The 1.85 μm spectroscopic properties of Er 3+ /Tm 3+ co-doped tellurite glasses containing silver nanoparticles

Huang, Bin; Zhou, Yaxun; Cheng, Pan; Zhou, Zizhong; Li, Jun; Gao, Yang

doi:10.1016/j.jallcom.2016.06.096

Cited by 21 publications

(3 citation statements)

References 56 publications

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“…Recent progress has exemplified that Ce 3+ ions can efficiently shorten the 4 I 11/2 of Er 3+ lifetime to enhance the DC process and improve emission beyond 1500 nm under irradiation by 980 nm light [19,20,33]. But for the Er 3+ -heavily doped nanoparticles excited with 808 nm light, the effect and the role of Ce 3+ ions are still unknown.…”

Section: Modulating Nir Iib Emission Of Er-based Dcnps Via Energy-cascaded Processmentioning

confidence: 99%

Engineering NIR-IIb fluorescence of Er-based lanthanide nanoparticles for through-skull targeted imaging and imaging-guided surgery of orthotopic glioma

et al. 2020

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Highly sensitive and specific discrimination of brain tumor margins from the surrounding parenchyma remains a formidable challenge. Limited by the short of photostable probes with deep tissue penetration and high efficiency of crossing the blood-brain-barrier (BBB), the development of fluorescence-guided surgery (FGS) of brain tumors was markedly constrained. Herein, we report the capability of the strong second near-infrared-IIb (NIR IIb, 1500−1700 nm) fluorescence from Er-based lanthanide nanoparticles in imaging-guided surgery of orthotopic glioma. We designed an energy-cascaded Er 3+ -Ce 3+ -A 3+ (A = Yb, Ho, Tm) system and prepared a series of NaErF 4 :Ce@NaAF 4 @NaLuF 4 down-conversion nanoparticles (DCNPs) for optimizing the influence of NaAF 4 interlayer and Ce 3+ dopants. We modified the optimal NaErF 4 :2.5 %Ce@NaYbF 4 (0.9 nm)@NaLuF 4 DCNPs with Dye-brush polymer (Dye-BP) to facilitate 4 I 13/2 → 4 I 15/2 transition, which leads to an impressive 675-fold enhancement of 1525 nm fluorescence in aqueous solution under 808 nm excitation due to the excellent energy-cascaded downconversion (ECD), in comparison with that of NaErF 4 nanoparticles. We further modified these highly bright nanoparticles with tumor-targeting angiopep-2 peptide, and efficiently delivered them to the glioma by using the focused ultrasound sonication (FUS) to temporarily open the BBB. We obtained the highest tumorto-background ratio (TBR = 12.5) ever reported in the targeted NIR IIb fluorescence imaging of small orthotopic glioma (size < 3 mm, depth> 3 mm) through intact skull and scalp, which was drastically improved to ∼150 after cardiac perfusion and craniotomy to ensure the precise resection of tumor. More importantly, the size of glioma measured from the width of fluorescence profile is very close to that from T 2 -weighted MRI images. Our work provides the insights into engineering NIR IIb fluorescence of lanthanide nanoparticles, and demonstrates the great potential of NIR IIb fluorescence imaging-guided surgery of tumor.

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Section: Modulating Nir Iib Emission Of Er-based Dcnps Via Energy-cascaded Processmentioning

confidence: 99%

Engineering NIR-IIb fluorescence of Er-based lanthanide nanoparticles for through-skull targeted imaging and imaging-guided surgery of orthotopic glioma

et al. 2020

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“…In this energy transfer process, one phonon was likely needed to compensate the energy mismatch of about 700 cm −1 [28]. In current reports of the authors' knowledge [28,29], Er 3+ /Tm 3+ co-doped materials had been used to excite the visible light and near-infrared fluorescence by the 980 nm or 808 nm laser diode. When the materials were fabricated to the microsphere, the internal laser oscillation was inherent with the WGMs.…”

Section: Resultsmentioning

confidence: 99%

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Qin

Huang

Liao

et al. 2019

J. Opt.

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From Er3+/Tm3+ co-doped tellurite glass microspheres, simultaneous laser oscillation at 1.9 μm, and green and red fluorescence emissions with three photons upconversion luminescence were obtained. The microsphere was pumped by a low-cost 1550 nm broadband amplified spontaneous emission source instead of a bulky and expensive tunable laser. It as a non-polarized light provided a wide wavelength range and the multiple wavelengths resonant absorption was obviously observed from the transmission spectra. The use of broadband source made the entire microsphere laser more adaptively stable to withstand the vibration interference and temperature variations. The coupled threshold power was as low as 1.5 mW. It was demonstrated that the Er3+ ions acted as sensitizers to efficiently absorb the pump photons and transfer energy to Tm3+ ions. Therefore, this approach would have potential applications in optical fiber lasers, sensors and lighting devices.

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“…However, the density of glass seem to decreases slightly at the 1.0 mol% of AgNO 3 . This may be due to the fact that an occupation of Ag between 1.0 to 1.5 mol% in the free space region in the network structure cause the compactness reduction of the glass network [10]. Meanwhile, the result of molar volume of the glass sample decrease from 29.642 cm 3 /mol to 29.169 cm 3 /mol with the increasing concentration of AgNO 3 from 0.0 mol% to 1.0 mol% before it start to increase to 29.324 cm 3 /mol at 1.5 mol%.…”

Section: Methodsmentioning

confidence: 99%

Effect of Silver on the Physical and Structural Properties of Lead Neodymium Borotellurite Glass System

2018

MJAS

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Neodymium doped borotellurite glass is well known to be one of the most promising candidate due to it various applications. Nd 3+ doped lead borotellurite glasses containing silver were successfully been prepared by conventional melt-quenching method with the chemical composition (69.5-x)TeO 2 -20B 2 O 3 -10PbO-0.5Nd 2 O 3 -xAgNO 3 (where x = 0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol %). The physical properties such as density, molar volume and oxygen packing density were measured. Their structural properties of the glass system were studied via X-Ray Diffraction (XRD) analysis and Fourier Transform Infrared (FTIR) spectroscopy. From the result, the amorphous nature of the prepared glass samples have been confirmed through X-ray diffraction spectral analysis. The presence of Te-O-Te or O-Te-O, Ag-O, Te-O-Pb and B-O and characteristic of the hydrogen bond in the prepared glasses were explored through the FTIR spectral studies recorded in the 400-4000 cm -1 wave number range at room temperature. Meanwhile, the results of physical properties are found to vary with respect to concentration of AgNO 3 content. Some other results will be reported and discussed.Keywords: neodymium, borotellurite, silver, physical properties, structural properties Abstrak Kaca borotelurit di dop neodimium merupakan salah satu bahan yang diyakini disebabkan oleh kepelbagaian aplikasinya. Kaca borotelurit di dop Nd 3+ mengandungi perak telah berjaya disediakan dengan kaedah konvensional sepuh lindap dengan komposisi kimia (69.5-x)TeO 2 -20B 2 O 3 -10PbO-0.5Nd 2 O 3 -xAgNO 3 (di mana x = 0, 0.5, 1.0, 1.5, 2.0 dan 2.5 mol%). Sifat-sifat fizikal seperti ketumpatan, isipadu molar dan ketumpatan padat oksigen telah diukur. Sifat-sifat struktur sistem kaca ini telah dikaji melalui analisis pembelauan sinar-X (XRD) dan spektroskopi inframerah transformasi Fourier (FTIR). Dari hasil kajian, sifat semulajadi amorfus sampel kaca yang disediakan telah disahkan melalui analisis spektra pembelauan sinar-X. Kehadiran Te-O-Te atau O-Te-O, Ag-O, Te-O-Pb, B-O dan ciri-ciri ikatan hidrogen dalam kaca yang disediakan telah diterokai melalui kajian spektra FTIR yang direkodkan dalam julat gelombang 400-4000 cm -1 pada suhu bilik. Sementara itu, hasil kajian bagi sifat fizikal didapati berubah mengikut kepekatan kandungan AgNO 3 . Beberapa keputusan lain akan dilaporkan dan dibincangkan.

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The 1.85 μm spectroscopic properties of Er 3+ /Tm 3+ co-doped tellurite glasses containing silver nanoparticles

Cited by 21 publications

References 56 publications

Engineering NIR-IIb fluorescence of Er-based lanthanide nanoparticles for through-skull targeted imaging and imaging-guided surgery of orthotopic glioma

Engineering NIR-IIb fluorescence of Er-based lanthanide nanoparticles for through-skull targeted imaging and imaging-guided surgery of orthotopic glioma

1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Effect of Silver on the Physical and Structural Properties of Lead Neodymium Borotellurite Glass System

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The 1.85 μm spectroscopic properties of Er 3+ /Tm 3+ co-doped tellurite glasses containing silver nanoparticles

Cited by 21 publications

References 56 publications

Engineering NIR-IIb fluorescence of Er-based lanthanide nanoparticles for through-skull targeted imaging and imaging-guided surgery of orthotopic glioma

Engineering NIR-IIb fluorescence of Er-based lanthanide nanoparticles for through-skull targeted imaging and imaging-guided surgery of orthotopic glioma

1.9 μm laser and visible light emissions in Er3+/Tm3+ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source

Effect of Silver on the Physical and Structural Properties of Lead Neodymium Borotellurite Glass System

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Product

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1.9 μm laser and visible light emissions in Er³⁺/Tm³⁺ co-doped tellurite glass microspheres pumped by a broadband amplified spontaneous emission source