Investigation of the Effects of the Local Environment on the Surface-Enhanced Raman Spectra of Striped Gold/Silver Nanorod Arrays

Broglin, Brandy L.; Andreu, Aja; Dhussa, Neetu; Heath, Jerry A.; Gerst, Jeff; Dudley, Bruce W.; Holland, D. O.; El‐Kouedi, Mahnaz

doi:10.1021/la062145a

Cited by 32 publications

(26 citation statements)

References 32 publications

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“…Long Au nanorods have been shown to be hydrophobic. 31 Even though our nanorods are relatively short, with much of the alumina still present it can be difficult to properly wet the Au nanorods with the probe solution. Since the calculated E-field is almost unchanged after 5 min.…”

Section: Fem Calculationsmentioning

confidence: 99%

Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering

et al. 2014

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In this paper we probe surface enhanced Raman scattering (SERS) and Surface enhanced Fluorescence (SEF) from probe molecule Rhodamine 6G (Rhod6G) on self-standing Au nanorod array substrates made using a combination of anodization and potentiostatic electrodeposition. The finished substrates were embedded within a porous alumina template. By varying the etching time i.e. the thickness of the alumina, we show that there exists an inverse relationship between SERS and SEF. SERS and SEF also show a nonlinear response to increasing etching time due to an inhomogeneous plasmon activity across the nanorod. By modeling the electromagnetic fields created at different etching times we confirm the nonuniform plasmon activity along the Au nanorods and explain the nonlinear behaviors of SERS and SEF. Optimization of the level of alumina matrix thickness optimizes conditions for obtaining either maximized SERS, SEF or for simultaneously observing both SERS and SEF together.

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Section: Fem Calculationsmentioning

confidence: 99%

Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering

et al. 2014

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“…[7] Most work on silver nanorods has been carried out with chemically grown samples produced by 'soft template' methods [8][9][10][11] that have shown excellent plasmon resonances. Other popular techniques used for forming silver nanorods and nanowires are electroplating into polycarbonate [12,13] or alumina [14][15][16][17][18][19][20][21] templates. The latter techniques have the advantage that nanorods or nanowires with larger aspect ratios and vertical alignment can be grown.…”

Section: Introductionmentioning

confidence: 99%

Optical Transmission Properties and Electric Field Distribution of Interacting 2D Silver Nanorod Arrays

Evans

Kullock

Hendren

et al. 2008

Adv Funct Materials

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Silver nanorods have been grown by electrodeposition into thin film porous alumina templates (AAO). Optical transmission measurements using p‐polarized incident white light shows clear plasmon resonance extinction peaks. We successfully model the dependence on angle in incidence of extinction peak height and position using a multiple–multipoles (MMP) approach with the different spectral features being clearly associated with the effective electric field distribution and coupling between individual nanorods.

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“…19 Accordingly, to date, many efforts have been made to study on the incorporation of metallic nanostructures into polymer matrix. [20][21][22][23][24][25][26][27][28][29] However, a strategy for an enhancement in optical absorption based on a precisely controlled fabrication method involving Ag nanostructures and highly ordered porous template remains unreported till now.…”

mentioning

confidence: 99%

Fabrication of Ag Nanorods-Embedded P3HT/PCBM Films for the Enhancement of Light Absorption

Park

Bae

Sohn

et al. 2015

ECS Solid State Letters

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We report a facile method for preparing hybrid nanostructured films composed of poly(3-hexlythiophene) (P3HT) and [6,6]-phenyl-C 61 -butyric acid methyl ester (PCBM) with silver (Ag) nanorods (AgNRs) array. The AgNRs were synthesized by an electrochemical deposition method using an anodic aluminum oxide template with 50-nm-pore-diameter and 10-μm-thickness. The nanostructured P3HT/PCBM film was formed by the intercalation of AgNRs into the P3HT/PCBM film. The nanostructured P3HT/PCBM film with AgNRs showed enhanced optical absorption in the spectral range of 300-650 nm due to localized surface plasmon resonance and scattering effects around the AgNRs compared with spin-coated and nanopatterned P3HT/PCBM films without AgNRs. The design and manipulation of conjugated polymers have been extensively studied in basic science and for a wide range of applications. 1Conjugated polymers have many advantages, such as low production cost, high flexibility, and controllable conductivity, over inorganic materials.2 In addition, the chemical and physical properties of conjugated polymers can be improved by controlling their molecular weight and structure. 3,4 Due to these advantages and the applicability of conjugated polymers, many efforts have been dedicated to the design of chemical structures with specific functionalities, 5 efficient methodologies for synthesis processes, 6 and a suitable structure for optoelectronic applications. 4,7,8 Importantly, one key method for improving the efficiency of photovoltaic devices is to enhance the optical absorption in the organic active layers of these devices. Recent extensive studies on optoelectronic devices have shown that hybrid, nanostructured materials can give rise to remarkably improved energy conversion efficiency via various light-trapping mechanisms and optical absorption enhancement schemes. Moreover, the efficiency of optoelectronic devices largely depends on the structural design of these devices because the incorporation of nanostructures into polymer films offer advantages, such as adjustable material thickness, 1 controllable interfaces, 8 and large surface area, 9 compared to the bulk structure in polymer films. Therefore, many types of nanostructures, including nanoparticles, nanowires, nanotubes, and tetrapods, have been fabricated, and their effectiveness in improving photovoltaic performance has been examined using hybrid material systems. [10][11][12] In particular, the use of a porous template to prepare nanostructures is a promising method that has the advantages of highly regular pore arrays and the ability to control aspects of template geometry, such as pore diameter, pore depth, and inter-pore distance.13 Thus, the design and modification of the surface morphology of polymers using a highly ordered porous template can play an important role in improving efficiency and reducing the production cost of optoelectronic devices, such as organic light-emitting diodes (OLEDs) and organic solar cells. 14,15 Recently, metallic nanostructures have been explored to ...

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Investigation of the Effects of the Local Environment on the Surface-Enhanced Raman Spectra of Striped Gold/Silver Nanorod Arrays

Cited by 32 publications

References 32 publications

Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering

Application of AAO Matrix in Aligned Gold Nanorod Array Substrates for Surface-Enhanced Fluorescence and Raman Scattering

Optical Transmission Properties and Electric Field Distribution of Interacting 2D Silver Nanorod Arrays

Fabrication of Ag Nanorods-Embedded P3HT/PCBM Films for the Enhancement of Light Absorption

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