Ionic liquid-assisted synthesis of Yb3+-Tm3+ codoped Y7O6F9 petal shaped microcrystals with enhanced upconversion emission

Zhao, Jinbo; Wu, Lili; Zhang, Chuanjiang; Li, Tingxi; Jiang, Qinglong; Wang, Feng; Zhao, Ping; Ryu, Jihye; Guo, Zhanhu

doi:10.1016/j.materresbull.2018.03.003

Cited by 12 publications

(4 citation statements)

References 42 publications

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“…Zhao et al have illustrated the effect of IL on the luminescence behavior of Y 2 O 3 :Yb 3+ /Tm 3+ . In this study, the upconversion emission efficiency of Y 7 O 6 F 9 :Yb 3+ /Tm 3+ microspheres synthesized using the high concentration of [C 4 mim][BF 4 ] IL is much stronger than that of Y 2 O 3 :Yb 3+ / Tm 3+ microspheres synthesized without IL (Zhao et al, 2018). The molar ratio of [C 4 mim][BF 4 ]/Ln 3+ also brings about a good effect on the emission of YF 3 doped with Eu (5%) (Zhong et al, 2009).…”

Section: Influence Of Ils On the Optical Properties Of Ln 3+ -Doped Nanoparticlesmentioning

confidence: 77%

“…Subsequently, emission of either higher or lower energy of photons takes place from the RE 3+ ions known as an activator (A). The most common examples of such photophysical processes are the Ce 3+ and Tb 3+ ions codoped nanoparticles and Yb 3+ and Ho 3+ /Er 3+ /Tm 3+ co-doped nanoparticles (Zharkouskaya et al, 2008;Zhang and Chen, 2015;Liu et al, 2018;Zhao et al, 2018). Upon exciting Ce 3+ ions in the UV region of photons, excited electrons are promoted from 4f to empty orbitals of 5d followed by radiative emission from 2 D to 2 F 5/2,7/2 lower energy level of Ce 3+ (Ghosh et al, 2010).…”

Section: (Iii) Energy Transfermentioning

confidence: 99%

“…However, their luminescence intensity can be tuned by varying the crystal phase of host materials, lattice strain, and morphology and making core-shell structures (Gai et al, 2014;Sharma et al, 2017a). Therefore, several host materials have been explored for doping of Ln 3+ ions, including alkali/alkaline/ lanthanide-based binary/ternary fluorides, lanthanide orthophosphates (LnPO 4 ), and oxides (Ln 2 O 3 ) (Guo et al, 2010;He et al, 2012;Jiang et al, 2012;Alammar et al, 2016;Cybińska et al, 2016;Sharma et al, 2017a;Zhao et al, 2018). In order to prepare the aforementioned host materials, numbers of synthesis methods, such as sol-gel, thermal decomposition, hydrothermal/solvothermal, microwave-assisted, sonochemicalassisted techniques, should be readily employed (He et al, 2011a;Gai et al, 2014;Kuzmanoski et al, 2015;Alammar et al, 2016;Sharma et al, 2017a).…”

Section: Introductionmentioning

confidence: 99%

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Lanthanide-Doped Luminescent Nanophosphors via Ionic Liquids

Sharma¹,

Ghosh

2021

Front. Chem.

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Lanthanide (Ln3+) ion(s)-doped or rare-earth ion(s)-doped nanomaterials have been considered a very important class of nanophosphors for various photonic and biophotonic applications. Unlike semiconductors and organic-based luminescent particles, the optical properties of Ln3+-doped nanophosphors are independent of the size of the nanoparticles. However, by varying the crystal phase, morphology, and lattice strain of the host materials along with making core-shell structure, the relaxation dynamics of dopant Ln3+ ions can be effectively tuned. Interestingly, a judicious choice of dopant ions leads to unparallel photophysical dynamics, such as quantum cutting, upconversion, and energy transfer. Recently, ionic liquids (ILs) have drawn tremendous attention in the field of nanomaterials synthesis due to their unique properties like negligible vapor pressure, nonflammability, and, most importantly, tunability; thus, they are often called “green” and “designer” solvents. This review article provides a critical overview of the latest developments in the ILs-assisted synthesis of rare-earth-doped nanomaterials and their subsequent photonic/biophotonic applications, such as energy-efficient lighting and solar cell applications, photodynamic therapy, and in vivo and in vitro bioimaging. This article will emphasize how luminescence dynamics of dopant rare-earth ions can be tuned by changing the basic properties of the host materials like crystal phase, morphology, and lattice strain, which can be eventually tuned by various properties of ILs such as cation/anion combination, alkyl chain length, and viscosity. Last but not least, different aspects of ILs like their ability to act as templating agents, solvents, and reaction partners and sometimes their “three-in-one” use in nanomaterials synthesis are highlighted along with various photoluminescence mechanisms of Ln3+ ion like up- and downconversion (UC and DC).

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Section: Influence Of Ils On the Optical Properties Of Ln 3+ -Doped Nanoparticlesmentioning

confidence: 77%

Section: (Iii) Energy Transfermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Lanthanide-Doped Luminescent Nanophosphors via Ionic Liquids

Sharma¹,

Ghosh

2021

Front. Chem.

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“…Oxyfluoride provides lower phonon energy and crystal structure inversion asymmetry and has been extensively studied as a rare-earth-doped matrix. [59][60][61][62][63][64][65][66] Wang's team has proved the superiority by exploring the emission performance in Y 7 O 6 F 9 :1%Er, 5%Yb. 66 Moreover, thermal energy levels of Er 3+ under sensitizing of Yb 3+ have also been applied for optical temperature monitoring.…”

Section: Introductionmentioning

confidence: 99%

Multiple fluorescence-temperature feedback in Y₇O₆F₉:Er/Yb crystal-embedded polyacrylonitrile fibers

Liu

Zhao

et al. 2023

New J. Chem.

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Tunable Emissions of Upconversion Fluorescence for Security Applications

Yao

Tian

2018

Advanced Optical Materials

170

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The rampant appearance of counterfeiting has a serious adverse effect on every aspect in the global markets. Thus, the development of high‐tech security strategies has become an urgent challenge. Recently, lanthanide ions (Ln3+) doped materials open new avenues for concealing factual data and shield against counterfeiting because of their unique optical characteristics of color‐tunable emissions under near‐infrared excitation. The present review surveys the recent advances in Ln3+‐doped upconversion crystals (UCCs) as fluorescent functional inks toward designable and high‐level anti‐counterfeiting patterns and graphical encoding. The great achievements of fabrication of versatile security patterns can be ascribed to the combination of the single or multiple colorful UCCs with polymers, additives, and solvents. Moreover, the crucial factors including underlying mechanisms, synthetic methods of upconversion fluorescence materials, and the diverse printing technologies employed for patterning the fluorescence images have been highlighted, and the corresponding challenges and opportunities in this promising research area are presented. This review will help providing a fundamental understanding and guidance to rational design fluorescence optical labels based on Ln3+‐doped UCCs for broadening their applications in high‐level security fields.

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Ionic liquid-assisted synthesis of Yb3+-Tm3+ codoped Y7O6F9 petal shaped microcrystals with enhanced upconversion emission

Cited by 12 publications

References 42 publications

Lanthanide-Doped Luminescent Nanophosphors via Ionic Liquids

Lanthanide-Doped Luminescent Nanophosphors via Ionic Liquids

Multiple fluorescence-temperature feedback in Y₇O₆F₉:Er/Yb crystal-embedded polyacrylonitrile fibers

Tunable Emissions of Upconversion Fluorescence for Security Applications

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Ionic liquid-assisted synthesis of Yb3+-Tm3+ codoped Y7O6F9 petal shaped microcrystals with enhanced upconversion emission

Cited by 12 publications

References 42 publications

Lanthanide-Doped Luminescent Nanophosphors via Ionic Liquids

Lanthanide-Doped Luminescent Nanophosphors via Ionic Liquids

Multiple fluorescence-temperature feedback in Y7O6F9:Er/Yb crystal-embedded polyacrylonitrile fibers

Tunable Emissions of Upconversion Fluorescence for Security Applications

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Product

Resources

About

Multiple fluorescence-temperature feedback in Y₇O₆F₉:Er/Yb crystal-embedded polyacrylonitrile fibers