Noble metal nanoclusters have attracted great attentions in the area of fluorescence related applications due to their special properties such as low toxicity, excellent photostability and bio-compatibility. However, they still describe disadvantages for low quantum yield compared to quantum dots and organic dyes though the brightness of the fluorescence play an important role for the efficiency of the applications. Attentions have been attracted for exploring strategies to enhance the fluorescence based on the optical fundamentals through various protocols. Some methods have already been successfully proposed for obtaining relative highly fluorescent nanoclusters, which will potentially describe advantages for the application. In this review, we summarize the approach for enhancement of the fluorescence of the nanoclusters based on the modification of the properties, improvement of the synthesis process and optimization of the environment. The limitation and directions for future development of the fabrication of highly fluorescent metal nanoclusters are demonstrated.

贵金属纳米簇由于其低毒性，优异的光稳定性和生物相容性等特殊性能而在荧光相关应用领域引起了极大的关注。然而，尽管荧光的亮度对于应用的效率起着重要的作用，但他们仍然描述了与量子点和有机染料相比，量子产率低的缺点。通过各种方案探索基于光学基本原理增强荧光的策略已经引起了人们的注意。已经成功地提出了一些方法来获得相对高荧光的纳米团簇，这将潜在地描述该应用的优点。在这篇评论中，我们总结了基于性质改变，合成工艺改进和环境优化的增强纳米团簇荧光的方法。证明了高荧光金属纳米团簇的制备的局限性和未来发展方向。