二维电子光谱技术进展

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.