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

и другие.

Laser & Photonics Review, Год журнала: 2024, Номер unknown

Опубликована: Авг. 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.

Язык: Английский

Free-standing iridescent films: Crafting circularly polarized luminescence from blue to NIR-II for enhanced anti-counterfeiting performance DOI
Xiaolei Li, Chengyu Jiang, Xuefeng Yang

и другие.

Nano Today, Год журнала: 2024, Номер 55, С. 102197 - 102197

Опубликована: Фев. 9, 2024

Язык: Английский

Процитировано

9
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

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(46)

Опубликована: Авг. 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.

Язык: Английский

Процитировано

9
Efficient Ultraviolet Circularly Polarized Luminescence in Zero‐Dimensional Hybrid Cerium Bromides DOI
Chen Li, Yi Wei, Yan Zhang

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(26)

Опубликована: Апрель 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

Язык: Английский

Процитировано

8
Stepwise amplification of circularly polarized luminescence in indium-based metal halides by regulating their structural dimension DOI Creative Commons

Cui‐Mi Shi,

Haolin Lu,

Jin-Yun Wang

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Фев. 10, 2025

Язык: Английский

Процитировано

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

и другие.

Science China Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Язык: Английский

Процитировано

1
Room Temperature Phosphorescence in Chiral 0D Zn(II) Metal Halide Crystals for Multiple Anti‐Counterfeiting DOI
Yanan Wang, Chao Wang,

Mengjiao Sun

и другие.

Advanced Optical Materials, Год журнала: 2023, Номер 12(5)

Опубликована: Ноя. 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.

Язык: Английский

Процитировано

14
Manipulating Chiroptical Activities in 0D Chiral Hybrid Manganese Bromides by Solvent Molecular Engineering DOI
Chen Li, Yi Wei, Yawen Li

и другие.

Small, Год журнала: 2024, Номер unknown

Опубликована: Май 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.

Язык: Английский

Процитировано

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

и другие.

Advanced Optical Materials, Год журнала: 2023, Номер 11(19)

Опубликована: Май 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.

Язык: Английский

Процитировано

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

Mingyang Xin,

Puxin Cheng,

Rongchao Shi

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(38), С. 26534 - 26542

Опубликована: Сен. 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

Язык: Английский

Процитировано

5
Excited-State Dopant–Host Energy-Level Alignment: Toward a Better Understanding of the Photoluminescence Behaviors of Doped Phosphors DOI
Ranyun Wu,

Yingmeng Liu,

Jiang Tang

и другие.

The Journal of Physical Chemistry Letters, Год журнала: 2023, Номер 14(17), С. 4071 - 4077

Опубликована: Апрель 25, 2023

Luminescent materials, also known as phosphors, have been widely used for applications such emissive displays, fluorescent lamps, light-emitting diodes, and X-ray scintillation detectors. The energy-level diagram of a phosphor is extremely important understanding its photoluminescence behavior. Here, we demonstrate through combined density functional theory experimental study that excited-state alignment accounts the behaviors much better than ground-state alignment. An efficient doped should exhibit type I dopant-host alignment, regardless whether I. A II implies exciton dissociation, resulting in quenching. Our results provide not only reported phosphors but critical guidance designing prospective luminescent materials.

Язык: Английский

Процитировано

10