Single nanowire on graphene (SNOG) as an efficient, reproducible, and stable SERS-active platform

被引：24

作者：

Kim, Hongki ^{[1
]}

Seol, Myeong-Lok ^{[2
]}

Lee, Dong-Il ^{[2
]}

Lee, Jiyoung ^{[1
]}

Kang, Il-Suk ^{[3
]}

Lee, Hyoban ^{[1
]}

Kang, Taejoon ^{[4
,5
,6
]}

Choi, Yang-Kyu ^{[2
]}

Kim, Bongsoo ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem, Daejeon 34141, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Elect Engn, Daejeon 34141, South Korea

[3] Korea Adv Inst Sci & Technol, Natl Nanofab Ctr, Daejeon 34141, South Korea

[4] KRIBB, Hazards Monitoring Bionano Res Ctr, Daejeon 34141, South Korea

[5] KRIBB, BioNano Hlth Guard Res Ctr, Daejeon 34141, South Korea

[6] UST, Major Nanobiotechnol & Bioinformat, Daejeon 34141, South Korea

来源：

NANOSCALE | 2016年 / 8卷 / 16期

关键词：

ENHANCED RAMAN-SCATTERING; SILVER NANOPARTICLES; LAYER GRAPHENE; DNA DETECTION; SURFACE; SPECTROSCOPY; SENSOR; AU; IMMUNOASSAY; FABRICATION;

D O I：

10.1039/c6nr00092d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Developing a well-defined nanostructure that can provide strong, reproducible, and stable SERS signals is quite important for the practical application of surface-enhanced Raman scattering (SERS) sensors. We report here a novel single nanowire (NW) on graphene (SNOG) structure as an efficient, reproducible, and stable SERS-active platform. Au NWs having a well-defined single-crystal geometry on a monolayer graphene-coated metal film can form a well-defined, continuous nanogap structure that provides extremely reproducible and stable SERS signals. The in-NW reproducibility was verified by 2-dimensional Raman mapping, and the NW-to-NW reproducibility was verified by the cumulative curves of 32 SERS spectra. The simulation also indicated that a highly regular, line-shaped hot spot formed between the Au NW and graphene. Furthermore, SNOG platforms showed improved photostability and long-term oxidation immunity. We anticipate that SNOG platforms will be appropriate for practical biological and chemical sensor applications that demand reproducible, stable, and strong signal production.

引用

页码：8878 / 8886

页数：9

共 64 条

[1] ANOMALOUSLY INTENSE RAMAN-SPECTRA OF PYRIDINE AT A SILVER ELECTRODE [J].

ALBRECHT, MG ;

CREIGHTON, JA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1977, 99 (15) :5215-5217

[2] Superior thermal conductivity of single-layer graphene [J].

Balandin, Alexander A. ;

Ghosh, Suchismita ;

Bao, Wenzhong ;

Calizo, Irene ;

Teweldebrhan, Desalegne ;

Miao, Feng ;

Lau, Chun Ning .

NANO LETTERS, 2008, 8 (03) :902-907

[3] Impermeable atomic membranes from graphene sheets [J].

Bunch, J. Scott ;

Verbridge, Scott S. ;

Alden, Jonathan S. ;

van der Zande, Arend M. ;

Parpia, Jeevak M. ;

Craighead, Harold G. ;

McEuen, Paul L. .

NANO LETTERS, 2008, 8 (08) :2458-2462

[4] Recent progress in the preparation and application of semiconductor/graphene composite photocatalysts [J].

Chen Jianwei ;

Shi Jianwen ;

Wang Xu ;

Cui Haojie ;

Fu Minglai .

CHINESE JOURNAL OF CATALYSIS, 2013, 34 (04) :621-640

[5] Simultaneous immunoassay for the detection of two lung cancer markers using functionalized SERS nanoprobes [J].

Chon, Hyangah ;

Lee, Sangyeop ;

Yoon, Soo-Young ;

Chang, Soo-Ik ;

Lim, Dong Woo ;

Choo, Jaebum .

CHEMICAL COMMUNICATIONS, 2011, 47 (46) :12515-12517

[6] Highly Sensitive Immunoassay of Lung Cancer Marker Carcinoembryonic Antigen Using Surface-Enhanced Raman Scattering of Hallow Gold Nanospheres [J].

Chon, Hyangah ;

Lee, Sangyeop ;

Son, Sang Wook ;

Oh, Chil Hwan ;

Choo, Jaebum .

ANALYTICAL CHEMISTRY, 2009, 81 (08) :3029-3034

[7] Single molecule photobleaching: increasing photon yield and survival time through suppression of two-step photolysis [J].

Deschenes, LA ;

Bout, DAV .

CHEMICAL PHYSICS LETTERS, 2002, 365 (5-6) :387-395

[8] Influence of Photostability on Single-Molecule Surface Enhanced Raman Scattering Enhancement Factors [J].

Etchegoin, P. G. ;

Lacharmoise, P. D. ;

Le Ru, E. C. .

ANALYTICAL CHEMISTRY, 2009, 81 (02) :682-688

[9] Measurement of the distribution of site enhancements in surface-enhanced Raman scattering [J].

Fang, Ying ;

Seong, Nak-Hyun ;

Dlott, Dana D. .

SCIENCE, 2008, 321 (5887) :388-392

[10] Raman spectrum of graphene and graphene layers [J].

Ferrari, A. C. ;

Meyer, J. C. ;

Scardaci, V. ;

Casiraghi, C. ;

Lazzeri, M. ;

Mauri, F. ;

Piscanec, S. ;

Jiang, D. ;

Novoselov, K. S. ;

Roth, S. ;

Geim, A. K. .

PHYSICAL REVIEW LETTERS, 2006, 97 (18)

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