Surface-Enhanced Infrared Absorption Spectroscopy for Analyzing Nucleophilic Molecules Using Ethylene Glycol Decorated TiO2 Nanosheet
文献类型：期刊论文
| 作者 | Zhong, Wen ; Ye, Li; Du, Jingjing; Jing, Chuanyong
|
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2022 |
| 页码 | 1-7 |
| 关键词 | SEIRA TiO2 nanosheet surface ligand chemical mechanisms nucleophilicity |
| ISSN号 | 1944-8244 |
| 英文摘要 | Surface-enhanced infrared absorption (SEIRA) spectroscopy has been developed for the nondestructive analysis of trace molecules. Herein, we found that ethylene glycol (EG) decorated TiO2 nanosheet exhibits a selective SEIRA effect for molecules with nucleophilic groups, such as -NH2 and -OH. The SEIRA effect was attributed to the chemical mechanism originating from the interactions between the surface EG and the analytes. The enhancement factor was negatively correlated with the electrophilicity index of the analytes (p = 0.004), and the noncovalent bond dominates the interactions between the analytes and EG. The charge distribution analysis revealed that the -CH2 groups of EG exposed on the TiO2 surface are positively charged, attracting the electron-rich groups of the analyte. This attraction concentrates the analyte, redistributes its charge, defines its molecular dipole moment, and thereby enhances the SEIRA effect. The insights gained from this study shed light on developing new SEIRA substrates and emphasized the critical role of surface ligands in SEIRA applications. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/48516]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.University of Chinese Academy of Sciences, CAS 2.Chinese Academy of Sciences 3.Research Center for Eco-Environmental Sciences (RCEES) 4.Shandong University |
| 推荐引用方式 GB/T 7714 | Zhong, Wen,Ye, Li,Du, Jingjing,et al. Surface-Enhanced Infrared Absorption Spectroscopy for Analyzing Nucleophilic Molecules Using Ethylene Glycol Decorated TiO2 Nanosheet[J]. ACS APPLIED MATERIALS & INTERFACES,2022:1-7. |
| APA | Zhong, Wen,Ye, Li,Du, Jingjing,&Jing, Chuanyong.(2022).Surface-Enhanced Infrared Absorption Spectroscopy for Analyzing Nucleophilic Molecules Using Ethylene Glycol Decorated TiO2 Nanosheet.ACS APPLIED MATERIALS & INTERFACES,1-7. |
| MLA | Zhong, Wen,et al."Surface-Enhanced Infrared Absorption Spectroscopy for Analyzing Nucleophilic Molecules Using Ethylene Glycol Decorated TiO2 Nanosheet".ACS APPLIED MATERIALS & INTERFACES (2022):1-7. |
入库方式： OAI收割
来源：生态环境研究中心
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