Enhanced optical second harmonic generation in hybrid polymer nanoassemblies based on coupled surface plasmon resonance of a gold nanoparticle array

Ishifuji, Miki; Mitsuishi, Masaya; Miyashita, Tokujı

doi:10.1063/1.2219086

Cited by 23 publications

(28 citation statements)

References 12 publications

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“…The plasmon of the nanoparticles is resonant at the second harmonic (SH) frequency and enhances the emission. As far as we know, there are few works on the enhancement of SHG (either in semiconductor QDs or in molecules) produced by the resonant excitation of metal nanoparticles[10][11][12][13].…”

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confidence: 99%

Plasmon-enhanced second harmonic generation in semiconductor quantum dots close to metal nanoparticles

2011

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We report the enhancement of the optical second harmonic signal in non-centrosymmetric semiconductor CdS quantum dots, when they are placed in close contact with isolated silver nanoparticles. The intensity enhancement is about 1000. We also show that the enhancement increases when the incoming laser frequency $omega$ is tuned toward the spectral position of the silver plasmon at $2omega$, proving that the silver nanoparticle modifies the nonlinear emission.

Received: 8 March 2011, Accepted: 30 May 2011; Edited by: L. Viña; Reviewed by: R. Gordon, Department of Electrical and Computer Engineering, University of Victoria, British Columbia, Canada; DOI: 10.4279/PIP.030002

Cite as: P. M. Jais, C. von Bilderling, A. V. Bragas, Papers in Physics 3, 030002 (2011)

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Plasmon-enhanced second harmonic generation in semiconductor quantum dots close to metal nanoparticles

2011

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Cite as: P. M. Jais, C. von Bilderling, A. V. Bragas, Papers in Physics 3, 030002 (2011)

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“…We demonstrated a nanoscale combination of NLO active polymer nanosheet and a gold nanoparticle array and achieved SHG enhancement from hybrid polymer nanoassemblies to further improve NLO properties of LB films. 52 Noble metal nanoparticles have large ð3Þ susceptibility values; 53 therefore, nonlinear optical characteristics of nanoparticles have been investigated intensively, in particular, for third harmonic generation. As for the SHG efficiency of the nanoparticle, however, the ð2Þ values of noble metal nanoparticles are very small, which imparts modest NLO effects:…”

Section: Second Harmonic Generation From Hybrid Polymer Nanoassembliesmentioning

confidence: 99%

Hybrid Polymer Nanoassemblies: Polymer Nanosheets Organized with Metal Nanoparticle Arrays for Surface Plasmon Photonics

Mitsuishi

Ishifuji

Endô

et al. 2007

Polym J

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ABSTRACT:The paper describes fabrication of hybrid polymer nanoassemblies possessing polymer nanosheets and metal nanoparticle arrays. Based on a bottom-up approach with ultrathin polymer Langmuir-Blodgett films (polymer nanosheets) and metal nanoparticles, we constructed hybrid nanoassemblies for opto/electric nanodevice applications: nanoscale positioning of metal nanoparticles, free-standing hybrid polymer nanosheets, hybrid polymer nanoassemblies for luminescence sensor application, and enhancement of nonlinear optical (NLO) efficiency via surface plasmon coupling. Assembling nanomaterials such as nanoparticles and organic functional molecules through a bottom-up approach makes it possible to strengthen free-standing nanofilm stability, enhance luminescence of luminescent molecules, and enhance second harmonic light from NLO molecules under the influence of localized surface plasmons. The high potential of hybrid polymer nanoassemblies for precise nanoscale design is also demonstrated.[doi:10.1295/polymj.PJ2006235] KEY WORDS Polymer / LB Film / Metal Nanoparticle / Surface Plasmon / Hybrid / Design of nanostructures using polymer materials has been widely explored and has now become prevalent. Bottom-up approaches such as layer-by-layer (LbL) adsorption, 1 surface-initiated polymerization exemplified by atom transfer radical polymerization (ATRP), 2 and Langmuir-Blodgett (LB) technique [3][4][5][6][7] make it possible to develop myriad nanoarchitectures on solid substrates. These approaches and their combinations offer a promising route to polymer nanoarchitectures for a wide variety of functional materials and surfaces. Using these nanostructures, for instance, the surface properties can be controlled uniformly, even on a nanoscale. These compelling qualities of ultrathin polymer films have been expanded to broad scientific fields. It is important to intensify the interdisciplinary interactions, for example, between polymer materials and inorganic nanoparticles in basic and application-oriented work.We have investigated functionalization of polymer LB films consisting of poly(alkylacrylamide)s. Poly-(N-dodecylacrylamide) (pDDA) proved to be excellent for LB assembly; the material provides a highly oriented and densely packed monolayer at the airwater interface. 8,9 Varying the side chain length, the film thickness is tuned at a nanometer scale (1-2 nm in length). Widely various functional molecules were incorporated and distributed uniformly in a two-dimensional (2D) field. The key factor is the existence of a 2D hydrogen-bonding network between polymer backbones, which enhances the monolayer stability at the air-water interface, leading to quantitative deposition onto solid substrates via vertical dipping. We recently designated polymer LB films consisting of alkyl acrylamide polymer as polymer nanosheets. Using these advantages, directional (vectorial) electron transfer between several redox components was achieved in multilayered polymer nanosheets, 10,11 extending to logic gate operations.12, 13 We have...

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“…The monolayer is easily transferable on solid supports as Y-type LB films over 700 layers. [2] A diverse range of molecules have been successfully incorporated in ultrathin polymer films at the monolayer level: e.g., organometallic complexes, [3] aromatic hydrocarbons, [4][5][6] redox active groups, [7,8] thermosensitive groups, [9] nonlinear optical active groups, [10][11][12] ferroelectric polymers, [13] and polyhedral oligomeric silsesquioxane. [14,15] The ultrathin polymer films act as a nanoruler manipulating nanomaterials systematically with nanoscale precision.…”

Section: Introductionmentioning

confidence: 99%

Luminescence Properties of Platinum Porphyrin Embedded in Multilayered Polymer Nanosheets

Mitsuishi

Chen

Gao

et al. 2014

Int.J.Soc.Mater.Eng.Resour.

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The paper presents luminescence properties of platinum porphyrins embedded in ultrathin polymer Langmuir-Blodgett (LB) films (nanosheets). We prepared amphiphilic copolymer of platinum porphyrin with N-dodecylacrylamide (p(DDA/PtTPP)). The copolymer p(DDA/PtTPP) with 6mol% PtTPP content took a stable monolayer formation at the air-water interface. Luminescent p(DDA/PtTPP) nanosheets were successfully assembled on solid substrates by the vertical dipping method. The luminescence intensity as a function of the number of layers revealed that platinum-porphyrin is effectively quenched by molecular oxygen for multilayered p(DDA/PtTPP) nanosheets with more than ten layers. Atomic force microscopy revealed that the p(DDA/PtTPP) nanosheets had relatively rough surfaces, leading to high surface-tovolume ratio. The oxygen sensitive polymer nanosheet multilayers enables us to monitor dissolved oxygen concentration in water.

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Enhanced optical second harmonic generation in hybrid polymer nanoassemblies based on coupled surface plasmon resonance of a gold nanoparticle array

Cited by 23 publications

References 12 publications

Plasmon-enhanced second harmonic generation in semiconductor quantum dots close to metal nanoparticles

Plasmon-enhanced second harmonic generation in semiconductor quantum dots close to metal nanoparticles

Hybrid Polymer Nanoassemblies: Polymer Nanosheets Organized with Metal Nanoparticle Arrays for Surface Plasmon Photonics

Luminescence Properties of Platinum Porphyrin Embedded in Multilayered Polymer Nanosheets

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