Finely Controlled Circularly Polarized Luminescence with Multimode Dynamic Response of Hybrid Metal Chlorides for Circularly Polarized White Light‐Emitting Diode and Programmable Information Encryption DOI
Luying Wang, Hui Peng, Qilin Wei

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 17, 2024

Abstract Stimulus‐responsive materials that exhibit efficient circularly polarized luminescence (CPL) have gained much interest for application in advanced smart photonics. Herein, the CPL‐active enantiomorphic 0D Sb 3+ ‐doped (R/S) 2 InCl 7 (R/S = R/S‐2‐methylpiperazine) are synthesized via a solution method. They show broadband yellow emission with near‐unity photoluminescence quantum yield and CPL asymmetry factor of 1.7 × 10 −3 . Their fascinating chiroptical activity should be attributed to chirality transfer self‐trapped exciton caused by strong electron–phonon interaction. Particularly, H O‐induced structural transformation is demonstrated obtain non‐emission ·H O after exposure humid environment. Importantly, exhibits unique nonlinear optical responses, rotation angle between quarter‐wave plate linearly can regulate reversible switching negligible luminescence. Moreover, white light‐emitting diode fabricated combining blue phosphors BaMgAl 17 :Eu 2+ , device tunable control positive warm light regulating linear polarizer plate. Based on responses programmable multi‐mode fluorescence encoding system constructed, four‐level information encryption three‐level encrypted 3D color codes also realized further proof‐of‐concept experiment.

Language: Английский

Reversible Local Protonation‐Deprotonation: Tuning Stimuli‐Responsive Circularly Polarized Luminescence in Chiral Hybrid Zinc Halides for Anti‐Counterfeiting and Encryption DOI
Danyang Liu, Liangbin Xiong, Xi‐Yan Dong

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(46)

Published: Aug. 13, 2024

Abstract Precise control over the organic composition is crucial for tailoring distinctive structures and properties of hybrid metal halides. However, this approach seldom utilized to develop materials that exhibit stimuli‐responsive circularly polarized luminescence (CPL). Herein, we present synthesis characterization enantiomeric zinc bromides: biprotonated (( R/S )‐C 12 H 16 N 2 )ZnBr 4 ‐LH2)ZnBr ) monoprotonated 15 ZnBr ‐LH1) ), derived from chiral amine ( )‐2,3,4,9‐Tetrahydro‐1H‐carbazol‐3‐amine 14 ). These compounds showcase luminescent properties; zero‐dimensional form emits green light at 505 nm, while form, with a pseudo‐layered structure, displays red 599 649 nm. Remarkably, reversible local protonation‐deprotonation behavior cations allows exposure polar solvents heating induce structural transformations between two forms. Theoretical calculations reveal lower energy barrier associated deprotonation process within pyrrole ring responsible observed. enantiomorphic bromides also switchable circular dichroism (CD) CPL properties. Furthermore, their chloride counterparts were successfully obtained by adjusting halogen ions. Importantly, unique characteristics position these halides as promising candidates applications in information storage, anti‐counterfeiting, encryption.

Language: Английский

Citations

9
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 High-Rigidity Organic–Inorganic Metal Halide Hybrid Enabling Reversible and Enhanced Self-Trapped Exciton Emission under High Pressure DOI
Yin Liang, Yingjie Jiang, Ke‐Zhao Du

et al.

Nano Letters, Journal Year: 2023, Volume and Issue: 23(16), P. 7599 - 7606

Published: Aug. 2, 2023

Zero-dimensional organic–inorganic metal halide hybrids provide ideal bulk-crystal platforms for exploring the pressure engineering of electron–phonon coupling (EPC) and self-trapped exciton (STE) emission at molecular level. However, low stiffness inorganic clusters hinders reversible tuning these physical properties. Herein, we designed a Sb3+-doped with high yield (89.4%) bulk modulus (35 GPa) that enables enhanced STE (20-fold) under pressure. The lattice rigidity originates from corner-shared cage-structured tetramers ring-shaped organic ligands. Further, reveal pressure-enhanced regime below 4.5 GPa is owing to hardening preferably EPC strength reducing, while pressure-insensitive within 4.5–8.5 results intercluster Coulombic attraction force resists intracluster compression. These insights into structure–property relation zero-dimensional halides toward wide-band pressure-sensitive light sources.

Language: Английский

Citations

20
Efficient Ultraviolet Circularly Polarized Luminescence in Zero‐Dimensional Hybrid Cerium Bromides DOI
Chen Li, Yi Wei, Yan Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(26)

Published: April 18, 2024

Ultraviolet circularly polarized luminescence (UV-CPL) with high photon energy shows great potential in light sources and stereoselective photopolymerization. However, developing luminescent materials UV-CPL performance remains challenging. Here, we report a pair of rare earth Ce

Language: Английский

Citations

6
Mono‐ and Bi‐Dentate Chiral Ligands Lead to Efficient Circularly Polarized Luminescence in 0D and 3D Semiconducting Copper(I) Iodides DOI

Xiaoqin Ji,

Yang Liu, Ruiqian Li

et al.

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(19)

Published: May 13, 2023

Abstract Chiral hybrid Cu(I)‐based iodides with d 10 closed shell demonstrate great potential for circularly polarized luminescence (CPL) because of high photoluminescence quantum yield (PLQY). Herein, by incorporating mono‐ or bi‐dentate coordination mode ligands as chiral source, the self‐assembly four pairs iodides, namely, ( R / S )‐Cu 4 I (Hmpy) ·H 2 O ‐1), (3Hpy) ‐2), (2MePI) ‐3), and (3AD) ‐4) (where ‐Hmpy = ‐2‐pyrrolidinemethanol, ‐3Hpy ‐3‐hydroxypyrrolidine, ‐2MePI ‐2‐methylpiperazine, ‐3AD ‐3‐aminopiperidine), are reported. With monodentate bidentate ligands, these materials belong to two different structural types: 0D molecular clusters ‐1, ‐2) 3D porous metal–organic frameworks ‐3, ‐4). These all crystallize in non‐centrosymmetric space groups containing similar basic Cu cubane tetramer building units but modes. They also semiconductors, optical bandgaps ranging from 2.70 2.94 eV. The (PL) emissions further characterized, where highest PLQY ≈95% CPL dissymmetry factor g lum ) ≈7 × −3 achieved ‐1. This work offers a systematic comparison between types blocks, bridging flexible shows that copper highly promising candidates next‐generation optoelectronics chiroptics.

Language: Английский

Citations

13
Room Temperature Phosphorescence in Chiral 0D Zn(II) Metal Halide Crystals for Multiple Anti‐Counterfeiting DOI
Yanan Wang, Chao Wang,

Mengjiao Sun

et al.

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 12(5)

Published: Nov. 13, 2023

Abstract The development of metal halides that enable multiple information storage and cryptographic security is highly desirable but remains a challenge. Here, pair 0D Zn(II) halide enantiomers ZnCl 2 ·R/S‐2‐MP with excitation wavelength‐dependent emission room temperature phosphorescence properties are reported. Organic ligands via N─H···Cl hydrogen bonding induce structural chirality. In order to stabilize the triplet state exciton achieve excellent photophysical properties, organic combine halogens promote emission. differences between ·R‐2‐MP ·S‐2‐MP analyzed in depth. Furthermore, combined femtosecond transient absorption (fs‐TA) results, long lifetimes may originate from due synergistic effect components inorganic halides. design strategy advanced anticounterfeiting technology further extended.

Language: Английский

Citations

13
Macroscopic Twisting of Chiral Metal Halide Single Crystals Driven by Thermo-Induced Topochemical Dehydration DOI

Mingyang Xin,

Puxin Cheng,

Rongchao Shi

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(38), P. 26534 - 26542

Published: Sept. 10, 2024

Dynamic twisting crystals, combining the features of dynamic crystals and promise advanced applications in targeted drug delivery, biosensors, microrobots, spiral optoelectronics. However, determination with specific directions remains a formidable challenge practical applications. Herein, based on organic-inorganic hybrid metal halide (OIHMH) single we have realized chirality-induced macroscopic driven by thermo-induced topochemical dehydration reaction. These exhibit molecular-chirality-induced upon heating, along reversals their linear chiroptical circular dichroism nonlinear second harmonic generation dichroism. Such an induced has been attributed to alteration helical arrangement chiral cation post-topochemical dehydration. The feasibility tuning OIHMH switching properties might open up new avenues for developing microactuating optoelectronic

Language: Английский

Citations

5
Manipulating Chiroptical Activities in 0D Chiral Hybrid Manganese Bromides by Solvent Molecular Engineering DOI
Chen Li, Yi Wei, Yawen Li

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: May 20, 2024

Abstract 0D hybrid metal halides (0D HMHs) with fully isolated inorganic units provide an ideal platform for studying the correlations between chiroptical activities and crystal structures at atomic levels. Here, through incorporation of different solvent molecules, a series chiral manganese bromides ( RR/SS ‐C 20 H 28 N 2 ) 3 MnBr 8 ·2X (X = C 5 OH, CH or O) are synthesized to elucidate their properties. They show negligible circular dichroism signals Mn absorptions due 2v ‐symmetric [MnBr 4 ] 2− tetrahedra. However, they display distinct circularly polarized luminescence (CPL) continuously increased asymmetry factors g lum from 10 −4 OH) −3 O). The value is structurally revealed originate enhancement 2‐ tetrahedral bond‐angle distortions, presence molecules. Furthermore, )MnBr ·H O enantiomers larger distortions tetrahedra based on hydrobromic acid‐induced structural transformation ·2H enantiomers. Therefore, such exhibit enhanced CPL | up 1.23 × −2 . This work provides unique insight into enhancing in HMH systems.

Language: Английский

Citations

4
A Universal Strategy to Enhance Circularly Polarized Luminescence Brightness in Chiral Perovskites DOI
Zhengwei Yang,

Haolin Lu,

Yu Zhang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(10)

Published: May 23, 2024

Abstract Chiral perovskites are considered as promising candidates for circularly polarized luminescence (CPL) light source, by attracting the broader scientific community their applications in chiral optoelectronics and spintronics. However, it is still a great challenge to achieve both substantial photoluminescence asymmetry ( g CPL ) high quantum yield (PLQY) simultaneously brightness due limitations associated with magnetic transition dipole moments. Herein, this problem overcome large of 1.6×10 −2 PLQY 56% perovskite through element doping strategy. The substitution Pb 2+ ion smaller Mn ions shrinks crystal lattice around [MnBr 6 ] 4− octahedra, amplifying asymmetric distortion surrounding ions. Moreover, can harvest photoexcitation energy perovskites, its spin‐flipping characteristics enable highly efficient from d–d on levels. Furthermore, strategy proven be universal tactic enhancing confirmed series 1D‐ or 2D‐chiral various ligands halogens. findings provide an in‐depth understanding structure‐property relationship toward optoelectronic spintronic applications.

Language: Английский

Citations

4
Boosting circularly polarized luminescence by optimizing off-centering octahedral distortion in zero-dimensional hybrid indium-antimony halides DOI Creative Commons
Yulian Liu, Yi Wei, Zhishan Luo

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(37), P. 15480 - 15488

Published: Jan. 1, 2024

By optimizing the off-centering distortion of octahedra in 0D hybrid metal halides, high photoluminescence quantum yield near-unity and large dissymmetry factor 3.8 × 10 −2 are achieved, boosting their circularly polarized luminescence.

Language: Английский

Citations

4