太赫兹光谱技术在自由基检测中的应用

Terahertz spectroscopy——a new method for free radical detection

太赫兹(Terahertz,THz)光谱技术是基于飞秒技术的远红外波段光谱测量新方法。它与众不同的频率范围提供了一个新的手段,可以对那些在一般光学范围内难以或无法检测的气体自由基和活性分子进行有效的探测和分析。本文综合介绍了利用THz波谱对气体自由基分子精细谱图进行的研究,以及THz光谱在溶液反应动力学及电荷转移等自由基检测上的研究进展。

Terahertz spectroscopy is a new useful technique based on femto-second technology. With its unique frequency range, the technique has been applied to detection and analysis of gas free radicals and reactive molecules which are usually difficult to be measured by alternative methods. In this paper, we briefly introduce THz spectroscopy to detect free radicals and measure gas-phase molecules with high accuracy and its applications in studies on solution dynamics and charge transfer.