Yang Tai-Qun, Peng Bo, Shan Bing-Qian, Zong Yu-Xin, Jiang Jin-Gang, Wu Peng, Zhang Kun
Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
Nanomaterials (Basel). 2020 Feb 4;10(2):261. doi: 10.3390/nano10020261.
Recently, metal nanoclusters (MNCs) emerged as a new class of luminescent materials and have attracted tremendous interest in the area of luminescence-related applications due to their excellent luminous properties (good photostability, large Stokes shift) and inherent good biocompatibility. However, the origin of photoluminescence (PL) of MNCs is still not fully understood, which has limited their practical application. In this mini-review, focusing on the origin of the photoemission emission of MNCs, we simply review the evolution of luminescent mechanism models of MNCs, from the pure metal-centered quantum confinement mechanics to ligand-centered p band intermediate state (PBIS) model via a transitional ligand-to-metal charge transfer (LMCT or LMMCT) mechanism as a compromise model.
近年来，金属纳米团簇（MNCs）作为一类新型发光材料崭露头角，因其优异的发光性能（良好的光稳定性、大斯托克斯位移）和固有的良好生物相容性，在发光相关应用领域引起了极大关注。然而，MNCs的光致发光（PL）起源仍未完全明确，这限制了它们的实际应用。在本综述中，我们聚焦于MNCs的光发射起源，简要回顾了MNCs发光机制模型的演变，从纯金属中心的量子限域机制，经由作为折衷模型的过渡性配体到金属电荷转移（LMCT或LMMCT）机制，再到配体中心p带中间态（PBIS）模型。
