Revealing the difference of Stark tuning rate between interface and bulk by surface-enhanced infrared absorption spectroscopy  

作　　者：Manyu Zhu Fei Liang Lie Wu Zihao Li Chen Wang Shule Liu Xiue Jiang 

机构地区：[1]State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China [2]School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China [3]School of Materials Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China [4]Research Center for Analytical Science,College of Chemistry,Nankai University,Tianjin 300071,China

出　　处：《Chinese Chemical Letters》2025年第2期433-436,共4页中国化学快报(英文版)

基　　金：The National Key R&D Program of China(No.2022YFE0113000);the National Science Fund for Distinguished Young Scholars(No.22025406);the National Natural Science Foundation of China(Nos.22074138,12174457);the Youth Innovation Promotion Association of CAS(No.2020233)for financial support。

摘　　要：Revealing the factors that affect the vibrational frequency of Stark probe at interface is a pre-requirement for evaluating the absolute interfacial electric field.Here using surface-enhanced infrared absorption(SEIRA)spectroscopy,attenuated total reflection(ATR)spectroscopy and molecular dynamics(MD),we reveal the assembled C≡N at gold nanofilm exhibits a reduced Stark tuning rate(STR)referring to the vibrational frequency shift in response to electric field comparing with the bulk which was regulated by the electron transfer between S and Au.These findings lead to a deeper understanding of the vibrational Stark effect at the interface and provide guidance for improving the interface electric field theory.

关 键 词：Surface-enhanced infrared spectroscopy Attenuated total reflection spectroscopy Vibrational stark effect Stark tuning rate Cyano group 

分 类 号：O647[理学—物理化学] O657.33[理学—化学]