Molecular substrates for the construction of afterglow imaging probes in disease diagnosis and treatment

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(14), P. 4549 - 4566

Published: Jan. 1, 2023

This tutorial review introduces recent advances in molecular afterglow imaging using organic materials with a focus on substrates, mechanisms, design principles of probes, and their biomedical applications.

Language: Английский

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Multicolor Afterglow Carbon Dots: Luminescence Regulation, Preparation, and Application

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 6, 2024

Abstract Afterglow materials have attracted much attention owing to their long luminescence lifetimes, large Stokes shifts, and emission without real‐time excitation. Compared with traditional organic afterglow materials, carbon dots (CDs), as a new material, superior properties such easy preparation, low toxicity, cost. The color of CDs can be regulated by external factors excitation wavelength, temperature, time, which is highly significant for expanding the diversified applications make them available biotechnology information applications. This review summarizes research progress multicolor in recent years, including regulation strategies, preparation methods, First, are classified into three strategies: room temperature phosphorescence (RTP), thermally activated delayed fluorescence converted RTP, based on Förster resonance energy transfer, strategies regulating analyzed. Second, methods achieving summarized both matrix‐free matrix‐confined aspects. Then, anticounterfeiting encryption, sensing bioimaging introduced detail. Finally, future challenges opportunities prospected provide ideas controlled design wide application.

Language: Английский

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Near‐Infrared Luminescent Materials Incorporating Rare Earth/Transition Metal Ions: From Materials to Applications

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)

Published: May 11, 2024

Abstract The spotlight has shifted to near‐infrared (NIR) luminescent materials emitting beyond 1000 nm, with growing interest due their unique characteristics. ability of NIR‐II emission (1000–1700 nm) penetrate deeply and transmit independently positions these NIR for applications in optical‐communication devices, bioimaging, photodetectors. combination rare earth metals/transition metals a variety matrix provides new platform creating chemical physical properties science device applications. In this review, the recent advancements activated by transition metal ions are summarized role spanning sensing, optoelectronics is illustrated. It started various synthesis techniques explored how earths/transition can be skillfully incorporated into matrixes, thereby endowing them discussion strategies enhancing excitation absorption efficiency, spotlighting innovations like dye sensitization surface plasmon resonance effects then extended. Subsequently, significant focus placed on functionalization Finally, comprehensive analysis challenges proposed earth/transition ion‐doped materials, summarizing insights each section provided.

Language: Английский

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Multiple optical thermometry and dynamic anti-counterfeiting based on multicolor luminescence of SrY2O4:Bi3+,Er3+ phosphor

Ceramics International, Journal Year: 2024, Volume and Issue: 50(9), P. 15417 - 15425

Published: Feb. 2, 2024

Language: Английский

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Edible Long‐Afterglow Photoluminescent Materials for Bioimaging

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)

Published: May 13, 2024

Abstract Confining luminophores into modified hydrophilic matrices or polymers is a straightforward and widely used approach for afterglow bioimaging. However, the quantum yield lifetime of related material remain unsatisfactory, severely limiting using effect especially deep‐tissue time‐resolved imaging. This fact largely stems from dilemma between biocompatibility quenching water environment. Herein an in situ metathesis promoted doping strategy presented, namely, mixing ≈10 −3 weight ratio organic‐emitter multicarboxylates with inorganic salt reactants, followed by reactions to prepare series but water‐insoluble organic–inorganic materials. leads formation edible long‐afterglow photoluminescent materials superior excellent bioimaging effect. The phosphorescence can reach dozens percent (the highest case: 66.24%), together lasting coupes seconds. Specifically, barium meal formed coronene emitter BaSO 4 matrix applied animal experiments gavage, bright stomach imaging observed instruments mobile phone after ceasing photoexcitation deep tissue penetration. allows flexible dosage during bioimaging, facilitating development real‐time probing theranostic technology.

Language: Английский

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Pushing Trap‐Controlled Persistent Luminescence Materials toward Multi‐Responsive Smart Platforms: Recent Advances, Mechanism, and Frontier Applications

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: July 14, 2024

Abstract Smart stimuli‐responsive persistent luminescence materials, combining the various advantages and frontier applications prospects, have gained booming progress in recent years. The trap‐controlled property energy storage capability to respond external multi‐stimulations through diverse pathways make them attractive emerging multi‐responsive smart platforms. This review aims at advances materials for advanced multi‐stimuli‐responsive design principles, mechanisms, representative stimulations, i.e., thermo‐, photo‐, mechano‐, X‐rays responsiveness, are comprehensively summarized. Various hybrid systems containing highlighted. Specifically, temperature dependent trapping de‐trapping performance is discussed, from extreme‐low ultra‐high conditions. Emerging future perspectives briefly presented. It hoped that this would provide new insights guidelines rational manipulation of

Language: Английский

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Defect-induced new persistent cyan-emitting rare-earth-free phosphors for dynamic anti-counterfeiting and plant-growth LED applications

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The mixture of persistent blue and deep red-emitting systems is suitable for currency QR code anti-counterfeiting due to the emission as plant growth lighting their overlapping with pigments’ absorption.

Language: Английский

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Calcination temperature tuning of RTP and TADF with wide range of emission color from carbon dots confined in Al2O3

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145597 - 145597

Published: Aug. 23, 2023

Language: Английский

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Modulating Smart Mechanoluminescent Phosphors for Multistimuli Responsive Optical Wood

Advanced Science, Journal Year: 2023, Volume and Issue: 11(1)

Published: Nov. 8, 2023

Abstract Mechanoluminescence is a smart light‐emitting phenomenon in which applied mechanical energy directly converted into photon emissions. In particular, mechanoluminescent materials have shown considerable potential for applications the fields of and sensing. This study thoroughly investigates mechanoluminescence long afterglow properties singly doped codoped Sr 2 MgSi O 7 (SMSO) with varying concentrations Eu 2+ Dy 3+ ions. Subsequently, comprehensive analysis its multimode luminescence properties, including photoluminescence, mechanoluminescence, afterglow, X‐ray‐induced luminescence, conducted. addition, density states mapping acquired through first‐principles calculations, confirming that enhanced SMSO primarily stem from deep trap introduced by . contrast to traditional mixing Polydimethylsiloxane, this study, powders are incorporated optically transparent wood produce multiresponse X‐ray‐excited luminescence. structure achieved pretreating natural wood, eliminating lignin, subsequently modifying overall modification using various phosphors epoxy resin composites. After drying, multifunctional composite diverse obtained. Owing environmental friendliness, sustainability, self‐power, cost‐effectiveness, anticipated find extensive construction energy‐efficient displays.

Language: Английский

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High-Pressure Near-Infrared Luminescence Studies of Fe³⁺-Activated LiGaO₂

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(31), P. 12434 - 12444

Published: July 27, 2023

A 0.25% iron (Fe3+)-doped LiGaO2 phosphor was synthesized by a high-temperature solid-state reaction method. The characterized utilizing X-ray diffraction (XRD), scanning electron microscopy (SEM), high-pressure photoluminescence, and photoluminescence decay measurement techniques using diamond anvil cells (DACs). powder analysis shows that the is β polymorph of with an orthorhombic crystallographic structure at room temperature. SEM result also confirms presence well-dispersed micro-rod-like structures throughout sample. studies in near-infrared (NIR) range were performed ambient, low-temperature, conditions. exhibits band around 746 nm related to 4T1 → 6A1 transition 28% quantum efficiency ambient conditions, which shifts toward longer wavelengths increase pressure. excitation spectra Fe3+ are very well fitted Tanabe-Sugano crystal-field theory. luminescence decays millisecond lifetime. application transforms into trigonal α pressure about 3 GPa. Further quenches due amorphization process material. prepared mechanoluminescence properties NIR spectral region.

Language: Английский

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