A vacuum-annealing strategy for improving near-infrared super long persistent luminescence in Cr3+ doped zinc gallogermanate nanoparticles for bio-imaging

2016 ◽  
Vol 45 (4) ◽  
pp. 1364-1372 ◽  
Author(s):  
Jian Yang ◽  
Yuxue Liu ◽  
Duanting Yan ◽  
Hancheng Zhu ◽  
Chunguang Liu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Near Infrared ◽  
Vacuum Annealing ◽  
Persistent Luminescence ◽  
Long Afterglow ◽  
Bio Imaging

Novel ZGGO:Cr3+ nanoparticles with NIR super long afterglow were prepared via a hydrothermal method and a subsequent vacuum-annealing strategy.

scholarly journals Near-infrared long persistent luminescence of Er3+ in garnet for the third bio-imaging window

2016 ◽  
Vol 4 (47) ◽  
pp. 11096-11103 ◽  
Author(s):  
Jian Xu ◽  
Daisuke Murata ◽  
Jumpei Ueda ◽  
Setsuhisa Tanabe
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Persistent Luminescence ◽  
The Third ◽  
Bio Imaging

By utilizing efficient persistent energy transfer from Ce3+ to Er3+, we have successfully developed a novel garnet persistent phosphor of Y3Al2Ga3O12 doped with Er3+, Ce3+, Cr3+ ions (YAGG:Er–Ce–Cr) exhibiting long (>10 h) near-infrared (NIR) persistent luminescence (PersL) in the broad range from 1450 nm to 1670 nm due to the typical Er3+:4I13/2 → 4I15/2 transition in garnet.

Native point defect modulated Cr3+–LaAlO3 as an in vitro excited contrast medium for in vivo near-infrared persistent deep-tissue bio-imaging

2021 ◽  
Vol 57 (74) ◽  
pp. 9366-9369
Author(s):  
Lu Lu ◽  
Mingzi Sun ◽  
Tong Wu ◽  
Qiuyang Lu ◽  
Bolong Huang
Keyword(s):  
Contrast Medium ◽  
Decay Time ◽  
Luminescence Intensity ◽  
Near Infrared ◽  
Persistent Luminescence ◽  
Deep Tissue ◽  
Native Point Defect ◽  
Bio Imaging

A comprehensive defected-assisted mechanism for persistent luminescence in the NIR-II and NIR-III windows has been proposed in Cr-doped LaAlO3 nanoparticles, where both decay time and luminescence intensity can be flexibly tuned by different defects.

scholarly journals A Pr3+ doping strategy for simultaneously optimizing the size and near infrared persistent luminescence of ZGGO:Cr3+ nanoparticles for potential bio-imaging

2017 ◽  
Vol 19 (36) ◽  
pp. 24513-24521 ◽  
Author(s):  
Zheng Gong ◽  
Yuxue Liu ◽  
Jian Yang ◽  
Duanting Yan ◽  
Hancheng Zhu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Persistent Luminescence ◽  
Deep Tissue ◽  
Bio Imaging

The improved near infrared persistent luminescence of ZGGO:Cr3+ nanoparticles achieved by adopting a Pr3+ doping strategy facilitates deep tissue bio-imaging.

scholarly journals Uniform Spheres of α-NaYF4:RE3+ (RE=Eu, Tb, Ce, Er, and Tm): Template-Free Synthesis, Multi-Color Photoluminescence, and Their Application in Cellular Imaging

Crystals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 119
Author(s):  
Xiaofeng Fan ◽  
Laiqin Gu ◽  
Yiling Hu ◽  
Qi Zhu
Keyword(s):  
Near Infrared ◽  
Infrared Emission ◽  
Particle Sizes ◽  
Hydrothermal Processing ◽  
High Brightness ◽  
Luminescent Probes ◽  
Bio Imaging ◽  
Template Free ◽  
Near Infrared Emission

Uniformly dispersed luminescent probes with a high brightness and high resolution are desired in bio imaging fields. Here, ~100 nm sized and well-dispersed spheres of RE3+ doped α-NaYF4 (rare earth (RE) = Eu, Tb, Ce, Er, and Tm) have been facile synthesized through hydrothermal processing in the absence of a template, followed by a proper annealing. The processing window of the cubic structured spheres is wide, because the hydrothermal products are independent of the processing conditions, including reaction time and temperature. The original morphology and crystal structure can be well retained with a calcination temperature up to 600 °C. However, calcination gives rise to a reduction of particle sizes, as a result of the crystallite growth and densification. Under ultraviolet radiation, α-NaYF4:RE3+ spheres show characteristic f-f emissions of RE3+ (RE = Eu, Tb, Ce, Er, and Tm), and exhibit orange red, green, ultraviolet (UV), blue green, and blue emissions, respectively. Mainly because of the near-infrared emission at ~697 nm (5D0→7F4 transitions of Eu3+), the successful imaging of macrophages was achieved by NH2-NaYF4:Eu3+ probes, indicating their excellent imaging capacity for cells in vitro.

Near-infrared persistent luminescence hollow mesoporous nanospheres for drug delivery and in vivo renewable imaging

2016 ◽  
Vol 4 (48) ◽  
pp. 7845-7851 ◽  
Author(s):  
Junpeng Shi ◽  
Meng Sun ◽  
Xia Sun ◽  
Hongwu Zhang
Keyword(s):  
Drug Delivery ◽  
Near Infrared ◽  
High Sensitivity ◽  
Drug Carriers ◽  
Template Method ◽  
Persistent Luminescence ◽  
Deep Tissue ◽  
Large Capacity

Near-infrared persistent luminescence hollow mesoporous nanospheres have been synthesized via a template method. These nanospheres can be used as large capacity drug carriers and realize super long-term and high sensitivity tracking of drug delivery in deep tissue.

Gold nanoparticle-enhanced near infrared fluorescent nanocomposites for targeted bio-imaging

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 20-26 ◽  
Author(s):  
Hao Cheng ◽  
Chuanxi Wang ◽  
Zhenzhu Xu ◽  
Huihui Lin ◽  
Chi Zhang
Keyword(s):  
Folic Acid ◽  
Cancer Cells ◽  
Gold Nanoparticle ◽  
Near Infrared ◽  
Water Solubility ◽  
Imaging Agents ◽  
Nir Fluorescence ◽  
Target Imaging ◽  
Bio Imaging ◽  
Low Toxicity

Folic acid-conjugated nanocomposites with NIR fluorescence, water-solubility, and low toxicity are prepared and used as target-imaging agents for cancer cells.

Broadband near-infrared persistent luminescence in Ni2+-doped transparent glass-ceramic ZnGa2O4

2021 ◽  
Author(s):  
Tianpeng Liu ◽  
Zhiyuan Liu ◽  
Jiao Wu ◽  
Kang Zhang ◽  
Hongxiang An ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Glass Ceramic ◽  
Near Infrared ◽  
Transition Metal Ions ◽  
Persistent Luminescence ◽  
Transparent Glass ◽  
Luminescence Centers ◽  
Transparent Glass Ceramic

Transparent glass-ceramic is a highly attractive class of materials for photonic application. Transition metal ions are promising candidates for luminescence centers thanks to the sensitivity to the ligand ions of...

Red/near-infrared/short-wave infrared multi-band persistent luminescence in Pr3+-doped persistent phosphors

2017 ◽  
Vol 46 (34) ◽  
pp. 11149-11153 ◽  
Author(s):  
Yanjie Liang ◽  
Feng Liu ◽  
Yafei Chen ◽  
Xianli Wang ◽  
Kangning Sun ◽  
...  
Keyword(s):  
Near Infrared ◽  
Short Wave ◽  
Persistent Luminescence ◽  
Short Wave Infrared ◽  
Multi Band

MgGeO3:Pr3+ and CdSiO3:Pr3+ red/near-infrared/short-wave infrared multi-band persistent phosphors exhibit long-lasting (>120 h) afterglow at 625 nm, 900 nm and 1085 nm.

scholarly journals Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF4: Tb3+

2019 ◽  
Author(s):  
Yue Hu ◽  
Yanmin Yang ◽  
Xiaoxiao Li ◽  
Xin Wang ◽  
Yunqian Li ◽  
...  
Keyword(s):  
Photodynamic Therapy ◽  
Light Source ◽  
Green Emission ◽  
Persistent Luminescence ◽  
Tunneling Model ◽  
X Ray ◽  
Long Afterglow ◽  
Photo Stability ◽  
F Centers

Here, we have discovered a X-ray excited long afterglow phosphor β-NaYF4: Tb3+. After the irradiation of X-ray, the green emission can persist for more than 240 h. After 36 h, the afterglow intensity arrived at 0.69 mcd•m-2, which can clearly be observed by naked eyes. Even after 84 h, the afterglow emission brightness still reached 0.087 mcd•m-2. Also, combined with the results of thermoluminescence and photoluminescence, the super long afterglow emission of β-NaYF4: Tb3+ can be ascribed to the tunneling model associated with F centers. More importantly, the super long green afterglow emission of β-NaYF4: Tb3+ has been successfully used as in vivo light source to activate g-C3N4 for photodynamic therapy（PDT）and bacteria destruction. Furthermore, super long persistent luminescence of β-NaYF4: Tb3+ could be repeatedly charged by X-ray for many circulations, which indicates that the phosphors have high photo stability under repeated cycles of alternating X-ray irradiation.

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