Choi Jinho, Im Healin, Heo Jung-Moo, Kim Do Wan, Jiang Hanjie, Stark Alexander, Shao Wenhao, Zimmerman Paul M, Jeon Gi Wan, Jang Jae-Won, Hwang Euy Heon, Kim Sunkook, Park Dong Hyuk, Kim Jinsang
Department of Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea.
Program in Biomedical Science & Engineering, Inha University, Incheon, 22212, Republic of Korea.
Nat Commun. 2024 Dec 2;15(1):10282. doi: 10.1038/s41467-024-51501-8.
Efficient light generation from triplet states of organic molecules has been a hot yet demanding topic in academia and the display industry. Herein, we propose a strategy for developing triplet emitter by creating heterostructures of organic chromophores and transition metal dichalcogenides (TMDs). These heterostructures emit microsecond phosphorescence at room temperature, while their organic chromophores intrinsically exhibit millisecond phosphorescence under vibration dissipation-free conditions. This enhancement in phosphorescence is indicative of significantly enhanced spin-orbit coupling efficiency through coupling with TMDs. Through detailed studies on these hybrids from various perspectives, we elucidate key features of each component essential for generating microsecond triplet emission, including 2H-TMDs with heavy transition metals and aromatic carbonyl with an ortho-hydroxy group. Our intriguing findings open avenues for exploring the universal applicability of fast and stable hybrid triplet emitters.
从有机分子的三重态高效产生光，一直是学术界和显示行业中一个热门但颇具挑战性的课题。在此，我们提出了一种通过创建有机发色团与过渡金属二硫属化物（TMD）的异质结构来开发三重态发光体的策略。这些异质结构在室温下发射微秒级磷光，而其有机发色团在无振动耗散条件下本征地表现出毫秒级磷光。这种磷光增强表明通过与TMD耦合，自旋 - 轨道耦合效率显著提高。通过从各个角度对这些杂化物进行详细研究，我们阐明了产生微秒级三重态发射所必需的每个组分的关键特性，包括具有重过渡金属的2H - TMD和带有邻羟基的芳族羰基。我们有趣的发现为探索快速且稳定的杂化三重态发光体的普遍适用性开辟了途径。
