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Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
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Toward bidirectional photoswitchable colored photochromic molecules with visible light stability
Tian-Guang Zhan1, Huan-Huan Yin, Si-Tai Zheng
1Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, 688 Yingbin, Road, Jinhua 321004, China. Kangda.Zhang@zjnu.cn.
Chemical Communications (Cambridge, England)
|August 7, 2018
Summary
New photochromic rotaxanes were created with two-way light switching. Their colored states show excellent stability under visible light and heat, confirmed by spectroscopic studies.
Area of Science:
- Molecular Chemistry
- Materials Science
- Photochemistry
Background:
- Photochromic materials change color upon light exposure.
- Rotaxanes are mechanically interlocked molecules with unique properties.
- Bidirectional photoswitchability allows reversible color changes.
Purpose of the Study:
- To synthesize novel photochromic rotaxanes.
- To investigate their bidirectional photoswitching capabilities.
- To evaluate the stability of the colored states.
Main Methods:
- Synthesis of photochromic [2]rotaxanes.
- Spectroscopic analysis (UV-Vis, NMR).
- Thermal stability testing.
Main Results:
- Successful fabrication of photochromic [2]rotaxanes.
- Demonstrated bidirectional photoswitchability.
- Observed remarkable stability of colored states under visible light.
- Confirmed high thermal stability of the colored states.
Conclusions:
- The developed photochromic rotaxanes offer robust and stable color changes.
- These materials are promising for applications requiring durable photochromic properties.
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