Proximity and single-molecule energetics
Proximity and single-molecule energetics
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DOI：
10.1126/science.abj5860
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发表时间：
2021-07
期刊：
影响因子：
56.9
通讯作者：
Linfei Li;Nan Jiang
中科院分区：
文献类型：
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作者：
Linfei Li;Nan Jiang
扫描探针测量附近的氧分子如何影响并五苯的三重态寿命在纳米环境中探测单个分子可以揭示特定位点的现象，而这些现象可能会被宏观分子群的整体平均实验所掩盖。特别是在过去的十年中，扫描探针显微镜 (SPM) 的重大技术突破带来了前所未有的空间分辨率和多功能性，并使得能够研究分子构象、键序、分子轨道、电荷态、自旋、声子和分子间相互作用。在本期第 452 页，Peng 等人。 (1) 使用 SPM 直接测量单个并五苯分子的三线态寿命，并以原子精度证明其对与附近氧分子相互作用的依赖性。除了允许对分子之间的自旋-自旋相互作用进行局部调整和探测之外，这项研究还代表了单分子领域的显着进步，并为催化、能量转换材料或生物系统中的许多宏观行为和相关应用提供了见解。
Scanning probes measure how nearby oxygen molecules affect triplet lifetimes of pentacene Probing single molecules in their nanoenvironment can reveal site-specific phenomena that would be obscured by ensemble-averaging experiments on macroscopic populations of molecules. Particularly in the past decade, major technological breakthroughs in scanning probe microscopy (SPM) have led to unprecedented spatial resolution and versatility and enabled the interrogation of molecular conformation, bond order, molecular orbitals, charge states, spins, phonons, and intermolecular interactions. On page 452 of this issue, Peng et al. (1) use SPM to directly measure the triplet lifetime of an individual pentacene molecule and demonstrate its dependence on interactions with nearby oxygen molecules with atomic precision. In addition to allowing the local tuning and probing of spin-spin interactions between molecules, this study represents a notable advance in the single-molecule regime and provides insights into many macroscopic behaviors and related applications in catalysis, energy-conversion materials, or biological systems.