Gold Mesostructures with Tailored Surface Topography and Their Self-Assembly Arrays for Surface-Enhanced Raman Spectroscopy

被引：308

作者：

Fang, Jixiang ^{[1
,3
]}

Du, Shuya ^{[2
]}

Lebedkin, Sergei ^{[3
]}

Li, Zhiyuan ^{[2
]}

Kruk, Robert ^{[3
]}

Kappes, Manfred ^{[3
]}

Hahn, Horst ^{[3
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Sci, MOE Key Lab Nonequilibrium Synth & Modulat Conden, Shann Xi 710049, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[3] KIT, Inst Nanotechnol, D-76021 Karlsruhe, Germany

来源：

NANO LETTERS | 2010年 / 10卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Gold mesostructures; sea urchin-like; surface topography; self-assembly; SERS; HIGH-YIELD SYNTHESIS; SILVER NANOPARTICLES; ORIENTED ATTACHMENT; NANOSCALE ROUGHNESS; CATALYZED GROWTH; SCATTERING; CRYSTALLIZATION; NANOSTRUCTURES; NANOCRYSTALS; NUCLEATION;

D O I：

10.1021/nl103161q

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report a facile particle mediated aggregation protocol to synthesize "sea urchin"-like gold mesoparticles with tailored surface topography via a secondary nucleation and growth process. Surprisingly, these multitip Au mesoparticles are capable of self-assembling into monolayer or multiple layer arrays on Si substrates with a convincing reproducibility and homogeneity over large areas. Raman measurements show that these individual sea urchin-like multitipped gold mesoparticles exhibit a high enhancement of surface-enhanced Raman scattering (SERS). In addition, the sea urchin-like mesoparticle arrays display a further enhancement of SERS by 1 or 2 orders of magnitude over the individual mesoparticle due to the formation of additional hot spots between the particles. The current protocol stands out as a potentially interesting approach for the fabrication of technologically important SERS-based sensors.

引用

页码：5006 / 5013

页数：8

共 48 条

[41]

2-1

[42] Seedless, surfactantless, high-yield synthesis of branched gold nanocrystals in HEPES buffer solution [J].

Xie, Jianping ;

Lee, Jim Yang ;

Wang, Daniel I. C. .

CHEMISTRY OF MATERIALS, 2007, 19 (11) :2823-2830

[43] Spectroscopy of single hemoglobin molecules by surface enhanced Raman scattering [J].

Xu, HX ;

Bjerneld, EJ ;

Käll, M ;

Börjesson, L .

PHYSICAL REVIEW LETTERS, 1999, 83 (21) :4357-4360

[44] Electromagnetic contributions to single-molecule sensitivity in surface-enhanced Raman scattering [J].

Xu, HX ;

Aizpurua, J ;

Käll, M ;

Apell, P .

PHYSICAL REVIEW E, 2000, 62 (03) :4318-4324

[45] Nanoscale roughness on metal surfaces can increase tip-enhanced Raman scattering by an order of magnitude [J].

Zhang, Weihua ;

Cui, Xudong ;

Yeo, Boon-Siang ;

Schmid, Thomas ;

Hafner, Christian ;

Zenobi, Renato .

NANO LETTERS, 2007, 7 (05) :1401-1405

[46] Electrochemical tuning of silver nanoparticles fabricated by nanosphere lithography [J].

Zhang, XY ;

Hicks, EM ;

Zhao, J ;

Schatz, GC ;

Van Duyne, RP .

NANO LETTERS, 2005, 5 (07) :1503-1507

[47] Raman scattering enhancement contributed from individual gold nanoparticles and interparticle coupling [J].

Zhu, ZH ;

Zhu, T ;

Liu, ZF .

NANOTECHNOLOGY, 2004, 15 (03) :357-364

[48]

TECHNICAL INFORM KLA

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