一種簡單有機晶體中靈敏可重複的光致發光自由基
作者：
小柯機器人發布時間：2020/12/6 22:42:26
中山大學化學學院池振國研究團隊揭示了一種簡單有機晶體中產生的敏感、可重複的光致發光自由基。 相關論文於2020年12月03日發表於國際頂尖學術期刊《德國應用化學》。
光誘導有機自由基在有機材料物理化學過程中起著重要的作用，在有機合成、光電子器件、生物技術等領域有著廣泛的研究和應用。然而，關於這些光誘導自由基的發光研究卻鮮有報導，尤其是在凝聚態下。
研究人員描述了一種意想不到的有趣的發光自由基，它可以快速而可逆地從一種簡單的有機晶體中通過溫和的光照射在空氣中生成。結果表明，晶體中孤立分子的扭曲和不對稱構象只有微弱的C‐H···m分子間相互作用，從而導致了這種光致發光自由基的產生。另外，基於這種有機晶體的薄膜可以獲得響應迅速、重複性好的雙通道光敏器件，在發光和導電方面均顯示出光開關特性。
附：英文原文
Title: Sensitive and Repeatable Photoinduced Luminescent Radicals from A Simple Organic Crystal
Author: Yingxiao Mu, Yanyan Liu, Haiyan Tian, Depei Ou, Li Gong, Juan Zhao, Yanping Huo, Yi Zhang, Zhiyong Yang, Zhenguo Chi
Issue&Volume: 03 December 2020
Abstract: Photoinduced organic radicals are important for chemical and physical processes of organic materials, which are extensively investigated and applied in organic synthesis, photoelectronic devices, and biotechnology. However, there are rare reports of the luminescence for these photoinduced radicals, especially in the condensed state. Herein, an unexpected and interesting luminescent radical is described, which can be rapidly and reversibly generated from a simple organic crystal by gentle light irradiation in air. It was revealed that the twist and asymmetric conformation of isolated molecule in its crystal with only weak C‐H···π intermolecular interactions, which led to the generation of such photoinduced luminescent radicals. In addition, dual‐channel photosensitive device with rapid response and well repeatability can be obtained based on the thin film of this organic crystal, showing both photoswitching on luminescence and conducting.
DOI: 10.1002/anie.202014720
Source: https://www.onlinelibrary.wiley.com/doi/10.1002/anie.202014720