Achieving a Record Photoluminescence Quantum Yield in Green Light‐Emitting Carbon‐Centered Radicals with Nanosecond Emission Lifetimes DOI Open Access
Man Li, Xin Li, Ying‐Feng Han

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Organic luminescent radicals possess considerable potential for applications in organic light‐emitting diodes (OLEDs)‐based visible light communication owing to their intrinsic advantages of nanosecond emission lifetimes and spin‐allowed radiative transitions. However, the inherently narrow energy bandgap multiple nonradiative channels make it difficult achieve efficient green blue light‐emitting, which is not conducive applying diverse fields. In this study, a series carbon‐centered derived from N‐heterocyclic carbenes are designed synthesized, some exhibiting hybrid local charge‐transfer (HLCT) states that resulting emission. The results photophysical characterizations theoretical calculations demonstrate luminescence efficiency closely related states. This relationship inhibits while simultaneously opening HLCT but those with locally excited Intriguingly, high photoluminescence quantum yield value up 70.1% at 534 nm observed, highest among reported date. Based on exceptional result, an OLED device fabricated achieved external 8.8%. These its application electroluminescent devices.

Language: Английский

Cyano modified triphenylmethyl radical skeletons: higher stability and efficiency DOI

Kuo Lv,

Minzhe Zhang,

Xin Xia

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(36), P. 4846 - 4849

Published: Jan. 1, 2024

We developed two novel stable luminescent radical skeletons, BnBTM and bisBnTM, demonstrating lower frontier orbital energy levels suppressed nonradiative transition processes than the previously reported skeletons.

Language: Английский

Citations

6
Radiochromic semiconductive MOFs with high sensitivity and fast photochromic responses for dual-mode X-ray direct detection DOI

Xu-Ying Yu,

Jia-Rong Mi,

Qiu-Pei Qin

et al.

Inorganic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(11), P. 3316 - 3322

Published: Jan. 1, 2024

A radiochromic semiconductor detector for dual-mode direct X-ray detection, showing rapid color changes and high sensitivity upon exposure, is reported. This allows quickly capturing object information through visual inspection serves as an alternative means of detection.

Language: Английский

Citations

6
One-Dimensional Red Light–Emissive Organic Manganese(II) Halides as X-Ray Scintillators DOI
Yu Fang, Huiru Zhang,

Wenwen Gao

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 19, 2024

Although metal halide-based X-ray scintillators have obtained significant development with adjustable radioluminescent spectral range, the red light-emitting scintillator has been sparsely reported and remains a great challenge until now. To remedy this research blank, we investigated scintillating property of light-emissive one-dimensional (1D) organic manganese halide (MBIZ)(MnCl

Language: Английский

Citations

5
Temperature-Adaptive Organic Scintillators for X-ray Radiography DOI

Mengyang Dong,

Ziyang Wang,

Zhen‐Yi Lin

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 16, 2024

Organic phosphorescence or thermally activated delayed fluorescence (TADF) scintillators, while effective in utilizing triplet excitons, are sensitive to temperature changes, which can impact radioluminescence performance. In this study, we have developed a type of temperature-adaptive organic scintillator with and TADF dual emission. These scintillators automatically switch modes enabling efficient from 77 400 K. The highest photoluminescence quantum yield light 83.2% 78,229 ± 562 photons MeV

Language: Английский

Citations

5
Probing Energy‐Funneling Kinetics in Nanocrystal Sublattices for Superior X‐Ray Imaging DOI

Qinxia Wu,

Xinqi Xu, Xiaokun Li

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(25)

Published: April 18, 2024

Abstract Long‐lasting radioluminescence scintillators have recently attracted substantial attention from both research and industrial communities, primarily due to their distinctive capabilities of converting storing X‐ray energy. However, determination energy‐conversion kinetics in these nanocrystals remains unexplored. Here we present a strategy probe unveil energy‐funneling NaLuF 4 :Mn 2+ /Gd 3+ nanocrystal sublattices through Gd ‐driven microenvironment engineering Mn ‐mediated profiling. Our photophysical studies reveal effective control demonstrate the tunability electron trap depth ranging 0.66 0.96 eV, with corresponding density varying between 2.38×10 5 1.34×10 7 cm −3 . This enables controlled release captured electrons over durations spanning seconds 30 days. It allows tailorable emission wavelength within range 520–580 nm fine‐tuning thermally‐stimulated temperature 313–403 K. We further utilize fabricate high‐density, large‐area scintillation screens that exhibit 6‐fold improvement sensitivity, 22 lp/mm high‐resolution imaging, 30‐day‐long optical memory. high‐contrast imaging injured mice fast readout. These findings offer new insights into correlation dynamics kinetics, thereby contributing advancement high‐energy nanophotonic applications.

Language: Английский

Citations

3
Synthesis and Characterization of Polychlorinated Trityl Radical Substituted Phosphines DOI

Nianhe Sun,

Bingxin Yuan, Zheng Duan

et al.

Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

We synthesized a series of polychlorinated trityl radical substituted phenylphosphines. Through UV–vis photoluminescence (PL) spectroscopy and cyclic voltammetry, we explored the influence chemical modifications (oxidation/reduction, coordination, methylation) phosphorus center(s) on tuning optical redox properties tris(2,4,6-trichlorophenyl)methyl (TTM) framework. Those compounds hold promise for applications in coordination chemistry luminescent materials, particularly systems where both phosphine-based functionalities can be leveraged innovative properties.

Language: Английский

Citations

0
Structure and property evolution of atomically precise palladium clusters DOI
Changqing Meng,

Wan‐Yu Cheng,

Hao Yan

et al.

Rare Metals, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 25, 2025

Language: Английский

Citations

0
Pioneering radiation dosimetry and photothermal conversion in a photochromic and radiochromic thorium cluster DOI
Jingqi Ma, Junpu Yang, Huangjie Lu

et al.

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 7, 2025

Language: Английский

Citations

0
Dynamic excitons in organic light-emitting systems DOI
Katsuaki Suzuki, Eri Sakuda, Yosuke Tani

et al.

The Journal of Chemical Physics, Journal Year: 2025, Volume and Issue: 162(6)

Published: Feb. 10, 2025

Light-emitting molecules have been extensively studied due to their potential and wide variety of applications from optoelectronic devices biomedical applications. To fully understand rationalize the light-emitting process for innovation next-generation applications, it is vital reveal dynamic behavior excitons, where excited electronic states (locally excited, charge transfer, separated states), spin multiplicity, motion atomic nucleus are interacting each other. Here, we will show our recent progress on systems developed under “Dynamic Exciton” project in Japan.

Language: Английский

Citations

0
Hot Exciton‐Based Plastic Scintillator Engineered for Efficient Fast Neutron Detection and Imaging DOI Open Access

Song He,

Pengying Wan,

Hanchen Li

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Abstract Scintillators play a crucial role in the fields of radiation detection and imaging, but it is formidable challenge to meet demands for large size, high light yield, fast response simultaneously. To tackle this challenge, work interprets key polymer matrix customizing overall performance organic scintillator from underlying logic. Owing this, plastic scintillators Tetra(p‐bromophenyl)ethene@Poly(vinyltoluene) (TPE‐4Br@PVT), are successfully prepared using an amorphous conjugated PVT situ polymerization process. This features ultra‐large size (≈191 cm 3 ), ultrafast decay time (1.66/5.26 ns), decent yield (14 443 photons·MeV −1 ). It not only achieves X‐ray imaging resolution 13.9 lp·mm− 1 (lp: line pairs) also record‐breaking neutron 2.03 , showcasing great potential applications.

Language: Английский

Citations

0