Stable Boron-Containing Blue-Photoluminescent Radicals

• 作者: Zhongtao Feng Yuanyuan Chong Shuxuan Tang Huapeng Ruan Yong Fang Yue Zhao Jun Jiang Xinping Wang
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: Concise Reports
• 页码范围: 1297-1302
• 页数: 6页
• 语种: 英文
• DOI: 10.1002/cjoc.202100188

摘要

Main observation and conclusion It is highly urgent to develop synthetic strategies to make new category of stable luminescent radicals with desired emission wavelength.In this study,we have isolated two dioxoborocyclic radicals (3 and 4) by a direct synthetic route.They were charac-terized by UV,EPR spectroscopy and SQUID measurements.Their structures were obtained by single-crystal X-ray diffraction.Both radicals produce blue-photoluminescence (458 nm for 3 and 478 nm for 4) by radiative decay from higher excited states(D2/D3) to the ground state (Do) based on theoretical calculation,breaking Kasha rule.The work records a new kind of radical emitters and the first stable radicals with blue emission bands.