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普通光学显微镜的分辨率极限只有~200 nm,在应用方面显得越来越不足。为了突破这一限制,发展了单微发光体光学超分辨成像技术,其原理是通过精确地得到众多单个微小发光体(如单个荧光分子)的位置来进行成像,分辨率约几十nm,甚至可小于1 nm。当有荧光分子参与催化反应的时候,即可采用该技术研究催化活性在纳米粒子上的分布,以及动力学相关的问题。目前,该技术已经在金属纳米粒子的催化、分子筛催化、光催化等领域得到应用,且已经展现出优越的特性。
相关文献:
10. X. Zhou, E. Choudhary, N. M. Andoy, N. Zou, P. Chen, “Scalable Parallel Screening of Catalyst Activity at the Single-Particle Level and Sub-diffraction Resolution”, ACS Catalysis, 2013, 3, 1448-1453.
9. Xiaochun Zhou, Nesha May Andoy, Guokun Liu, Eric Choudhary, Kyu-Sung Han, Hao Shen, Peng Chen, "Quantitative Super-resolution Imaging Uncovers Reactivity Patterns on Single Nanocatalysts", Nature Nanotechnology, 2012, 7, 237-241.
8. N. M. Andoy, X. Zhou, E. Choudary, H. Shen and P. Chen, Single-Molecule Catalysis Mapping Quantifies Site-specific Activity and Uncovers Radial Activity Gradient on Single 2D Nanocrystals, Journal of the American Chemical Society, 2013, 135, 1845-1852
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