Plasmon-Mediated Surface Engineering of Silver Nanowires for Surface-Enhanced Raman Scattering

被引：38

作者：

Lu, Gang ^{[1
,2
,3
]}

Yuan, Haifeng ^{[3
]}

Su, Liang ^{[3
]}

Kenens, Bart ^{[3
]}

Fujita, Yasuhiko ^{[3
]}

Chamtouri, Maha ^{[3
]}

Pszona, Maria ^{[4
]}

Fron, Eduard ^{[3
]}

Waluk, Jacek ^{[4
]}

Hofkens, Johan ^{[3
,5
]}

Uji-i, Hiroshi ^{[3
,5
]}

机构：

[1] Nanjing Tech Univ, Inst Adv Mat, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[2] Jiangsu Natl Synergist Innovat Ctr Adv Mat SICAM, Key Lab Flexible Elect KLOFE, 30 South Puzhu Rd, Nanjing 211816, Jiangsu, Peoples R China

[3] Katholieke Univ Leuven, Dept Chem, Celestijnenlaan 200F, B-3001 Heverlee, Belgium

[4] Polish Acad Sci, Inst Phys Chem, Kasprzaka 44, PL-01224 Warsaw, Poland

[5] Hokkaido Univ, Res Inst Elect Sci, N20W10, Sapporo, Hokkaido 0010020, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2017年 / 8卷 / 13期

基金：

欧洲研究理事会; 比利时弗兰德研究基金会;

关键词：

P-AMINOTHIOPHENOL; SERS SPECTRA; SINGLE NANOPARTICLES; GRAPHENE OXIDE; POLYOL PROCESS; MOLECULES; SPECTROSCOPY; GOLD; NANOSTRUCTURES; DIAGNOSTICS;

D O I：

10.1021/acs.jpclett.7b00958

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We reveal nanoscale morphological changes on the surface of a silver nanowire (AgNW) in the conventional surface-enhanced Raman scattering (SERS) measurement condition. The surface morphology changes are due to the surface plasmon-mediated photochemical etching of silver in the presence of certain Raman probes, resulting in a dramatic increase of Raman scattering intensity. This observation indicates that the measured SERS enhancement does not always originate from the as-designed/fabricated structures themselves, but sometimes with contribution from the morphological changes by plasmon-mediated photochemical reactions. Our work provides a guideline for more reliable SERS measurements and demonstrates a novel method for simple and site specific engineering of SERS substrate and AgNW probes for designing and fabricating new SERS systems, stable and efficient TEAS mapping, and single-cell SERS endoscopy.

引用

页码：2774 / 2779

页数：6

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