTP).
- To investigate the correlation between molecular structure and luminescence properties in these CPs.
- To explore strategies for achieving multicolor and multiresponsive phosphorescence in CPs.
Main Methods:
- Synthesis of three zinc-based coordination polymers (CPs) incorporating halogen atoms and a flexible tetradentate ligand.
- Characterization of the crystal structures and luminescent properties of the synthesized CPs.
- Analysis of structure-property relationships, including emission origins from isolated/dimerized chromophores and charge transfers.
Main Results:
- All synthesized CPs exhibited two constant emission regions and one excitation-dependent emission region.
- Luminescence properties were attributed to isolated chromophores, dimerized chromophores, and various charge transfer mechanisms.
- The phosphorescence colors of the CPs were successfully modulated by altering excitation wavelengths and temperature.
Conclusions:
- The study presents a novel strategy for developing multicolor and multiresponsive RTP materials using metal-organic coordination polymers.
- The synthesized zinc-based CPs demonstrate tunable phosphorescence, paving the way for advanced luminescent devices.
- The findings highlight the importance of molecular design in achieving controllable photophysical properties in coordination polymers.
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