Rational Design of Ratiometric Luminescence Thermometry Based on Thermally Coupled Levels for Bioapplications

Laser & Photonics Review, Год журнала: 2020, Номер 15(1)

Опубликована: Дек. 6, 2020

Abstract Noninvasive lanthanide‐doped optical thermometers based on fluorescent intensity ratio (FIR) technique have emerged as promising noncontact tools for detecting the inaccessible objects at different scales. Currently, theoretical and experimental investigations of various influential factors thermal performances luminescence become one hotspots to develop highly sensitive thermometers. On other hand, near‐infrared (NIR) light‐responsive nanothermometers with deep‐tissue penetration been widely applied subcutaneous intracellular thermometry, which could be integrated heating imaging functions construct all‐in‐one thermometer‐heater platforms cancer diagnosis therapy. In this review, recent advances in thermometry thermally coupled levels (TCLs) are elaborately introduced from fundamental aspects possible biomedical applications, perspective outlook emerging challenges FIR science.

Язык: Английский

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A Theoretical Framework for Ratiometric Single Ion Luminescent Thermometers—Thermodynamic and Kinetic Guidelines for Optimized Performance

Advanced Theory and Simulations, Год журнала: 2020, Номер 3(12)

Опубликована: Окт. 12, 2020

Abstract Luminescence (nano)thermometry is an increasingly important field for remote temperature sensing with high spatial resolution. Most typically, ratiometric of the luminescence emission intensities two thermally coupled emissive states based on a Boltzmann equilibrium used to detect local temperature. Dependent range and preferred spectral window, various choices potential candidates appear possible. Despite extensive experimental research in field, universal theory covering basics thermometry virtually nonexistent. In this manuscript, general theoretical framework single ion luminescent thermometers presented that offers simple, user‐friendly guidelines both choice appropriate emitter respective embedding host material optimum sensing. The results show performance (thermal response sensitivity) around T 0 realized energy gap ∆ E 21 between levels 2 k B 3.41 . Analysis temperature‐dependent excited state kinetics shows lattices which can be bridged by one or phonons are over hosts higher order phonon processes required. Such relevant fundamental understanding but also targeted design novel superior (nano)thermometers.

Язык: Английский

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Controlling upconversion in emerging multilayer core–shell nanostructures: from fundamentals to frontier applications

Chemical Society Reviews, Год журнала: 2022, Номер 51(5), С. 1729 - 1765

Опубликована: Янв. 1, 2022

Lanthanide-based upconversion nanomaterials have recently attracted considerable attention in both fundamental research and various frontier applications owing to their excellent photon performance favourable physicochemical properties. In particular, the emergence of multi-layer core-shell (MLCS) nanostructures offers a versatile powerful tool realize well-defined matrix compositions spatial distributions dopant on nanometer length scale. contrast conventional commonly investigated nanoparticles, rational design MLCS allows us deliberately introduce more functional properties into an system, thus providing unprecedented opportunities for precise manipulation energy transfer channels, dynamic control processes, fine tuning switchable emission colours new integration at single-particle level. this review, we present summary discussion key aspects recent progress lanthanide-based including lifetime, multicolour output lanthanide ionic interactions nanoscale. Benefitting from multifunctional luminescence properties, exhibit great potential diversities such as three-dimensional display, laser, optical memory, anti-counterfeiting, thermometry, bioimaging, therapy. The outlook challenges well perspectives nanostructure materials are also provided. This review would be greatly helpful exploring structural designs further manipulate phenomenon expand application boundaries.

Язык: Английский

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Spotlight on Luminescence Thermometry: Basics, Challenges, and Cutting‐Edge Applications

Advanced Materials, Год журнала: 2023, Номер 35(36)

Опубликована: Июль 21, 2023

Abstract Luminescence (nano)thermometry is a remote sensing technique that relies on the temperature dependency of luminescence features (e.g., bandshape, peak energy or intensity, and excited state lifetimes risetimes) phosphor to measure temperature. This provides precise thermal readouts with superior spatial resolution in short acquisition times. Although thermometry just starting become more mature subject, it exhibits enormous potential several areas, e.g., optoelectronics, photonics, micro‐ nanofluidics, nanomedicine. work reviews latest trends field, including establishment comprehensive theoretical background standardized practices. The reliability, repeatability, reproducibility are also discussed, along use multiparametric analysis artificial‐intelligence algorithms enhance readouts. In addition, examples provided underscore challenges faces, alongside need for continuous search design new materials, experimental techniques, procedures improve competitiveness, accessibility, popularity technology

Язык: Английский

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Luminescence thermometry with transition metal ions. A review

Coordination Chemistry Reviews, Год журнала: 2022, Номер 469, С. 214671 - 214671

Опубликована: Июнь 21, 2022

Transition metal (TM) ion activated phosphors are increasingly being used as probes for luminescence thermometry. Their is characterized by strong absorption and emission bands that span the visible near-infrared spectral ranges highly susceptible to temperature variations. Due latter characteristic, sensitive reliable remote measurements can be performed observing temperature-induced changes in TM intensities, bandwidths bandshifts, excited state lifetimes, well dependences of intensity ratios between various single or double phosphors. This review provides a systematic analysis performances luminescent thermometers based on different ions discusses relations among spectroscopic properties, characteristics host material structure, thermometric performance. Particular attention given engineering energy transfer other dopant obtain thermometers. Finally, several typical application examples from recent literature highlighted.

Язык: Английский

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Luminescent lanthanide nanocomposites in thermometry: Chemistry of dopant ions and host matrices

Coordination Chemistry Reviews, Год журнала: 2021, Номер 444, С. 214040 - 214040

Опубликована: Июнь 3, 2021

Язык: Английский

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One ion to catch them all: Targeted high-precision Boltzmann thermometry over a wide temperature range with Gd3+

Light Science & Applications, Год журнала: 2021, Номер 10(1)

Опубликована: Ноя. 22, 2021

Abstract Ratiometric luminescence thermometry with trivalent lanthanide ions and their 4f n energy levels is an emerging technique for non-invasive remote temperature sensing high spatial temporal resolution. Conventional ratiometric often relies on thermal coupling between two closely lying governed by Boltzmann’s law. Despite its simplicity, Boltzmann excited allows precise sensing, but only within a limited range. While low temperatures slow down the nonradiative transitions required to generate measurable population in higher excitation level, that are too favour equalized populations of levels, at expense relative sensitivity. In this work, we extend concept more than provide quantitative guidelines link choice gaps multiple states performance different windows. By approach, it possible retain sensitivity precision measurement over wide range same system. We demonstrate using YAl 3 (BO ) 4 (YAB):Pr 3+ , Gd 6 P J crystal field spin-orbit split UV avoid black body background even highest temperatures. This phosphor easily excitable inexpensive powerful blue LEDs 450 nm. Zero-background realized blue-to-UV transfer upconversion Pr −Gd couple upon visible method us cover window 30 800 K.

Язык: Английский

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Efficient luminescence lifetime thermometry with enhanced Mn4+-activated BaLaCa1−xMgxSbO6 red phosphors

Chemical Engineering Journal, Год журнала: 2021, Номер 430, С. 132923 - 132923

Опубликована: Окт. 14, 2021

Язык: Английский

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Luminescence based temperature bio-imaging: Status, challenges, and perspectives

Applied Physics Reviews, Год журнала: 2021, Номер 8(1)

Опубликована: Март 1, 2021

The only way to get thermal images of living organisms without perturbing them is use luminescent probes with temperature-dependent spectral properties. acquisition such becomes essential distinguish various states cells, monitor thermogenesis, study cellular activity, and control hyperthermia therapy. Current efforts are focused on the development optimization reporters as small molecules, proteins, quantum dots, lanthanide-doped nanoparticles. However, much less attention devoted methods technologies that required image temperature distribution at both in vitro or vivo levels. Indeed, rare examples can be found scientific literature showing materials capable providing reliable 2D organisms. In this review article, luminescence thermometry presented alongside new possibilities directions should followed achieve level simplicity reliability ensure their future implementation clinical level. This will inspire specialists chemistry, physics, biology, medicine, engineering collaborate scientists jointly develop novel more accurate enable mapping simplified technical means.

Язык: Английский

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Boltzmann Thermometry in Cr³⁺‐Doped Ga₂O₃ Polymorphs: The Structure Matters!

Advanced Optical Materials, Год журнала: 2021, Номер 9(9)

Опубликована: Фев. 24, 2021

Abstract The performance of luminescent Cr 3+ ‐doped thermometers is strongly influenced by the locally surrounding ligand field. A universal relationship between thermometric and structural/chemical parameters highly desirable to drive development effective ‐based thermal sensors avoiding trial‐and‐error procedures. In this view, as prototypes, electronic structure α‐Ga 2 O 3 β‐Ga polymorphs are compared. Combining a detailed theoretical spectroscopic investigation, configuration crystal field (CF) acting on in described for first time compared with :Cr polymorph discuss behavior. linear 4 T – E energy gap (directly linked relative sensitivity) CF strength Dq demonstrated wide variety materials. This trend can be considered step set guiding principles design Boltzmann thermometers. addition, proof concept, particles thermometer used measure operando variations Pt catalysts support during catalytic reaction C H hydrogenation contactless reliable mode, demonstrating their real potentials.

Язык: Английский

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