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China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (5): 443-449.doi: 10.3969/j.issn.1001-1803.2021.05.012

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Novel photoswitchable molecules DASA: synthesis, properties and functional applications

MIN Fan(),HUANG Hai-kang,WANG De-qi,CHU Zong-lin()   

  1. Department of Applied Chemistry, Hunan University, Changsha, Hunan 410082, China
  • Received:2021-08-18 Revised:2021-04-30 Online:2021-05-22 Published:2021-05-21
  • Contact: Zong-lin CHU E-mail:m1709010309@hnu.edu.cn;zchu@hnu.edu.cn

Abstract:

Donor-Acceptor Stenhouse Adducts (DASA) are a novel type of photoswitchable compounds that consist of donors, acceptors and triene-enol bridges. The triene-enol chain could be destroyed by absorbing visible light, resulting in structural transformation from colored linear structure to the colorless cyclic structure. The colorless cyclic structure could reverse to linear structure in the dark environment through thermal relaxation. Such unique photoswitchable properties impart them great potential in the areas of smart materials, biosensors, drug delivery, supramolecular chemistry, catalysis, and surface technology. They are able to control the microfluidic systems due to the change of polarity after irradiation, and their green-light responsive character can avoid the damage by ultraviolet radiation, which makes them proper drug delivery controller compared to traditional UV-responsive photoswitches. In this review, we have summarized the synthesis, photoswitchable behaviors and functional applications of DASA, and we also point out the future trends in this field.

Key words: Donor-Acceptor Stenhouse Adducts (DASA), molecular photoswitch, photochromism, donor-acceptor

CLC Number: 

  • O641