Highly Efficient Photochromism of a Crown Ether-derived Azobenzene in Langmuir-Blodgett Films

Chem. J. Chinese Universities ›› 1995, Vol. 16 ›› Issue (S1): 107.

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Highly Efficient Photochromism of a Crown Ether-derived Azobenzene in Langmuir-Blodgett Films

WANG Yong-qiang, YU Hua-zhong, LUO Ying, CHENG Ji-zhi, CAI Sheng-min, LIU Zhong-fan

Electrophotonic Intelligent Materials Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China

Received:1995-08-05 Online:1995-12-31 Published:1995-12-31
Supported by:
State Science & Technology Committee, the State Education Committee and the National Natural Science Foundation of China

Abstract

Abstract:

A novel crown ether-azobenzene derivative (CAD) was synthesized. It was formed in a stable monolayer at air-water interface, and could be transferred to both ITO glasses and CaF₂ substrates with near unity of transfer ratio. Under irradiations of UV and visible light,the CAD molecules showed a highly efficient photochromic behavior in the rigid Langmuir-Blodgett films.The trans-cis conversion rate reached 76%,comparable with that obtained in chloroform solution.

Key words: Crown ether-derived azobenzene, Langmuir-Blodgett film, Photochromism

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WANG Yong-qiang, YU Hua-zhong, LUO Ying, CHENG Ji-zhi, CAI Sheng-min, LIU Zhong-fan. Highly Efficient Photochromism of a Crown Ether-derived Azobenzene in Langmuir-Blodgett Films[J]. Chem. J. Chinese Universities, 1995, 16(S1): 107.

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Highly Efficient Photochromism of a Crown Ether-derived Azobenzene in Langmuir-Blodgett Films

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