Preparations and photophysical properties of thermally activated delayed fluorescence materials based on N-phenyl-phenothiazine-S,S-dioxide

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• 作者：Zhilin Lu ; Dandan Fang ; Yueyou Zheng ; Yanqiao Jin ; Bingxi Wang ; ^{wangbx08@163.com}
• 关键词：Sulfone ; ΔEST ; TADF ; Delayed fluorescence lifetime
• 刊名：Tetrahedron
• 出版年：2017
• 出版时间：5 January 2017
• 年：2017
• 卷：73
• 期：1
• 页码：21-29
• 全文大小：2513 K
• 卷排序：73

文摘

Four compounds containing a sulfone moiety in a rigid 6-membered ring are synthesized and three of them exhibit TADF characteristics. Short delayed fluorescent lifetimes are obtained ranging from 0.69 μs to 1.16 μs. The energy gaps between singlet and triplet excited states are tuned within 0.09–0.18 eV by addition of trifluoromethyl on N-phenyl. One blue TADF compound is acquired with an emission wavelength of 475 nm.