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Red Room-Temperature Afterglow Emissions of Polymer-Based Doped Materials by Phosphorescence Förster-Resonance Energy Transfer
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2023-05-14 , DOI: 10.1002/adom.202300284
Xinyue Xu 1 , Weijing Zhang 2 , Miaochang Liu 1 , Yunxiang Lei 1 , Yunbing Zhou 1 , Yan Guan 3 , Xiaobo Huang 1 , Huayue Wu 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2023-05-14 , DOI: 10.1002/adom.202300284
Xinyue Xu 1 , Weijing Zhang 2 , Miaochang Liu 1 , Yunxiang Lei 1 , Yunbing Zhou 1 , Yan Guan 3 , Xiaobo Huang 1 , Huayue Wu 1
Affiliation
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A newly emerged and attractive strategy to obtain afterglow is the use of the Förster-resonance energy transfer (FRET) from an energy donor with room-temperature phosphorescence (RTP) to an energy acceptor with fluorescence. Due to the transfer of energy between molecules with different emissions, it is possible to develop the ultralong and long-wavelength afterglow materials. However, there are few reports on red afterglow materials with emission wavelengths up to 650 nm because of the difficulty of accurate design of chemical structures. Herein, a series of red afterglow materials with emission wavelengths of 650 nm are constructed using polyvinylpyrrolidone as the host, multisubstituted isoquinolines as the guests, and triphenylamine-based dicyanomethylene-4H-pyran derivative as the energy acceptor. Two-component host-guest materials exhibit yellow-green, yellow, and orange RTP with delayed lifetimes of 205-301 ms and phosphorescence quantum yields of 5.3-13.2%, which originate from the guests in a rigid microenvironment provided by the host polymer. Three-component doped materials exhibit red afterglow with a delayed lifetime of 11-83 ms and an emission quantum yield of 16.2-22.1%, which is determined to be delayed fluorescence caused by triplet-to-singlet FRET from isoquinolines to dicyanomethylene-4H-pyran derivative. This work provides inspiration for the development of doped materials with long-wavelength room-temperature afterglow.
中文翻译：
磷光福斯特共振能量转移聚合物基掺杂材料的红色室温余辉发射
一种新出现的、有吸引力的获得余辉的策略是利用福斯特共振能量转移（FRET）从具有室温磷光（RTP）的能量供体到具有荧光的能量受体。由于不同发射的分子之间的能量转移，使得开发超长和长波长余辉材料成为可能。然而，由于化学结构的精确设计困难，关于发射波长达到650 nm的红色余辉材料的报道很少。本文以聚乙烯吡咯烷酮为主体、多取代异喹啉为客体、三苯胺基二氰亚甲基-4 H构建了一系列发射波长为650 nm的红色余辉材料。-吡喃衍生物作为能量受体。双组分主客体材料表现出黄绿色、黄色和橙色的RTP，延迟寿命为205-301 ms，磷光量子产率为5.3-13.2%，其源自主体聚合物提供的刚性微环境中的客体。三组分掺杂材料表现出红色余辉，延迟寿命为11-83 ms，发射量子产率为16.2-22.1%，确定这是由异喹啉到二氰亚甲基-4 H的三重态到单重态FRET引起的延迟荧光-吡喃衍生物。这项工作为开发具有长波长室温余辉的掺杂材料提供了启发。
更新日期：2023-05-14
中文翻译：
磷光福斯特共振能量转移聚合物基掺杂材料的红色室温余辉发射
一种新出现的、有吸引力的获得余辉的策略是利用福斯特共振能量转移（FRET）从具有室温磷光（RTP）的能量供体到具有荧光的能量受体。由于不同发射的分子之间的能量转移，使得开发超长和长波长余辉材料成为可能。然而，由于化学结构的精确设计困难，关于发射波长达到650 nm的红色余辉材料的报道很少。本文以聚乙烯吡咯烷酮为主体、多取代异喹啉为客体、三苯胺基二氰亚甲基-4 H构建了一系列发射波长为650 nm的红色余辉材料。-吡喃衍生物作为能量受体。双组分主客体材料表现出黄绿色、黄色和橙色的RTP，延迟寿命为205-301 ms，磷光量子产率为5.3-13.2%，其源自主体聚合物提供的刚性微环境中的客体。三组分掺杂材料表现出红色余辉，延迟寿命为11-83 ms，发射量子产率为16.2-22.1%，确定这是由异喹啉到二氰亚甲基-4 H的三重态到单重态FRET引起的延迟荧光-吡喃衍生物。这项工作为开发具有长波长室温余辉的掺杂材料提供了启发。
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