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Abnormally Weak Surface-Enhanced Raman Scattering Activity of Tip-Rich Au Nanostars: The Role of Interfacial Defects

文献类型：期刊论文

作者Guo, Yujing; Zhu, Shuyi; Bao, Haoming; Fu, Hao; Zhang, Hongwen; Zhou, Le; Li, Yue; Cai, Weiping
刊名JOURNAL OF PHYSICAL CHEMISTRY LETTERS
出版日期2022-03-17
卷号13
ISSN号1948-7185
DOI10.1021/acs.jpclett.1c04088
通讯作者Bao, Haoming(baohm@issp.ac.cn) ; Zhang, Hongwen(hwzhang@issp.ac.cn) ; Cai, Weiping(wpcai@issp.ac.cn)
英文摘要Designing and regulating the geometry of a given plasmonic metal (Au, Ag, etc.) has become one of the most efficient approaches to achieve highly active surface-enhanced Raman spectroscopy (SERS) substrates, but this work demonstrates that plain efforts on this may not be enough. Here, we report that the often-neglected inner crystal defects also have huge impacts on the SERS activity, through a case of Au nanostars (NSs) with good SERS geometry but rich in defects. The results suggest that the interfacial defects (twin boundaries and superlattices) in the NSs aggravate the electronic oscillation damping via reducing the free path of electron scattering. This eventually results in weak local electromagnetic fields near the NS surfaces (or weak SERS activity of the NSs). This study has demonstrated the huge impact of interfacial defects on SERS activity and thus has a significant guideline for the design and fabrication of efficient SERS substrates.
WOS关键词OPTICAL-PROPERTIES ; NANOPARTICLES ; SERS ; SPECTROSCOPY
资助项目National Natural Science Foundation of China[11974352] ; National Natural Science Foundation of China[51771182] ; National Natural Science Foundation of China[52001305] ; China Postdoctoral Science Foundation[2019M662211] ; China Postdoctoral Science Foundation[2021T140675] ; Special Research Assistant Project of the Chinese Academy of Sciences
WOS研究方向Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者AMER CHEMICAL SOC
WOS记录号WOS:000776518000019
资助机构National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Special Research Assistant Project of the Chinese Academy of Sciences
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/128639]  
专题中国科学院合肥物质科学研究院
通讯作者Bao, Haoming; Zhang, Hongwen; Cai, Weiping
作者单位Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Mat Phys,Anhui Key Lab Nanomat & Nanotech, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Yujing,Zhu, Shuyi,Bao, Haoming,et al. Abnormally Weak Surface-Enhanced Raman Scattering Activity of Tip-Rich Au Nanostars: The Role of Interfacial Defects[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2022,13.
APA Guo, Yujing.,Zhu, Shuyi.,Bao, Haoming.,Fu, Hao.,Zhang, Hongwen.,...&Cai, Weiping.(2022).Abnormally Weak Surface-Enhanced Raman Scattering Activity of Tip-Rich Au Nanostars: The Role of Interfacial Defects.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,13.
MLA Guo, Yujing,et al."Abnormally Weak Surface-Enhanced Raman Scattering Activity of Tip-Rich Au Nanostars: The Role of Interfacial Defects".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 13(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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