Learning from Spiropyrans: How to Make Further Developments of Donor‐Acceptor Stenhouse Adducts,Chinese Journal of Chemistry

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Learning from Spiropyrans: How to Make Further Developments of Donor‐Acceptor Stenhouse Adducts
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-11-06 , DOI: 10.1002/cjoc.202000532
Yongli Duan ₁ , Haiquan Zhao ₁ , Chaoyue Xiong ₁ , Lijun Mao ₁ , Dongsheng Wang _{1,

2} , Yonghao Zheng ₁

Affiliation

Donor‐acceptor Stenhouse adducts (DASAs) as a species of novel photochromic molecules, have been developing rapidly and attracting broad researchers’ sights since 2014. DASAs show visible/near‐infrared (NIR) light induced linear‐to‐cyclic isomerization and heat induced cyclic‐to‐linear isomerization, therefore they are attractive in photoresponsive hydrogels, drug delivery, cell culturing and tissue engineering. As a series of well‐known photoresponsive molecules, spiropyrans (SPs) show similar molecular properties and comparable photoswitching with DASAs. UV light triggers closed‐to‐open (also known as spirocyclic (SC)‐to‐merocyanine (MC)) isomerization of SPs, while the reversed open‐to‐closed isomerization occurs under visible light or heat. Light irradiation switches the molecular color, scale, geometry, and polarity of SPs and DASAs reversibly. Since the researches on DASAs are still in the infancy, the chemical structures, isomerization mechanisms and potential applications need to be further investigated and explored. The well‐studied SPs have important reference values to the comprehensive developments of DASAs. In the present review, we summarized, compared and discussed SPs and DASAs with regards to their molecular structures, synthesis, photoswitching and applications. We also make our perspective on the developments of DASA in future.

中文翻译：

向螺旋藻学习：如何进一步发展供体-受体Stenhouse加合物

施主-受主斯腾豪斯加合物（DASAs）作为一个物种新颖的光致变色分子，都得到了迅速发展和广泛的吸引研究人员的视域2014年以来显示DASAs近红外（NIR）可见光/光诱导的线性-到-环状异构化和热致环状到线性异构化，因此它们在光响应水凝胶，药物递送，细胞培养和组织工程学中具有吸引力。螺吡喃（SP）是一系列著名的光响应分子，显示出相似的分子特性，并且具有与DASA相当的光开关性能。紫外线触发从关闭到打开（也称为螺旋（SC）到部花青（MC SP的））异构化，而反向的开-到-闭合异构化下可见光或热发生。光照射可逆地改变SP和DASA的分子颜色，规模，几何形状和极性。由于DASAs的研究仍处于起步阶段，因此需要进一步研究和探索其化学结构，异构化机理和潜在应用。深入研究的SP对于DASA的全面发展具有重要的参考价值。在本综述中，我们总结，比较和讨论了SP和DASA的分子结构，合成，光开关和应用。我们也对DASA的未来发展提出了自己的看法。

更新日期：2020-11-06

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