廖良生教授、王雪东副教授合作在Angew. Chem. Int. Ed.上发表论文

题目：

Cascaded Excited-State Intramolecular Proton Transfer Towards Near-Infrared Organic Lasers Beyond 850 nm

作者：

Jun-Jie Wu^{+, 1}, Ming-Peng Zhuo^{+, 1}, Runchen Lai³, Sheng-Nan Zou¹, Chang-Cun Yan¹, Yi Yuan¹, Sheng-Yi Yang¹, Guo-Qing Wei¹, Xue-Dong Wang^{*, 1}, Liang-Sheng Liao^{*, 1, 2}

单位：

¹Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, Jiangsu 215123, (P. R. China)

²Institute of Organic Optoelectronics, JITRI, Wujiang Suzhou, Jiangsu 215211 (P. R. China)

³Dalian Institute of Chemical Physics (DICP), Chinese Academy of Sciences, Dalian, Liaoning 116000, (P. R. China)

摘要：

Near-infrared (NIR) organic solid-state lasers play an essential role in applications ranging from laser communication to infrared night vision, but progress in this area is restricted by the lack of effective excited-state gain processes. Herein, we originally proposed and demonstrated the cascaded occurrence of excited state intramolecular proton transfer for constructing the completely new energy-level systems. Cascading by the first ultrafast proton transfer of <430 fs and the subsequent irreversible second proton transfer of ~1.6 ps, the stepwise proton transfer process favors the true six-level photophysical cycle, which supports efficient population inversion and thus NIR single-mode lasing at 854 nm. This work realizes longest wavelength beyond 850 nm of organic single-crystal lasing to date and originally exploits the cascaded excited-state molecular proton transfer energy-level systems for organic solid-state lasers.

影响因子：

12.959

分区情况：

一区

链接：

https://onlinelibrary.wiley.com/doi/10.1002/anie.202016786