宽带和频光谱研究表界面动态过程
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- 英文论文题名：Investigation of Surface/Interface dynamic processes by Broadband Sum-Frequency Generation
- 论文作者：王朝晖 ; 何玉韩 ; 王静静 ; 郭伟 ; 王瑛 ; 岑琼燕 ; 张永燕
- 英文论文作者：Z.Wang ; Y.He ; J.Wang ; W.Guo ; Y.Wang ; Q.Cen ; Y.Zhang ; State Key Laboratory of Physical Chemistry of Solid Surfaces ; the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation ; and Department of Chemistry ; College of Chemistry and Chemical Engineering ; Xiamen University
- 年：2016
- 作者机构：固体表面物理化学国家重点实验室谱学分析与仪器教育部重点实验室厦门大学化学化工学院;
- 论文关键词：宽带和频光谱 ; 表界面结构表征 ; 电极表面氧化还原 ; 超快弛豫
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十五分会：纳米表征与测量
- 语种：中文
- 分类号：O657.3
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十五分会 ; 纳米表征与测量
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：274k
- 原文格式：D
- 会议级别：全国
摘要
宽带和频(BB-SFG)光谱是一种以二阶非线性技术,具有表面选择性和亚单层分子检测灵敏度。不仅可以提供表界面分子结构和取向信息,还能实时跟踪表界面上的动态结构变化。用BB-SFG光谱研究硫氰根离子在电极表面的氧化还原过程,不但观察到氧化产物的谱峰,还能得到随着吸附和氧化过程电极表面极化强度的变化情况。我们还用BB-SFG光谱实时跟踪了飞秒红外脉冲与金属表面相互作用后,表面上相干态的形成和超快弛豫过程。另外,简要介绍"基于可调谐红外激光的能源化学大型实验装置"项目的基本情况,以及红外自由电子激光在结构研究中的应用。
Broadband Sum-Frequency Generation(BB-SFG) spectroscopy is 2~(nd) order nonlinear technique. Due to its unique surface selectivity and high sensitivity, BB-SFG can provide surface/interface structure information about molecular orientation, ordering, and adsorption site. It is a powerful tool to follow dynamic process on surface with high time resolution. We observed electrode surface response to the adsorption/desorption and oxidation/reduction of thiocyanate ion on Au electrode. Ultrafast creation and relaxation of surface coherence generated by a femtosecond IR pulse had been probed by BB-SFG as well. The "Tunable Infrared Laser for Fundamentals of Energy Chemistry" project and the application of Free Electron Laser in structure characterization will be briefly introduced.
Broadband Sum-Frequency Generation(BB-SFG) spectroscopy is 2~(nd) order nonlinear technique. Due to its unique surface selectivity and high sensitivity, BB-SFG can provide surface/interface structure information about molecular orientation, ordering, and adsorption site. It is a powerful tool to follow dynamic process on surface with high time resolution. We observed electrode surface response to the adsorption/desorption and oxidation/reduction of thiocyanate ion on Au electrode. Ultrafast creation and relaxation of surface coherence generated by a femtosecond IR pulse had been probed by BB-SFG as well. The "Tunable Infrared Laser for Fundamentals of Energy Chemistry" project and the application of Free Electron Laser in structure characterization will be briefly introduced.
引文
[1]He,Y.;Wang,Y.;Wang,J.;Guo,W.;Wang,Z.Opt.Lett.2016,41(5):874-877
[2]Wang,J.;Xu,M.;Huangfu,Z.;et al,Vib.Spectrosc.2016:10.1016/j.vibspec.2016.04.001
[2]Wang,J.;Xu,M.;Huangfu,Z.;et al,Vib.Spectrosc.2016:10.1016/j.vibspec.2016.04.001