Highly plasmon-enhanced upconversion emissions from Au@β-NaYF4:Yb,Tm hybrid nanostructures

Liu, Ning; Qin, Weiping; Qin, Guanshi; Jiang, Tao; Zhao, Dan

doi:10.1039/c1cc11179e

Cited by 180 publications

(129 citation statements)

References 22 publications

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“…The interplay between these two effects sets an upper limit on the maximum achievable efficiency improvement from a single particle. In a recent study, a 30 to 50-fold upconversion enhancement in the visible range was reported when a UCNP was covered with a 5-10 nm dielectric spacing layer before it was coated by metallic nanoparticles [22].…”

Section: Upconversion Enhancement Through Plasmonics Nanocavitiesmentioning

confidence: 99%

“…So far, decorating individual UCNPs by gold nanoparticles has been perhaps one of the most promising approaches [21][22][23]. In this arrangement, the localization of the field due to the presence of metallic nanoparticles tends to enhance the radiative decay rates through the Purcell effect [36].…”

Section: Upconversion Enhancement Through Plasmonics Nanocavitiesmentioning

confidence: 99%

“…Plasmonics provides yet another promising route towards this goal. Plasmonic assisted upconversion has been the focus of a number of studies in the past few years [21][22][23][24][25][26]. Most of these investigations consider scenarios in which either individual nanoparticles are covered with a metallic coating or metal nanoparticles are introduced in the vicinity of a UCNP.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced UV upconversion emission using plasmonic nanocavities

Halawany

Hodaei

et al. 2016

Opt. Express

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Upconversion of near infrared (NIR) into ultraviolet (UV) radiation could lead to a number of applications in bio-imaging, diagnostics and drug delivery. However, for bare nanoparticles, the conversion efficiency is extremely low. In this work, we experimentally demonstrate strongly enhanced upconversion emission from an ensemble of β-NaYF 4 :Gd 3+ /Yb 3+ /Tm 3+ @NaLuF 4 core-shell nanoparticles trapped in judiciously designed plasmonic nanocavities. In doing so, different metal platforms and nanostructures are systematically investigated. Our results indicate that using a cross-shape silver nanocavity, a record high enhancement of 170-fold can be obtained in the UV band centered at a wavelength of 345 nm. The observed upconversion efficiency improvement may be attributed to the increased absorption at NIR, the tailored photonic local density of states, and the light out-coupling characteristics of the cavity. References and links1. F. Auzel, "Upconversion and anti-Stokes processes with f and d ions in solids," Chem. Rev. 104(1), 139-174 (2004). 2. X. Li, F. Zhang, and D. Zhao, "Highly efficient lanthanide upconverting nanomaterials: progresses and challenges," Nano Today 8(6), 643-676 (2013). 3. N. Bloembergen, "Solid state infrared quantum counters," Phys. Rev. Lett. 2(3), 84-85 (1959) . 36. E. M. Purcell, "Spontaneous emission probabilities at radio frequencies," Phys. Rev. 69, 681 (1946). 37.

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Section: Upconversion Enhancement Through Plasmonics Nanocavitiesmentioning

confidence: 99%

Section: Upconversion Enhancement Through Plasmonics Nanocavitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Enhanced UV upconversion emission using plasmonic nanocavities

Halawany

Hodaei

et al. 2016

Opt. Express

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“…In addition, a series of similar upconversion nanocomposites with noble metals has been fabricated to enhance the upconversion emissions. [45][46][47][48][49] Unfortunately, most of this work focuses on observing the enhancement effects rather than describing the detailed mechanism behind them. Therefore, there is no confirmed information available to direct the design of such nanocomposites to further improve the upconversion emissions until now.…”

Section: Figurementioning

confidence: 99%

Recent advances in the optimization and functionalization of upconversion nanomaterials for in vivo bioapplications

Feng

Zhu

2013

NPG Asia Mater

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Upconversion nanophosphors are considered to be important components in advanced materials designed for in vivo bioapplications and benefit from their unique anti-Stokes upconversion luminescence properties. The near-infrared light excitation allows for a large penetration depth in biotissues during in vivo applications. This review presents recent advances in the optimization and functionalization of upconversion nanomaterials for bioimaging and in vivo therapy. The most effective protocols are introduced in detail. Current limitations and future prospects are also included to provide a general summary and suggest future research directions.

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“…The recent trends in the field of lanthanide complexes are to introduce metal nanoparticles to tune its luminescent behavior and boost their efficiency for optical device applications. [11][12][13][14] Recently, Parola et al have given a detailed overview on different types of lanthanide based hybrid nanomaterials and demonstrated that, controlled coupling between plasmonics (attaching metal nanoparticles) and luminescence opens a wide field of intense research. 15 The luminescence mechanism of the lanthanide complexes are based on the ligand absorption coefficient and energy transfer to central metal ion (lanthanides).…”

Section: Introductionmentioning

confidence: 99%

Silver nanoparticles embedded hybrid organometallic complexes: Structural interactions, photo-induced energy transfer, plasmonic effect and optical thermometry

2018

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ARTICLES YOU MAY BE INTERESTED INFemtosecond laser-assisted thermal annealing of Ni electrode on SiC substrate AIP Advances 8, 065204 (2018); https://doi.org/10.1063/1.5036804Synthesis and enhanced third-order nonlinear optical effect of ZnSe/graphene composites AIP Advances 8, 065025 (2018); https://doi.org/10.1063/1.5027523The influence of negative pressure during gas extraction in low-permeability coal seams on the effect of gas extraction AIP Advances 8, 065120 (2018) A novel hybrid material comprising of two β-diketonate complexes, Tb(ASA) 3 Phen (TAP) and Eu(TTA) 3 Phen (ETP), has been synthesized and studied its photo-physics, energy transfer and optical thermometry applications. Using XRD and FTIR spectra, it has been demonstrated that both the complexes maintain their core entity and show weak interaction between them in the hybrid complex (HC). The TEM images show the coating of ETP layers over nano-fibrous TAP and further, embedded with Ag nanoparticles over HC. It has been observed that ligands (Phen, TTA as well as ASA) absorb the UV radiation and undergoes single to triplet via intersystem crossing transitions by transferring its excitation energy to central lanthanide ions (Eu 3+ and Tb 3+ ). In this strategy, an efficient energy transfer between two different species i.e. ASA to Tb 3+ (in TAP complex) to Eu +3 ions (of ETP complex) has also been observed. To probe and verify the energy transfer mechanism, life time measurements have been carried out. The life time of Tb 3+ decreases in HC as compared with TAP, whereas the life time of Eu 3+ increases in HC as compared with ETP. The addition of silver nanoparticles (AgNPs) again enhances the fluorescence intensity of Eu 3+ emission band. The prepared HC has further been demonstrated for ambient range temperature (295-365 K) sensing and the sensitivity of the material is found to be 6.8% change in signal per K. The strong optical property and non-toxic nature of this HC is useful in biomedical, bio-imaging and energy harvesting applications. © 2018 Author (s)

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Highly plasmon-enhanced upconversion emissions from Au@β-NaYF4:Yb,Tm hybrid nanostructures

Abstract: Yb,Tm hybrid nanostructures. This demonstrates that the plasmon field enhancement effect is the main reason for the improved UC emission efficiency.

Cited by 180 publications

References 22 publications

Enhanced UV upconversion emission using plasmonic nanocavities

Enhanced UV upconversion emission using plasmonic nanocavities

Recent advances in the optimization and functionalization of upconversion nanomaterials for in vivo bioapplications

Silver nanoparticles embedded hybrid organometallic complexes: Structural interactions, photo-induced energy transfer, plasmonic effect and optical thermometry

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