廖良生教授与王雪东教授合作在Angew. Chem. Int. Ed.上发表论文

发布时间:2022-11-18访问量:165设置

题目:

Excited-State Intramolecular Proton Transfer Parent Core Engineering for Six-Level System Lasing Toward 900 nm

作者:

Chang-Cun Yan1,#, Yan-Ping Liu2,#, Wan-Ying Yang1,#, Jun-Jie Wu1, Xue-Dong Wang1,*,and Liang-Sheng Liao1,3,*

单位:

1Institute of Functional Nano & Soft Materials, Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren’ai Road, Suzhou, 215123, Jiangsu (P. R. China)

2State Key Laboratory of Modern Optical Instrumentation, Key Laboratory of Excited-State Materials of Zhejiang Province, Department of Chemistry, Zhejiang University Hangzhou, 310027, Zhejiang (P. R. China)

3Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa 999078, Macau SAR (P. R. China)

摘要:

Organic molecules which can undergo excited-state intramolecular proton transfer (ESIPT) process have been considered as ideal gain materials for near-infrared organic lasers owing to their effective four-level systems. However, extending lasing wavelength beyond 800 nm with present ESIPT-active gain materials is still in challenge. Herein, we established a molecular design strategy that operates via extending the π-conjugated system of the ESIPT parent core to enhance the cascaded double ESIPT process and thus to achieve the red-shifted six-level system lasing. Concretely, a model molecule with 1,9-dihydroxyanthracene as the ESIPT parent core was designed and synthesized, which was proved to undergo twice cascaded ESIPT processes while the 1,8-dihydroxynaphthalene-based analogue can only undergo once ESIPT process based on DFT calculations and ultrafast dynamics analyses. Finally, a six-level system lasing toward 900 nm was achieved with a low threshold of 27.4 μJ cm2.

影响因子:

15.336

分区情况:

一区

链接:

https://onlinelibrary.wiley.com/doi/10.1002/anie.202210422



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