Comparison of Photoluminescence Quantum Yield of Single Gold Nanobipyramids and Gold Nanorods

Rao, Wenye; Li, Qiang; Wang, Yuanzhao; Li, Tao; Wu, Lijun

doi:10.1021/nn506689b

Cited by 102 publications

(103 citation statements)

References 43 publications

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“…4−6 This plasmon-assisted process is by orders of magnitude more favorable than the direct radiative recombination of a d-band hole with an sp-electron, and hence the luminescence yield is increased by orders of magnitude in the case of gold nanoparticles. 3,5,7−16 Therefore, and because luminescence from gold nanostructures does not suffer from irreversible photobleaching, 17 gold nanoparticles bear huge potential as dyes in bioimaging 18,19 or for optical data storage. 20 Reports on PL from individual nanoparticles with various shapes comprise nanorods, 8 nanocubes, 19 nanobipyramids (BPs), 16,21,22 and nanostars.…”

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confidence: 99%

Anticorrelation of Photoluminescence from Gold Nanoparticle Dimers with Hot-Spot Intensity

et al. 2016

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Bulk gold shows photoluminescence (PL) with a negligible quantum yield of ∼10–10, which can be increased by orders of magnitude in the case of gold nanoparticles. This bears huge potential to use noble metal nanoparticles as fluorescent and unbleachable stains in bioimaging or for optical data storage. Commonly, the enhancement of the PL yield is attributed to nanoparticle plasmons, specifically to the enhancements of scattering or absorption cross sections. Tuning the shape or geometry of gold nanostructures (e.g., via reducing the distance between two nanoparticles) allows for redshifting both the scattering and the PL spectra. However, while the scattering cross section increases with a plasmonic redshift, the PL yield decreases, indicating that the common simple picture of a plasmonically boosted gold luminescence needs more detailed consideration. In particular, precise experiments as well as numerical simulations are required. Hence, we systematically varied the distance between the tips of two gold bipyramids on the nanometer scale using AFM manipulation and recorded the PL and the scattering spectra for each separation. We find that the PL intensity decreases as the interparticle coupling increases. This anticorrelation is explained by a theoretical model where both the gold-intrinsic d-band hole recombination probabilities as well as the field strength inside the nanostructure are considered. The scattering cross section or the field strength in the hot-spot between the tips of the bipyramids are not relevant for the PL intensity. Besides, we not only observe PL supported by dipolar plasmon resonances, but also measure and simulate PL supported by higher order plasmonic modes.

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confidence: 99%

Anticorrelation of Photoluminescence from Gold Nanoparticle Dimers with Hot-Spot Intensity

et al. 2016

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“…Within the large spectrum of gold nanostructures, numerous reports describe the intrinsic luminescence properties of such systems [106][107][108][109][110][111][112][113][114]. This interesting feature is a great alternative with regard to light scattering measurements [7,115], especially for biological or clinical applications with an easier detection and localization of these particles.…”

Section: Photoluminescence Of Individual Naked Plasmonic Nanoparticlesmentioning

confidence: 99%

“…In a recent review, Zheng et al proposed to consider several aspects influencing the final luminescent properties of gold particles. They postulated that luminescent AuNPs could be divided into two groups [109]: the molecular nanoparticles [116][117][118][119] (from gold cluster to 3 nm AuNPs) and the plasmonic nanoparticles [110,120]. The luminescent property of plasmonic nanoparticles is explained through different mechanisms.…”

Section: Photoluminescence Of Individual Naked Plasmonic Nanoparticlesmentioning

confidence: 99%

“…However, Dulkeith et al [121] measured the photoluminescence (PL) quantum yield of spherical AuNPs with various sizes and found a PL efficiency close to 10 -6 . In their very recent work, Rao et al [110] compared the PL of individual gold nanorods and bipyramids by combining PL and atomic force microscopy measurements with discrete dipole approximation simulations. They were able to obtain the PL quantum yield of both rods and bipyramids.…”

Section: Photoluminescence Of Individual Naked Plasmonic Nanoparticlesmentioning

confidence: 99%

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From gold nanoparticles to luminescent nano-objects: experimental aspects for better gold-chromophore interactions

Navarro¹,

Lerouge

2016

Nanophotonics

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Abstract:Gold nanoparticles have been the center of interest for scientists since many decades. Within the last 20 years, the research in that field has soared with the possibility to design and study nanoparticles with controlled shapes. From spheres to more complex shapes such as stars, or anisotropic architectures like rods or bipyramids, these new systems feature plasmonic properties making them the tools of choice for studies on light-matter interactions. In that context, fluorescence quenching and enhancement by gold nanostructures is a growing field of research. In this review, we report a nonexhaustive summary of the synthetic modes for various shapes and sizes of isotropic and anisotropic nanoparticles. We then focus on fluorescent studies of these gold nano-objects, either considering "bare" particles (without modifications) or hybrid particles (surface interaction with a chromophore). In the latter case, the well-known metal-enhanced fluorescence (MEF) is more particularly developed; the mechanisms of MEF are discussed in terms of the additional radiative and non-radiative decay rates caused by several parameters such as the vicinity of the chromophore to the metal or the size and shape of the nanostructures.

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“…For example, the roughened gold surface has been reported to allow for enhancing the PL intensity, 12 where the PL enhancement is gained from the improvement of both excitation and emission efficiency by enhancing the local electric fields associated with the excitations of the LSPRs. Over the past few years, the plasmon-enhanced PL has been extensively investigated in various gold nanostructures such as nanospheres, 13,14 nanorods, 7,14,15 nanoflowers, 16 nanobipyramids, 17 nanodisk arrays, 18 silver nanowire on a dielectric spacer/gold surface, 19 and gold nanobeam-silver nanowire cross-like nanostructure, 20 with the main research focus having been placed on the mechanism of radiative recombination of electrons and holes, the PL intensity maximization, and even controlling the polarization of PL emission. Owing to the strong coupling between the excited electron-hole pairs and the LSPRs, the position and shape of the plasmon-enhanced PL spectra have been demonstrated to be modulated by the LSPRs.…”

Section: Introductionmentioning

confidence: 99%

Shaping the photoluminescence from gold nanoshells by cavity plasmons in dielectric-metal core-shell resonators

Sun

Wan

et al. 2016

AIP Advances

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We report experimental investigation of the photoluminescence (PL) generated from the gold nanoshells of the dielectric-metal core-shell resonators (DMCSR) that support multipolar electric and magnetic based cavity plasmon resonances. Significantly enhanced and modulated PL spectrum is observed. By comparing the experimental results with analytical Mie calculations, we are able to demonstrate that the observed reshaping effects are due to the excitations of those narrow-band cavity plasmon resonances. We also present that the variation on the dielectric core size allows for tuning the cavity plasmon resonance wavelengths and thus the peak positions of the PL spectrum.

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Comparison of Photoluminescence Quantum Yield of Single Gold Nanobipyramids and Gold Nanorods

Cited by 102 publications

References 43 publications

Anticorrelation of Photoluminescence from Gold Nanoparticle Dimers with Hot-Spot Intensity

Anticorrelation of Photoluminescence from Gold Nanoparticle Dimers with Hot-Spot Intensity

From gold nanoparticles to luminescent nano-objects: experimental aspects for better gold-chromophore interactions

Shaping the photoluminescence from gold nanoshells by cavity plasmons in dielectric-metal core-shell resonators

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