【摘要】 手性在生命科学、量子器件以及其他各个领域都有广泛的应用.传统上,分子手性可以通过稳态圆二色性光谱来表征.由于能够提供手性产生和转移的动态信息,表征激发态手性的技术正逐渐引起公众的兴趣.本综述重点介绍了飞秒时间分辨圆二色性光谱技术的理论背景和在全球范围内的发展历程.此外,本文举例说明这些技术在动态分子化学结构分析、分子手性生成研究以及半导体量子点电子自旋动态探测中的应用.更多还原

【Abstract】 Chirality hold broad applications in life sciences,quantum devices,and various other areas.Traditionally,molecular chirality can be characterized by using steady-state circular dichroism spectroscopy.However,the techniques that can characterize excited state chirality are progressively capturing the public interest as it can provide the dynamic information for chirality generation and transfer.In this review,we focus on the theoretical background and the developmental history of femtosecond time-resolved circular dichroism spectroscopy(TRCD) techniques around the world.Additionally,we provide examples to showcase the utility of these techniques in the analysis of the dynamical molecular chemical structures,the investigation of molecular chirality generation,and the detection of electron spin dynamics in semiconductor quantum dots.更多还原