Intramolecular proton transfer: a reliable solution to design all-visible-light-activated dithienylethenes

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2020,（4）
• 页码范围: 421-422
• 页数: 2页
• 语种: 英文

摘要

In the fields of materials science and life science,the ability to influence key properties of molecular systems by using light is of great significance.Photochromic compounds play a key role in such systems since they can reversibly photoisomerize between two states [1].Among photochromic series,dithienylethenes (DTEs) can undergo reversible conrotatory 6π photocyclization and cycloreversion have drawn much attention due to the excellent thermal irreversibility and outstanding fatigue resistance [2].Generally,ultraviolet (UV) light is necessary to switch the photocyclization while the cycloreversion relies on visible light.Given that UV light is of photo-damage,low-transparency and shallow tissue penetration,using all visible light to trigger these photoreactions is more advantageous in recent promising development of bioreagents,bio-materials and other light-regulated applications [3].