Switchable room-temperature phosphorescence in photochromic coordination polymers based on electron transfer
Xiao-Lei Xu1, Ya-Ping Du1, Jin-Ke Yang1
1College of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Intelligent Molecular Science and Engineering, Qingdao University Qingdao, Shandong, 266071, P. R. China. mayujuan@qdu.edu.cn.
Two new cadmium(II)-based coordination polymers show reversible photochromism and long-lived room-temperature phosphorescence. This dynamic switching offers potential for advanced information encryption and anti-counterfeiting applications.
Area of Science:
- Materials Science
- Chemistry
- Photophysics
Background:
- Coordination polymers (CPs) are advanced materials with tunable properties.
- Photochromism and room-temperature phosphorescence (RTP) are desirable optical functionalities.
- Developing materials with switchable optical properties is crucial for advanced applications.
Purpose of the Study:
- Synthesize novel cadmium(II)-based coordination polymers.
- Investigate their photochromic and phosphorescent properties.
- Explore their potential in information encryption and anti-counterfeiting.
Main Methods:
- Solvothermal synthesis of cadmium(II)-based coordination polymers.
- Photochromism studies involving light irradiation.
- Photoluminescence spectroscopy to analyze RTP.
- Investigating the dynamic switching between photochromic and RTP states.
Main Results:
- Successfully synthesized two new Cd(II)-based CPs.
- Observed electron transfer-induced photochromism in the CPs.
- Demonstrated long-lived room-temperature phosphorescence (RTP).
- Showcased dynamic switching of RTP by regulating the photochromic process.
Conclusions:
- The synthesized CPs exhibit dual photoresponsive properties.
- The dynamic interplay between photochromism and RTP is successfully demonstrated.
- These materials hold significant promise for multi-level information encryption and dynamic anti-counterfeiting technologies.
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