Emission enhancement through Nd3+-Yb3+ energy transfer in multifunctional NaGdF4 nanocrystals

Pedraza, Francisco; Rightsell, Chris; Kumar, Gaurav; Giuliani, Jason; Montón, Carlos; Sardar, Dhiraj K.

doi:10.1063/1.4984140

Cited by 17 publications

(7 citation statements)

References 39 publications

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“…NaYF 4 :10%Nd,4%Yb NPs (water-heating core) were synthesized for a 1.0 µm luminescence emission under 808 nm excitation via a thermal decomposition method 17 . The morphology of the synthesized water-heating core was uniform and spherical with an average NP size of 18.5 ± 1.7 nm (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

A local water molecular-heating strategy for near-infrared long-lifetime imaging-guided photothermal therapy of glioblastoma

et al. 2023

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Owing to the strong absorption of water in the near-infrared (NIR) region near 1.0 μm, this wavelength is considered unsuitable as an imaging and analytical signal in biological environments. However, 1.0 μm NIR can be converted into heat and used as a local water-molecular heating strategy for the photothermal therapy of biological tissues. Herein, we describe a Nd-Yb co-doped nanomaterial (water-heating nanoparticles (NPs)) as strong 1.0 μm emissive NPs to target the absorption band of water. Furthermore, introducing Tm ions into the water-heating NPs improve the NIR lifetime, enabling the development of a NIR imaging-guided water-heating probe (water-heating NIR NPs). In the glioblastoma multiforme male mouse model, tumor-targeted water-heating NIR NPs reduce the tumor volume by 78.9% in the presence of high-resolution intracranial NIR long-lifetime imaging. Hence, water-heating NIR NPs can be used as a promising nanomaterial for imaging and photothermal ablation in deep-tissue-bearing tumor therapy.

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Section: Resultsmentioning

confidence: 99%

A local water molecular-heating strategy for near-infrared long-lifetime imaging-guided photothermal therapy of glioblastoma

et al. 2023

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“…Preparation and characterization of local water-molecular heating nanoparticles NaYF 4 :10%Nd,4%Yb NPs (water-heating core) were synthesized for a 1.0 µm luminescence emission under 808 nm excitation via a thermal decomposition method 17 . Morphology of the synthesized waterheating core was uniform and spherical with an average nanoparticle size of 18.5 ± 1.7 nm (Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

A Local Water Molecular-heating Strategy for NIR Long-lifetime Imaging-guided Photothermal Therapy of Deep-tissue-bearing Tumor

Kang

Kim

Han

et al. 2022

Preprint

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1.0 µm near-infrared (NIR) is considered unsuitable as an imaging and analytical signal in biological environments owing to the strong absorption of water at around the regions. Conversely, the 1.0 µm NIR can be converted to heat and used as a local water-molecular heating strategy for photothermal therapy of biological tissues. Herein, we designed a Nd-Yb co-doped nanomaterial (water-heating nanoparticles (NPs)) as a strong 1.0 µm emissive NP to target the absorption band of water. Furthermore, introducing Tm ions into the water-heating NPs improved the NIR lifetime, and it was developed as an NIR imaging-guided water-heating probe (water-heating NIR NPs). In the glioblastoma multiforme (GBM) mouse model, tumor-targeted water-heating NIR NPs reduced the tumor volume by 78.9% in the presence of high-resolution intracranial NIR long-lifetime imaging. Hence, water-heating NIR NPs can be used as a novel nanomaterial for imaging and photothermal ablation in deep-tissue-bearing tumor therapy.

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“…3+ 550 ºC 1min 0-10 NaGdF 3+ xerogel Absorbance (a.u.) by the solvothermal method [15,54]. The incorporation of MTES as alkoxide co-precursor was also analysed studying its effect on the crystallisation mechanism.…”

Section: Si-ch 3 (Mtes) Si-ch 3 (Mtes)mentioning

confidence: 99%

Novel sol-gel SiO2-NaGdF4 transparent nano-glass-ceramics

Velázquez

Mosa

Gorni

et al. 2019

Journal of Non-Crystalline Solids

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Novel transparent oxyfluoride nano-glass-ceramics containing undoped and 0.5 Eu 3+ (mol%) doped NaGdF 4 nanocrystals (NCs), were obtained by sol-gel for the first time. X-ray diffraction (XRD) confirms the precipitation of αand β-NaGdF 4 NCs with a size ranging between 5 and 24 nm. When the Na:Gd ratio, temperature and heating time are fixed to 0.95:1, 550-600°C and 1-8 h, respectively, only the β-NaGdF 4 phase precipitates. These results are confirmed by high-resolution transmission electron microscopy (HRTEM). The decomposition of trifluoroacetic acid (TFA) and the formation of fluoride lattice bonds were studied by Fourier transform infrared spectroscopy (FTIR). Thus, the sol-gel route permits NaGdF 4 glass-ceramics to be obtained through the control of Na:Gd ratio, temperature and heating time. The incorporation of dopant ions in the NaGdF 4 NCs was confirmed by photoluminescence measurements which show narrow and well-resolved Eu 3+ emission and excitation spectra in GCs. Moreover, the low asymmetry ratio values between the electric dipole ( 5 D 0 → 7 F 2 ) to the magnetic dipole ( 5 D 0 → 7 F 1 ) transitions indicate that Eu 3+ ions are incorporated in the NaGdF 4 NCs. Furthermore, efficient Gd 3+ → Eu 3+ energy transfer results in an enhancement of the reddish Eu 3+ emissions, further supported by fluorescence decay lifetimes.

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Emission enhancement through Nd3+-Yb3+ energy transfer in multifunctional NaGdF4 nanocrystals

Cited by 17 publications

References 39 publications

A local water molecular-heating strategy for near-infrared long-lifetime imaging-guided photothermal therapy of glioblastoma

A local water molecular-heating strategy for near-infrared long-lifetime imaging-guided photothermal therapy of glioblastoma

A Local Water Molecular-heating Strategy for NIR Long-lifetime Imaging-guided Photothermal Therapy of Deep-tissue-bearing Tumor

Novel sol-gel SiO2-NaGdF4 transparent nano-glass-ceramics

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