Engineered Energy Transfer in Room Temperature Phosphorescent Materials for Time‐Resolved Dual‐Mode Encryption DOI Open Access

Miao Ren,

Shuai Zhang,

Jie Wu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 12, 2024

Abstract Room temperature phosphorescence (RTP) materials are of significant attentions due to their unique optical properties and potential applications in anti‐counterfeiting information security. However, single spatial resolution decryption methods fail meet high‐level security demands. A novel dual‐mode encryption strategy based on self‐trapped exciton (STE) fluorescence is proposed. By introducing ns 2 metal ions into the zero‐dimensional organic–inorganic hybrid halide (Ph 3 S) SnCl 6 , energy transfer pathways from S 1 T n levels STEs constructed, enabling precise control performance. This material exhibited STE fluorescence‐phosphorescence with different afterglow time, which can be utilized develop high‐performance time‐resolved cryptographic systems. Femtosecond transient absorption experiments indicated that rate significantly affected characteristics long materials. The this systems demonstrated, enhancing through multi‐level providing a new avenue for advanced

Language: Английский

Multifunctional Applications Enabled by Tunable Multi-Emission and Ultra-Broadband VIS-NIR Luminescence via Energy Transfer in Sn²⁺/Mn²⁺-Doped Lead-Free Zn-Based Metal Halides DOI
Yong Yang, B. C. Ke, Chengzhi Yang

et al.

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

Published: Jan. 1, 2025

Metal halides are widely applied in solid-state lighting (SSL), optoelectronic devices, information encryption, and near-infrared (NIR) detection due to their superior photoelectric properties tunable emission. However, single-component phosphors that can be efficiently excited by light-emitting diode (LED) chips cover both the visible (VIS) NIR emission regions still very rare. To address this issue, (TPA)2ZnBr4:Sn2+/Mn2+ (TPA = [(CH3CH2CH2)4N]+) were synthesized using solvent evaporation method. The Sn2+ doping significantly enhances luminescence of (TPA)2ZnBr4, shifts weak blue light efficient emissions red zones. Spectroscopic studies density functional theory (DFT) calculations reveal attributed different levels 3P1-1S0 [SnBr4]2- tetrahedron caused Jahn-Teller distortion. More importantly, energy transfer from Mn2+ enables ultra-broadband VIS-NIR across 400-1000 nm range, with excitation-dependent characteristics. These suggest has great potential as a high-performance, luminescent material for applications general lighting, source, anti-counterfeiting labels.

Language: Английский

Citations

1
Hydrogen bonding evolution and efficient blue light emission in a series of Zn-based organic–inorganic hybrid metal halide crystals DOI
Qi Zhang,

Tianwen Huang,

Zheyuan Liu

et al.

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

Published: Feb. 17, 2025

Language: Английский

Citations

1
Ultralong Afterglow of Zinc(II) Halide Complexes Enabled by Regulating the Arrangements of N‐Methylbenzimidazole Ligands DOI
Guanghui Zhang, Hai‐Ling Wang, Yun‐Lan Li

et al.

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

Published: April 1, 2025

Abstract In this study, a simple and rapid strategy is developed for the gram‐scale synthesis of zinc(II) halide complexes with ultralong afterglow under mild conditions. Crystalline, high‐purity are synthesized using N ‐methylbenzimidazole ( Bz ) common zinc salts (ZnX 2 , X = Cl, Br, I) as cheap industrial raw materials by stirring at room temperature atmospheric pressure. By exploiting steric effect terminal‐coordinated halogen ions to regulate arrangements ligands in structure complexes, namely cis ‐butterfly, trans cross ‐arrangement, completely differentiated stacking modes obtained. Zn(Bz)Cl ‐butterfly‐shaped arrangement has longest room‐temperature phosphorescence (RTP) lifetime (505.01 ms 298 K) long up 1.4 s. This study proposes first time use end group coordination fluorophores within resulting considerably improved RTP afterglow, thus providing new platform large‐scale afterglow.

Language: Английский

Citations

1
Charge Transfer of Acridine Based Hybrid Metal Halide for Light-Emitting Diode DOI

Xin-Ya Zhang,

Pei-Pei Yin,

Shu-Yao Yang

et al.

Published: Jan. 1, 2025

The development of charge transfer materials have been extensively studied in recent years owing to their potential applications the field photodetector, photocatalytic and solid-state lighting. Herein, assembly acridine (AD) organic cations [ZnCl4]2- anions afforded one organic–inorganic hybrid complex [(AD)2(ZnCl4)] (1), which can be facilely synthesized ethanol solution at room temperature for a few minutes. alternately arranged AD cation π-conjugated chains inorganic anion tetrahedrons enable this characteristic. It shows bright green light emission with long lifetime 16.31 ns quantum yield 53%. Theoretical calculations provided detailed energy level, band gap distribution information 1, further certified its behavior. Successful fabrication light-emitting diode (LED) device making perfect candidate lighting material.

Language: Английский

Citations

0
Multicolor Long-Persistent Luminescence with High Phosphorescence Quantum Yield and Long Lifetime in Ultrahigh Elastic Fibers DOI
Xiaoyan Wang, Zheng Zhang, Shuangqiao Yang

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 928 - 937

Published: Feb. 10, 2025

Language: Английский

Citations

0
Lattice and Bandgap Modulation in Metal Halide Perovskites by B‐Site Ions Substitution DOI Open Access

Anshi Chu,

Jun Luo,

Danliang Zhang

et al.

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

Published: Feb. 17, 2025

Abstract Metal halide perovskites have attracted much attention due to their properties and wide applications in optoelectronic devices. B‐site ion substitution, especially heterovalency is proven be one of the practical approaches modulate lattice structure improve physicochemical properties. Here, bandgap modulation all‐inorganic CsPbX 3 are achieved by substituting Pb 2+ with Bi 3+ . A series CsPb 1‐ x Br (0 ≤ 1) microplates values precisely tuned prepared a chemical vapor deposition (CVD) method. The varies from single crystal CsPbBr cubic Cs 2 9 hexagonal structure. Correspondingly, three photoluminescence (PL) bands gradually emerge during substituting: green, blue, broad red‐to‐near‐infrared emission. From micro‐area spectra as function excitation power temperature, combined time‐resolved PL characterization, emission confirmed band‐edge self‐trapped excitons (STEs) density functional theory (DFT) calculations, STE 0.9 0.1 highly related defect contributed bromide vacancy substitution ions. This study paves new way for expanding spectral range perovskite emitters even preparing white light‐emitting

Language: Английский

Citations

0
In Situ Synthesis of Highly Emissive Manganese Halides with Modified Bisphosphonium Cations toward Information Encryption DOI

Xuan Zou,

Xiangyu Han,

Gangji Yi

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Multisite modulation for organic-inorganic hybrid metal halides (OIMHs) plays an important role in the optimization of their photophysical performance. Herein, we proposed organic cation modification strategy on phosphorus sites based 1,2-Bis(diphenylphosphino)ethane (DPPE) by a simple one-pot solvothermal method. Three zero-dimensional (0D) manganese-based OIMHs, two novel MdppeMnCl4·H2O and EdppeMnCl4, as well byproduct [Mn(dppeO2)3][MnCl4] were obtained (Mdppe = methyl-coordinated with DPPE; Edppe ethyl-coordinated dppeO2 is oxidation DPPE). All samples possess four-coordinated [MnCl4]2- polyhedron, while contains another six-coordinated [Mn(dppeO2)3]2+ complex. According to relevant optical measurements, EdppeMnCl4 both show bright green emissions photoluminescence quantum yields 55.66% 80.42%, respectively. By contrast, shows orange emission that confirmed be associated Mn2+ ions temperature-dependent PL spectra. Based good stability solution processability luminescent ink was developed potential application display information encryption fields. The unique this work opens up ways designing developing OIMHs extends prospects halides.

Language: Английский

Citations

0
Charge transfer of acridine based hybrid metal halide for light-emitting diode DOI

Xin-Ya Zhang,

Pei-Pei Yin,

Shu-Yao Yang

et al.

Journal of Solid State Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 125292 - 125292

Published: Feb. 1, 2025

Language: Английский

Citations

0
Efficient energy transfer from organic triplet states to Mn2+ dopants for dynamic tunable multicolor afterglow in 1D hybrid cadmium chloride DOI Creative Commons
Ke Zhang, Zhikai Qi, Xijiang Han

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Tuning Mn 2+ doping in the novel 1D hybrid metal halide enables afterglow color transitions from yellow-green to yellow, orange, and red, resulting efficient energy transfer stable organic triplet states 4 T 1 level of dopants.

Language: Английский

Citations

0
Engineering Solvent‐Coordinated Heterometallic–Organic Frameworks for Wide‐Range Tuning of Ultralong Room Temperature Phosphorescence toward Time‐Resolved Anticounterfeiting DOI Open Access

Juanjuan Xue,

Zhenhong Qi, Dongpeng Yan

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Metal-organic frameworks (MOFs) have been proven promising ultralong room temperature phosphorescence (RTP) materials for anti-counterfeit due to their unique optical properties. However, it remains a major challenge achieve the desired phosphorescent properties limited regulatory methods and indistinct mechanism. Herein, coordination solvent second metal ion co-strategy is firstly proposed prepare seven robust heterometallic-organic (HMOFs) with two configurations: ZnMg/Ca-sol [sol = H2O, dimethylformamide (DMF), dimethylacetamide (DMA), formyldiethylamine (DEF)] ZnSr/Ba-H2O, exhibiting different RTP. The tunable lifetimes within 14.5-195.4 ms are achieved gradually by altering type of alkaline earth metals, solvent, hydrogen-bonding in HMOFs. Significantly, theoretical calculations reveal that promotion spin-orbit coupling heavy metals rigid constraint on skeleton result excellent balance between high quantum yield (ФP) long lifetime, especially ZnSr-H2O (6.8%, 195.4 ms). Depending wide-range tuning RTP great stability, HMOFs successfully applied spatial-time resolved anti-counterfeiting multi-level information encryption. This work may provide new approach designing target while resolving contradiction ФP lifetime.

Language: Английский

Citations

0