Ma Hairong, Wan Chaozhi, Zewail Ahmed H
Physical Biology Center for Ultrafast Science and Technology, and Laboratory for Molecular Sciences, California Institute of Technology, Pasadena, California 91125, USA.
J Am Chem Soc. 2006 May 17;128(19):6338-40. doi: 10.1021/ja0613862.
We report the development of ultrafast T-jump with time resolution reaching the fundamental time scale of water thermalization time ( approximately 5 ps). The T-jump heats the bulk water up to 20 degrees C via the overtone absorption of the OH- stretch at 1.5 mum. The example given here shows the application of the methodology, for the first time, and the results demonstrate distinct time scales for solvation, conformational change, and thermal reaction.
我们报告了超快温度跃升技术的进展，其时间分辨率达到了水热化时间的基本时间尺度（约5皮秒）。该温度跃升通过1.5微米处OH键伸缩振动的倍频吸收将大量水加热到20摄氏度。此处给出的例子首次展示了该方法的应用，结果表明溶剂化、构象变化和热反应具有不同的时间尺度。
