Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism DOI
Xiaohui Liu,

Chudong Chen,

Yonghong Xiao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(24), P. 31313 - 31321

Published: June 5, 2024

In this work, two zero-dimensional (0D) metal halide hybrids L2ZnBr4 [1, L = (E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium] and L6Pb3Br12 (2) were prepared, which demonstrated photochromism photoinduced cracking. Upon irradiation at 450 nm, a single crystal-to-single crystal transformation occurred as result of the [2 + 2] photocycloaddition L. Interestingly, compared to complete in 1, only two-thirds monomers could be photodimerized 2 because difference orientation. 1 shows reversible photochromic behavior including rapid response time, few cracks, high conversion rate, good reaction reversibility, while exhibits no significant color change but distinct cracking large local lattice strain induced by inhomogeneous anisotropic deformation. Moreover, results shift photoluminescence 2, attributed variation conjugation π electrons distortion clusters. As proof-of-concept, optical writing is for 1. These findings provide new insights into design stimuli-responsive multifunctional materials.

Language: Английский

Phase Transitions in Dimer/Layered Sb‐Based Hybrid Halide Perovskites: An In‐Depth Analysis of Structural and Spectroscopic Properties DOI Creative Commons
Iulia Corina Ciobotaru, Constantin Claudiu Ciobotaru, Cristina Bartha

et al.

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

Published: Jan. 13, 2025

Abstract When used as the active layers—either a light absorber in photovoltaic devices or an electroluminescent material light‐emitting devices—lead‐free perovskites significantly impact performance of optoelectronic devices. This study focuses on antimony‐based perovskites, which are promising for lighting applications. These types enable formation self‐trapped excitons (STEs) with higher dissociation energy than lead‐based generate lower energy. The (CH 3 NH ) Sb 2 I 9 crystals synthesized using two methods, resulting distinct spatial configurations – dimer and dimer/layered mixtures, each exhibiting unique structural spectroscopic properties, revealed by comprehensive multi‐parametric complementary analyses. Their emissive properties underscore efficiency STE photoluminescence, driven electron–phonon interactions influenced Sb‐Sb distances powder, whether dispersed polymethyl‐methacrylate solution. phase transition from monoclinic to hexagonal (dimer) trigonal (layered) structures enabled tuning optical direct correlation electrical features. photoluminescence behavior STEs, analyzed conjunction Raman spectroscopy, elucidates dynamic process electron‐phonon coupling effects (face‐capping Sb–I octahedra) layered (corner‐sharing crystallographic structures.

Language: Английский

Citations

1
Efficient Tunable White Emission and Blue Light‐Excited Near‐Infrared Emission in Lead‐Free Metal Halide Crystals with Ultra‐High Luminous Efficiency for Multispectral Image Fusion and 3D Image Reconstruction DOI Open Access
Hui Peng,

Xuda Kan,

Wenjie Huang

et al.

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

Published: Jan. 26, 2025

Abstract 0D hybrid Sb(III) halides generally exhibit unique crystal structure and efficient emission. However, achieving white light blue light‐excited near‐infrared (NIR) emission remains an enormous challenge. Herein, a series of (18‐crown‐6@K) 2 SbX 5 (X = Cl, Br) crystals with different Cl/Br rations are synthesized via supramolecular self‐assembly. All compounds show the broadband emission, which stems from self‐trapped excitons in [SbX ] 2− pseudo‐octahedral structure. Particularly, SbCl shows tunable under various excitation wavelengths, ultra‐high luminous efficiency 92.3% is obtained 310 nm excitation. As Br gradually replaces not only bands red‐shift but also facilitate intersystem crossing process singlet to triplet excitons. Thus, independent NIR upon 450 58.2% SbBr crystals. Moreover, high‐performance single‐component light‐emitting diode (WLED) based on LED fabricated, image fusion realized. Finally, combined multiangle imaging WLED irradiation, 3D reconstruction centrifuge tube wrapped capsule successfully demonstrated.

Language: Английский

Citations

1
Component/Stimulus‐Dependent Multi‐Exciton Emission in Zr(IV)‐Based Organic Metal Halides Triggered by Supramolecular Assembly and Antimony Doping DOI Open Access
Hui Peng, Wei Tian, Qilin Wei

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 30, 2025

Abstract Recently, Sb 3+ ‐activated 0D Zr(IV)‐based metal halides have gained enormous attention for their unique optical properties. However, realizing efficient white emission and multiple reversible emissions in a single system remains great challenge. Parallelly, the currently reported organic are mainly through aimless regulation of type A‐site cations, severely limiting development. Herein, all‐inorganic Cs 2 ZrCl 6 :Sb is employed as conformational model, three different compounds ‐doped [18‐crown‐6@A] (A = K, Rb, Cs) developed via supramolecular assembly. All show tunable with luminous efficiency 91.28% [18‐crown‐6@K] , 84.84% [18‐crown‐6@Rb] 78.63% [18‐crown‐6@Cs] which shall stem from ‐induced multi‐exciton [SbCl ] 3− octahedron. Particularly, strong interaction can enhance structural rigidity suppress nonradiative transitions, dominated reason exhibits emission. The component/excitation/temperature/moisture‐dependent PL switching characteristics observed allows to demonstrate applications advanced anti‐counterfeiting information encryption. Moreover, single‐component light‐emitting diode also fabricated, shows high color rendering index 96.1. Therefore, work provides feasible scheme designing Zr(IV) fascinating

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
A core-shell model of polymetallic hybrid metal halides DOI
Dongjie Tian, Jie Lin, Adel Mesbah

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(88), P. 12924 - 12927

Published: Jan. 1, 2024

A core–shell model of polymetallic low-dimensional hybrid metal halides is proposed. This can explain the photoemission properties [(C 6 H 18 N 3 ) 2 ·Pb Br 10 ] (C = 2-(piperazin-1-yl)ethan-1-aminium) coated with a manganese bromide layer.

Language: Английский

Citations

5
Direct Evidence of Hydration and Temperature Effects on the Structure, Spectroscopy and Dynamics of a Novel Mn-based Organic-Inorganic Metal Halide Material for High-Performance LEDs DOI Creative Commons

Francisco Sánchez,

Asmae Ben Abdelhadi, Mario Gutiérrez

et al.

Materials Today Sustainability, Journal Year: 2025, Volume and Issue: unknown, P. 101075 - 101075

Published: Jan. 1, 2025

Language: Английский

Citations

0
Metasurface‐generated Spin‐multiplexed & Grafted Perfect Vector Vortex Beams for High‐dimensional Optical Information Encryption DOI Open Access
Fang Yao, Hao Han,

Qingsong Wang

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 19, 2025

Abstract Increasing the number of optical information encryption (OIE) layers can exponentially enhance its security, which requires introducing additional degrees freedom (DoFs) for light. However, traditional OIE systems encounter challenges due to exponential increases in volume and mass with expansion modulation DoFs, thereby retarding development integrated high‐security OIE. Here, a high‐dimensional dual‐layer (DLOIE) strategy is proposed experimentally established by utilizing novel metasurface‐generated beam, termed spin‐multiplexed grafted perfect vector vortex beam (MGPVVB). MGPVVB generated superposing beams programmable combinations topological charges (CTCs) across two orthogonally circularly polarized states. As key factor DLOIE, introduces new DoF called CTCs be customized within same polarization order (PO). The metasurface well‐suited generating MGPVVBs over wide bandwidth (450–1064 nm). all states on Poincaré sphere are generated. More importantly, DLOIE achieved through an array. For (true false) encoding based PO ellipticity, while verification authenticity governed distinctive CTCs. This advancement enhances security OIE, shows great value applications storage, communications, quantum processing.

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
Photocycloaddition of Zero-Dimensional Metal Halide Hybrids with Reversible Photochromism DOI
Xiaohui Liu,

Chudong Chen,

Yonghong Xiao

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(24), P. 31313 - 31321

Published: June 5, 2024

In this work, two zero-dimensional (0D) metal halide hybrids L2ZnBr4 [1, L = (E)-4-(2-(1H-pyrrol-3-yl)vinyl)-1-methylpyridin-1-ium] and L6Pb3Br12 (2) were prepared, which demonstrated photochromism photoinduced cracking. Upon irradiation at 450 nm, a single crystal-to-single crystal transformation occurred as result of the [2 + 2] photocycloaddition L. Interestingly, compared to complete in 1, only two-thirds monomers could be photodimerized 2 because difference orientation. 1 shows reversible photochromic behavior including rapid response time, few cracks, high conversion rate, good reaction reversibility, while exhibits no significant color change but distinct cracking large local lattice strain induced by inhomogeneous anisotropic deformation. Moreover, results shift photoluminescence 2, attributed variation conjugation π electrons distortion clusters. As proof-of-concept, optical writing is for 1. These findings provide new insights into design stimuli-responsive multifunctional materials.

Language: Английский

Citations

2