Novel two-dimensional fluorescence excitation technique enhances spectral attribution in electronic dynamics, suggesting improved detection methods.
Two-dimensional electronic spectroscopy (2DES) has been utilized to track the dynamics of electronic excitations. However, 2DES often faces difficulties in spectral attribution due to the limitations of transient absorption detection. Therefore, the fluorescence-detected 2DES is long-awaited, and its performance can be further improved, especially by using a broadband excitation light source. In this study, we developed a two-dimensional fluorescence excitation (2DFLEX) spectroscopy by combining white-light excitation and Kerr-gate detection. This novel approach utilizes the white light generated from high-repetition-rate Yb amplifier lasers, offering both broad bandwidth and high stability. 2DFLEX has a selectivity for the stimulated emission process, allowing only excited-state information to be extracted. This novel two-dimensional spectroscopy represents a significant advancement in fluorescence-detected 2DES, potentially enhancing our ability to investigate complex electronic dynamics.
No takes yet. Share an insight, caveat, or question.
Yoshida et al. (2025) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: