Surface-Enhanced Nonresonance Raman Scattering from Size- and Morphology-Controlled Gold Nanoparticle Films

Suzuki, Mototsugu; Niidome, Yasuro; Kuwahara, Yutaka; Terasaki, Nao; Inoue, Kei; Yamada, S.

doi:10.1021/jp0490150

Cited by 133 publications

(116 citation statements)

References 30 publications

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“…The fabrication of SERS-active substrates has accordingly been a challenge over the decades. [54][55][56] In reality, the enhancement properties of a SERS-active surface are highly susceptible to its method of preparation, and therefore its detailed nanostructure. Lots of SERS-active surfaces currently available are thus lacking in stability and/or reproducibility.…”

Section: Novel Fabrication Of Ag Thin Films For Efficient Sers 3·1 Famentioning

confidence: 99%

Surface-Enhanced Raman Scattering: A Powerful Tool for Chemical Identification

Kim

Shin

2011

ANAL. SCI.

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Section: Novel Fabrication Of Ag Thin Films For Efficient Sers 3·1 Famentioning

confidence: 99%

Surface-Enhanced Raman Scattering: A Powerful Tool for Chemical Identification

Kim

Shin

2011

ANAL. SCI.

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“…29 Alternatively, SERS materials have been made from nanoparticles deposited via electrolyte induced aggregation and sedimentation. 30 Deposits of nanoshells, 31 aggregated nanorods, 32 and other anisotropic nanoparticles 33 have high SERS activity as well. In most cases, however, such nanoparticle layers are disordered and lack long-range periodicity.…”

Section: Orlin Velevmentioning

confidence: 99%

Controlled assembly of SERS substrates templated by colloidal crystal films

2006

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Convective assembly at high volume fractions was used to assemble gold nanoparticles into structured porous films templated by colloidal crystals. These gold nanofilms have hierarchical porosity and were proven to be stable and efficient substrates for surface-enhanced Raman spectroscopy (SERS). The control over the film structure allowed optimization of their performance for potential sensor applications.Colloidal crystals are materials with periodic structure on the submicrometre length scale made by self-assembly of colloidal particles. Colloidal crystals can be used as a basis for fabrication of photonic materials, 1-7 optical coatings and filters, [8][9][10] lithographic etching masks, 11-13 and sensors. 14-17 The colloidal crystals can also serve as templates for a variety of other self-assembled materials with controlled and reproducible structure. In this review we highlight results based on our process for rapid and reproducible deposition of colloidal crystal films by convective assembly at high volume fractions. 18These crystal films serve as templates of controlled structure for surface-enhanced Raman spectroscopy substrates. 16,19The hallmark of SERS is selectivity, potential for remote sampling through fiber optics, and capability for detection of analytes in aqueous solvents. Despite these advantages the widespread use of SERS-based analytical technology has been slow. Before SERS-based sensors can find broad application in routine chemical analysis new SERS materials must be developed that yield consistently high signals and provide detection generality towards a wide range of chemical and environmental analytes. The major requirements for the SERS substrate materials include controlled nanoscale structure, periodicity and chemical stability. One of the well-studied methods for making SERS substrates uses mono-and bi-layers of close-packed microsphere

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“…Investigations have shown that nanogaps between two or more metal particles are associated with plasmonic "hot spots", and that SERS can greatly increase when the gap distance is reduced; 10,11 that is to say, the SERS signals can be controlled and modulated by electromagnetic field enhancement in interparticle plasmon coupling. Based on this mechanism, many biosensers have been established for the detection of various biomolecules, including peptides, [12][13][14] proteins, [15][16][17][18][19] DNA and RNA, [20][21][22] pathogen, [23][24][25] and living cells.…”

Section: Introductionmentioning

confidence: 99%

A Cytosine-rich DNA Decorated Gold Nanoparticles Surface Enhanced Raman-Scattering Platform for Sensitive and Selective Detection of Silver Ions

et al. 2013

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In this work, we developed a label-free, homogeneous surface-enhanced Raman-scattering (SERS) platform for the rapid, simple and sensitive detection of Ag + by using the unmodified gold nanoparticles (AuNPs). It utilizes the different absorption properties of single-strand DNA (ssDNA) and double-strand DNA (dsDNA) on citrate-coated AuNPs and specific interactions between Ag + and cytosine-cytosine pairs. In the presence of Ag + , the structure of ssDNA containing rich cytosine will form a duplex, resulting in the salt-induced aggregation of gold nanoparticles; the corresponding SERS signal transduction can be observed due to the plasmonic coupling of metallic nanoparticles. The assay possesses a superior signal-to-background ratio as high as ~35.8 with a detection limit of 15 nM. This approach is not only rapid and convenient in operation, but also shows excellent selectivity, which makes it possible to detect Ag + in actual samples.

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Surface-Enhanced Nonresonance Raman Scattering from Size- and Morphology-Controlled Gold Nanoparticle Films

Cited by 133 publications

References 30 publications

Surface-Enhanced Raman Scattering: A Powerful Tool for Chemical Identification

Surface-Enhanced Raman Scattering: A Powerful Tool for Chemical Identification

Controlled assembly of SERS substrates templated by colloidal crystal films

A Cytosine-rich DNA Decorated Gold Nanoparticles Surface Enhanced Raman-Scattering Platform for Sensitive and Selective Detection of Silver Ions

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