Abstract Noteworthy new progress in 2D correlation spectroscopy (2D-COS) and its versatile applications for the last two years are compiled in this comprehensive survey review. We report the new and significant concepts of 2D-COS, various 2D-COS software and useful display techniques, and numerous applications of 2D-COS in various external perturbations, analytical methods, and systems. Applications of 2D-COS in fluorescence spectroscopy have noticeably increased, as well as applications of 2D-COS to field closely related to daily life, such as environmental, medical, and food, are greatly increased. 2D-COS is continuously evolving and growing with new developments and successful applications in various scientific fields. Diverse studies using 2D-COS would surely open a new promising way for in-depth studies of various materials and systems in many applications.

中文翻译：

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二维相关光谱 (2D-COS) 的新兴发展

摘要 本综合调查综述汇总了过去两年在二维相关光谱 (2D-COS) 及其多功能应用方面取得的显着新进展。我们报告了 2D-COS 的新的重要概念、各种 2D-COS 软件和有用的显示技术，以及 2D-COS 在各种外部扰动、分析方法和系统中的众多应用。2D-COS在荧光光谱中的应用显着增加，2D-COS在与日常生活密切相关的环境、医疗、食品等领域的应用也大大增加。2D-COS随着各个科学领域的新发展和成功应用而不断发展和成长。