二维电子光谱技术进展

The development of two-dimensional electronic spectroscopy

傅里叶变换二维电子光谱(即二维电子光谱)是一种探测激发态动力学的三阶非线性光谱技术,近年来,被广泛应用于光合作用、光伏电池、量子点、低维材料与极化基元等领域中,已成为了研究分子相互作用与激发态动力学的重要工具.本文针对二维电子光谱的特点与难点,系统梳理了近二十五年来发展的大部分实验技术,并对其进行了分类介绍.本文首先介绍了二维电子光谱的原理;然后,介绍了其发展过程;接着,对二维电子光谱技术进行了梳理,并进行了分类介绍;最后,文章比较了不同方法之间的优缺点.本文期望通过对技术的系统介绍,让领域内外的读者能更好地理解二维光谱,进而促进该技术的发展,并让其在更多领域内发挥作用.

Fourier transform two-dimensional electronic spectroscopy(2DES)is a third-order nonlinear spectroscopic technique that probes excited-state dynamics.In recent years,it has been applied in fields including photosynthesis,photovoltaic cells,quantum dots,low-dimensional materials,and polaritons,and has become a powerful tool for studying intermolecular interactions and photo-initiated dynamics.In this review article,we categorize the two-dimensional electronic spectroscopic methods developed in the past 25 years and systematically introduce different kinds of techniques based on their technical characteristics.We first introduce the principle of 2DES and then briefly review the history of the development of 2DES.Thirdly,we sort out most of the experimental techniques and introduce different methods based on their classifications.Finally,we compare the advantages and disadvantages of different 2DES techniques.Through a systematic review,we aim to pave the way for the readers toward a better understanding of 2DES,facilitate the development of this technique and expand its applications to wider fields.