Rare-Earth-Doped Waveguide Amplifiers and Lasers

Pollnau, Markus

doi:10.1016/bs.hpcre.2017.04.001

Cited by 7 publications

(2 citation statements)

References 124 publications

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“…In recent decades, luminescent lanthanide(III)-based compounds have become essential for an increasingly growing number of materials and technologies including alphanumerical displays, lighting devices, security inks, lasers, telecommunication systems, solar-energy conversion, as well as for a variety of biological applications including biosensing, , detection of nucleic acids, , immunoassays, , nanothermometry, optical imaging, − barcoding, as well as cancer diagnosis. , The design of sufficiently luminescent lanthanide(III)-based compounds is a key aspect to take advantage of these applications and requires lanthanide(III) ions (Ln 3+ ) to be surrounded with appropriate chromophores/antennae to overcome the low molar absorption coefficients of free Ln 3+ due to the forbidden nature of most of their f–f transitions. , The sensitization efficiency of a particular chromophore/antenna varies depending on the nature of the Ln 3+ . The number of different antennae capable of sensitizing the entire series of Ln 3+ with a satisfactory efficiency remains limited, and only a few examples have been reported to date. − Important efforts are being devoted to understand the mechanism of Ln 3+ sensitization, including different theoretical approaches. , However, because of the complexity of the energy-transfer mechanisms, , not all parameters can be taken into account in the theoretical methodology, thus inducing erroneous conclusions and limiting the accuracy of the prediction of luminescence properties for a particular structure.…”

Section: Introductionmentioning

confidence: 99%

One Approach for Two: Toward the Creation of Near-Infrared Imaging Agents and Rapid Screening of Lanthanide(III) Ion Sensitizers Using Polystyrene Nanobeads

Martinić

Eliseeva

Collet

et al. 2019

ACS Appl. Bio Mater.

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The unique luminescence properties of lanthanide(III) ions (Ln3+) in the near-infrared (NIR) range are attracting major attention in view of their exciting applications in the fields of technology, telecommunications, biology, and medicine. One of the main strategies to design luminescent Ln3+-based compounds relies on their sensitization through appropriate chromophoric ligands. The choice of the chromophores depends on the nature of Ln3+ and, as of today, still partially requires experimental trials, in particular, for the creation of luminescent compounds incorporating NIR-emitting Ln3+. The synthesis of organic ligands bearing suitable coordinating and chromophoric units is time- and effort-consuming. We have established a strategy to encapsulate a large number of Yb3+ trifluoromethanesulfonates and 1,n-dihydroxyanthraquinone chromophores in NH2-functionalized 100 nm polystyrene (PS) beads through a rapid swelling process, leading to AQ1,nOH-Yb@PS/NH2 (n = 4, 8). We have shown that 1,n-dihydroxyanthraquinones can act as antennae and sensitize the characteristic Yb3+ emission in the NIR upon excitation at 465 nm. To validate the bioapplicability of these luminescent beads, polyethylene glycol (PEG)-coated beads have been prepared (AQ1,nOH-Yb@PS/PEG) and demonstrated to be noncytotoxic for HeLa cells up to 500 μg/mL. Confocal microscopy experiments have shown that AQ1,nOH-Yb@PS/PEG is taken up by HeLa cells, whereas epifluorescence microscopy confirmed the possibility of detecting the NIR Yb3+ emission in living cells. The developed strategy has a high potential and can be further applied for the rapid screening of sensitizers for different NIR-emitting Ln3+ ions and for the creation of smart NIR-emitting imaging agents.

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Section: Introductionmentioning

confidence: 99%

One Approach for Two: Toward the Creation of Near-Infrared Imaging Agents and Rapid Screening of Lanthanide(III) Ion Sensitizers Using Polystyrene Nanobeads

Martinić

Eliseeva

Collet

et al. 2019

ACS Appl. Bio Mater.

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“…Nowadays lanthanides (Ln) are widely used in many innovative industrial processes: for the preparation of constant magnets, catalysts, powerful lasers, magnetic alloys, and also in machine engineering, radioelectronics, chemical industry, nuclear power, cosmetology, and medicine. [1][2][3][4][5][6] That is why the wastes of these metals cause a danger of natural waters contamination, which can lead to a potential risk for the whole environment.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration of Lutetium from Aqueous Solution by Transcarpathian Clinoptilolite

Stechynska

Vasylechko

Gryshchouk

et al. 2020

ACSi

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Sorptive properties of Transcarpathian clinoptilolite towards trace amounts of Lu(III) were studied under dynamic conditions. It is shown that this lanthanide is sorbed from the weakly alkaline solution (рН 10) most efficiently. The sorption capacity of clinoptilolite under the optimal conditions is equal to 9.37 mg g-1. The distribution of various species of Lu(III) in aqueous solutions at various total concentration of the lanthanide in the pH range from 4 to 13 was calculated. The best desorbent of Lu(III) is the 1 mol L-1 solution of NaCl, preacidified with the solution of HCl to a value of рН 4.0. This desorbent enables 95-100% of Lu(ІІІ) removal. The method of Lu(III) trace amounts preconcentration from aqueous samples in a solid phase extraction mode with the further determination of this rare earth element via the spectrophotometric method using arsenazo III was developed. The linearity of the proposed method was observed in the range of 1-12 ng mL-1 with the detection limit of 0.4 ng mL-1 .

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Biosorption-a green method for the preconcentration of rare earth elements (REEs) from waste solutions: A review

Gupta

Ramteke

et al. 2019

Journal of Molecular Liquids

139

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Rare-Earth-Doped Waveguide Amplifiers and Lasers

Cited by 7 publications

References 124 publications

One Approach for Two: Toward the Creation of Near-Infrared Imaging Agents and Rapid Screening of Lanthanide(III) Ion Sensitizers Using Polystyrene Nanobeads

One Approach for Two: Toward the Creation of Near-Infrared Imaging Agents and Rapid Screening of Lanthanide(III) Ion Sensitizers Using Polystyrene Nanobeads

Preconcentration of Lutetium from Aqueous Solution by Transcarpathian Clinoptilolite

Biosorption-a green method for the preconcentration of rare earth elements (REEs) from waste solutions: A review

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