Precisely Regulating the Electronic Structure Enables Highly Soluble, Luminescent, and Short‐Delayed Aluminum(III)‐TADF Complex for High‐Performance Solution‐Processed Green Hyperfluorescent OLEDs

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 16, 2025

Abstract Ubiquitous metal complexes with superior thermally activated delayed fluorescence (TADF) properties have emerged as promising candidates for light‐emitting materials due to their earth‐abundant nature and tunable optoelectronic characteristics. However, complexation often results in unfavorable solubility issues, which limit application solution‐processed OLEDs. Moreover, achieving a short‐delayed lifetime (τ d ) is essential further enhancing device performance small efficiency roll‐off. In this work, highly soluble luminescent aluminum(III) complex exhibiting exceptional TADF characteristics presented through precise regulation of electronic structures. This demonstrates high common organic solvents while maintaining excellent photofunctional properties, such PLQY values approaching unity, reduced aggregation‐caused quenching (ACQ), radiative decay rate constant ( k r exceeding 10 7 s −1 , impressive reverse intersystem crossing RISC over 6 τ below 1 µs. Consequently, novel used sensitizer achieves an external quantum 20%, full width at half maximum 52 nm, CIE coordinates (0.31, 0.64) hyperfluorescent

Язык: Английский

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Applications of Luminescent Cyclometalated Metal Complexes as Sensors and Switches

Synlett, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Abstract Cyclometalated complexes, including those with pincer ligands and other chelating frameworks, such as porphyrin rings polyenes, have garnered significant attention due to their diverse applications in ion analyte detection across synthetic chemistry, environmental monitoring, medicine, electronics. These complexes exhibit fascinating chromic behaviors, mechanochromism, chemochromism, vapochromism, which are particularly useful sensing applications. Of particular interest photophysical properties, especially involving lanthanides, offer unique luminescent optical characteristics. Metals nickel (Ni), palladium (Pd), ruthenium (Ru), gold (Au), rhodium (Rh) been extensively studied order understand photochemical activity explore potential light-emitting devices, photo-induced electron transfer, technologies. Their vapochromic mechanochromic properties make them highly attractive for sensing, while photoluminescent capabilities enhance utility optoelectronic devices practical This review provides a comprehensive overview of applications, gas, cation, anion sensing. The discussion also highlights the need incorporate specific examples that demonstrate suitability these targeted tasks, further emphasizing promise advancing sensor device 1 Introduction 2 Strategies 3 Applications 4 Other Miscellaneous Examples 5 Drawbacks Limitations 6 Conclusion Perspectives 7 List Abbreviations Definitions

Язык: Английский

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Organic Ionic Host–Guest Phosphor with Dual-Confined Nonradiation for Constructing Ultrahigh-Temperature X-ray Scintillator

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Scintillators with X-ray-excitable luminescence have attracted great attention in the fields of medical radiography, nondestructive inspection, and high-energy physics. However, thermal quenching significantly reduces radioluminescence efficiency, particularly for those phosphorescent scintillators promising radiation-induced triplet exciton utilization, ultimately limiting their applications high-temperature scenarios. Herein, we develop ultrahigh-temperature based on organic ionic host–guest phosphorescence systems unprecedented thermal-stable emissions up to 673 K. The guest phosphor features spin-vibronic coupling-assisted intersystem crossing, effectively transforming thermally activated delayed fluorescence overcoming inactivation excitons. Meanwhile, rigid host robust electrostatic interactions minimize both intrinsic extrinsic nonradiations excitons, so-called dual-confined nonradiation. These two mechanisms work synergistically, contributing highly efficient exciton-based a room-temperature efficiency 38.7% ultrahigh-temperature-resistant dual emissions. Such an innovative scintillator achieves impressively low X-ray detection limit 71.5 nGy s–1 remarkably bright photoluminescence (efficiency 80.4% at 483 K), enabling imaging.

Язык: Английский

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Blue-Light-Excitable Yellow Emissive One-Dimensional Hybrid Copper(I) Iodide for White-Light-Emitting Diode and Methanol Sensing Application

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 4, 2025

Copper(I) halides are promising candidates for advanced optoelectronics, such as white-light-emitting diodes (WLEDs), scintillators, and photodetectors. Designing synthesizing low-dimensional hybrid copper with blue-light excitation remains an enormous challenge. Herein, we have prepared two one-dimensional (1D) Cu(I)-based metal iodides, namely, (C6H7N)CuI (C6H8N)CuI2 single crystals, by deliberately adjusting the ratio of reactants 4-methylpyridine (4-MePy) CuI. crystals nonluminous, while exhibit unusual yellow emission a broad band in range 260-500 nm Furthermore, prototypical WLED is fabricated combining commercial 430 blue chip phosphor, which exhibits correlated color temperature (CCT) 5645 K CIE coordinate (0.329, 0.334), thus demonstrating potential application white lighting. Remarkably, emit red fluorescence upon adsorption methanol but fail all other alcohols. Notably, initial luminescence can be recovered volatilization from achieving reversible photoluminescence switching. This work not only presents important reference blue-light-excitable iodide phosphor WLEDs also provides intriguing sensor detection methanol.

Язык: Английский

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Chemistry of 2-(2′-Aminophenyl)benzothiazole Derivatives: Syntheses, Photophysical Properties and Applications

Molecules, Год журнала: 2025, Номер 30(8), С. 1659 - 1659

Опубликована: Апрель 8, 2025

2-(2′-aminophenyl)benzothiazole is a readily tunable fluorescent core with widespread applications in coordination chemistry, sensing, light-emitting processes, medicinal and catalysis. This review provides an overview of the synthetic methodologies to access its organic derivatives, including various phosphorous silane pincer ligands. The luminescent properties will be discussed, special focus on ESIPT AIE processes. transition metals lanthanides presented, as well their influence biological properties. derivatives have also been employed sensors for range cations anions due binding modes, bioimaging purposes. Recently, first application photocatalysis has emerged, showing one many openings these building blocks future.

Язык: Английский

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Short-Range Coulomb Interaction Is a Key to Switch the Utilization of Higher Triplet Excitons in Multiresonance Thermally Activated Delayed Fluorescence Doped Film

The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер 15(46), С. 11562 - 11568

Опубликована: Ноя. 11, 2024

Multiresonance thermally activated delayed fluorescence (MR-TADF) materials have attracted widespread attention due to ultrahigh definition display standards. However, many MR-TADF lack TADF properties in both the solution and solid states. Interestingly, characteristics appear once these compounds are doped a suitable host film, but precise mechanism involved host-guest interaction remains uncertain. Herein, we systematically investigated role of interactions employing films (

Язык: Английский

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Switchable Fluorescence of a Mechanical Stimulus-Responsive Au-P-S Complex

Molecules, Год журнала: 2024, Номер 29(23), С. 5736 - 5736

Опубликована: Дек. 5, 2024

The reaction of [(3-bdppmapy)(AuCl)

Язык: Английский

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