Citation: Xiong Xiao, Wei Zheng, Yue Zhao, Cheng-Hui Li. Visible light responsive spiropyran derivatives based on dynamic coordination bonds[J]. Chinese Chemical Letters, ;2023, 34(2): 107457. doi: 10.1016/j.cclet.2022.04.055 shu

Visible light responsive spiropyran derivatives based on dynamic coordination bonds

State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China

chli@nju.edu.cn

Received Date: 26 March 2022
Revised Date: 17 April 2022
Accepted Date: 22 April 2022
Available Online: 27 April 2022

Figures(4)

Spiropyrans (SPs) are a well-known class of photochromic compounds and have found widespread application due to their unique properties. However, for many conventional SPs, high energy ultraviolet (UV) light is commonly essential to drive photoisomerization, leading to poor fatigue resistance. Moreover, the practical application of spiropyrans is hindered by their fast fading speed due to the instability of closed forms (SP) or open forms (MC). Herein, we disclose a novel strategy to address these challenges through introducing both electron-donating substituents to stabilize the SP and dynamic coordination bonds to stabilize the MC. The resulting new spiropyrans complexes exhibit negative photochromic properties, with fast visible light response, good stability of both SP and MC, and significantly improved fatigue resistance.
- Negative photochromic,
- Spiropyran,
- Visible light responsive,
- Dynamic coordination bonds,
- Design guidelines
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