论文标题
打破等离子纳米腔中自旋 - 孔孔吸收的选择规则
Breaking the Selection Rules of Spin-Forbidden Molecular Absorption in Plasmonic Nanocavities
论文作者
论文摘要
控制有机分子的吸收和发射对于有效发光二极管，有机太阳能电池和单分子光谱至关重要。在这里，新的分子吸收在金等离子体纳米腔内被激活，并通过自旋轨道耦合破坏了选择规则。光致发光激发扫描显示，正常旋转的单线从三胞胎状态过渡中吸收，同时大幅提高了发射速率。实验结果由密度功能理论支持，揭示了附近金属金原子对分子吸收的操纵。
Controlling absorption and emission of organic molecules is crucial for efficient light-emitting diodes, organic solar cells and single-molecule spectroscopy. Here, a new molecular absorption is activated inside a gold plasmonic nanocavity, and found to break selection rules via spin-orbit coupling. Photoluminescence excitation scans reveal absorption from a normally spin-forbidden singlet to triplet state transition, while drastically enhancing the emission rate by several thousand fold. The experimental results are supported by density functional theory, revealing the manipulation of molecular absorption by nearby metallic gold atoms.
