Gold nanoparticle decorated electrospun nanofibers: A 3D reproducible and sensitive SERS substrate

Liu, Zhicheng; Zhang, Yan; Jia, Lishan; Song, Ping; Mei, Linyu; Bai, Lu; Liu, Yaqing

doi:10.1016/j.apsusc.2017.01.157

Cited by 45 publications

(17 citation statements)

References 40 publications

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“…Due to steric hindrance and the deposition process, the surface coverage obtainable by this technique is limited and in very few cases can reach 50% of the substrate area reducing a priori the achievable hotspots surface density, although the use of sacrificial organic shells can lead to the preparation of homogeneous hotspot distributions [18]. This method is not restricted to flat substrates, and the use of rough or fibrous substrates offers additional capabilities [19,20]. Without having to resort to changes in the particle properties, additional control parameters can be made available by organizing the nanoparticles at the liquid/air interface prior to their transfer to a solid support using the LB technique [21].…”

Section: Introductionmentioning

confidence: 99%

Tailoring plasmonic response by Langmuir–Blodgett gold nanoparticle templating for the fabrication of SERS substrates

Tahghighi

Mannelli

Janner

et al. 2018

Applied Surface Science

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Nanoparticle self-assembly is a robust and versatile strategy for the development of functional nanostructured materials, offering low-cost and scalable methods that can be fine-tuned for many different specific application. In this work, we demonstrate a pathway for the fabrication of tailorable quasi-two-dimensional lattices of gold nanoparticles to be used in Surface Enhanced Raman Scattering (SERS) detection of biomolecules. As a first step, nanoparticles are spread as a monolayer at the water/air interface, compressed to a target lateral density in a Langmuir-Blodgett technique, and transferred to a properly functionalized substrate surface. Once firmly adhered to the substrate, the lattice of nanoparticles can be directly used or be further processed using electroless gold deposition to let the nanoparticle grow thus tuning the plasmonic response and SERS enhancement. Compared to direct deposition or self-assembly methods, our protocol enables to obtain consistent results and much higher coverage of Au nanoparticles thanks to the active control of the surface pressure of the spread monolayer.

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Section: Introductionmentioning

confidence: 99%

Tailoring plasmonic response by Langmuir–Blodgett gold nanoparticle templating for the fabrication of SERS substrates

Tahghighi

Mannelli

Janner

et al. 2018

Applied Surface Science

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“…Different polymers or ceramic nanofibers, such as PVA [ 100 , 116 , 117 ], cellulose [ 118 ], poly(methyl methacrylate) (PMMA) [ 119 ], chitosan [ 106 ], poly (acrylic acid) (PAA)/PVA [ 120 ], and silica [ 121 ] have been utilized to combine with different Ag or Au nanostructures to fabricate the flexible substrate for SERS. PVA is a nontoxic, biocompatible polymer, which has good electrospinability, and it is a popular material for electrospinning.…”

Section: Sensing Applications Of Electrospun Polymer Nanofibers Decormentioning

confidence: 99%

Electrospun Polymer Nanofibers Decorated with Noble Metal Nanoparticles for Chemical Sensing

et al. 2017

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The integration of different noble metal nanostructures, which exhibit desirable plasmonic and/or electrocatalytic properties, with electrospun polymer nanofibers, which display unique mechanical and thermodynamic properties, yields novel hybrid nanoscale systems of synergistic properties and functions. This review summarizes recent advances on how to incorporate noble metal nanoparticles into electrospun polymer nanofibers and illustrates how such integration paves the way towards chemical sensing applications with improved sensitivity, stability, flexibility, compatibility, and selectivity. It is expected that further development of this field will eventually make a wide impact on many areas of research.

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“…However, despite this huge potential of SERS in (bio)analytics, the technique is not accepted in routine analytics, which is often associated with the lack of reproducibility of the applied SERS substrates. To address this obstacle, a number of fabrication strategies are available claiming the preparation of ‘reproducible SERS substrate’ [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Additionally, SERS is combined with microfluidic approaches in order to allow for comparable and reproducible measuring conditions in quantitative detection schemes [ 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

TopUp SERS Substrates with Integrated Internal Standard

et al. 2018

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Surface-enhanced Raman spectroscopy (SERS) is known as a molecular-specific and highly sensitive method. In order to enable the routine application of SERS, powerful SERS substrates are of great importance. Within this manuscript, a TopUp SERS substrate is introduced which is fabricated by a top-down process based on microstructuring as well as a bottom-up generation of silver nanostructures. The Raman signal of the support material acts as an internal standard in order to improve the quantification capabilities. The analyte molecule coverage of sulfamethoxazole on the surface of the nanostructures is characterized by the SERS signal evolution fitted by a Langmuir–Freundlich isotherm.

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Gold nanoparticle decorated electrospun nanofibers: A 3D reproducible and sensitive SERS substrate

Cited by 45 publications

References 40 publications

Tailoring plasmonic response by Langmuir–Blodgett gold nanoparticle templating for the fabrication of SERS substrates

Tailoring plasmonic response by Langmuir–Blodgett gold nanoparticle templating for the fabrication of SERS substrates

Electrospun Polymer Nanofibers Decorated with Noble Metal Nanoparticles for Chemical Sensing

TopUp SERS Substrates with Integrated Internal Standard

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