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Liang S, Wei J, Xu K, Xue D, Chen P, Zhou L, Pang Q, Zhang JZ. Synthesis and Chiroptical Properties of Chiral Lead Halide Molecular Clusters. J Phys Chem Lett 2025; 16:2771-2777. [PMID: 40053845 DOI: 10.1021/acs.jpclett.4c03164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2025]
Abstract
Chiral lead halide molecular clusters (MCs) consisting of PbBr2, neutral achiral butylamine (BTYA), and chiral methylbenzylamine [(R/S)-MBA] with unique chiral optical properties in both the solution and solid states have been synthesized using ligand-assisted reprecipitation and depositing, separately. Ultraviolet-visible (UV-vis) electronic absorption and photoluminescence (PL) spectra show the first electronic absorption band and sharp blue emission band of the chiral MCs that peaked at 404 and 412 nm, respectively, in both solution and films. The emission asymmetry factor |glum| of the chiral MCs is 1.04 × 10-3 in solution and 2.01 × 10-3 in the film state at room temperature, indicating excellent circularly polarized luminescence (CPL) properties. This pronounced asymmetry is attributed to the chiral transfer from the chiral ligand to the BTYA-capped PbBr2 framework due to the chiral MBA ligand coordination with Pb2+. The samples exhibited excellent ambient stability for over 1 month, primarily due to strong BTYA-PbBr2 coordination. The MCs maintained their structure and CPL properties in the solid state, which is important for photonic applications.
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Affiliation(s)
- Sengui Liang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Jianwu Wei
- School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Ke Xu
- Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen, Guangdong 518110, People's Republic of China
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, Guangdong 518055, People's Republic of China
| | - Dongfeng Xue
- Shenzhen Institute for Advanced Study, University of Electronic Science and Technology of China, Shenzhen, Guangdong 518110, People's Republic of China
| | - Peican Chen
- School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Liya Zhou
- School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Qi Pang
- School of Chemistry and Chemical Engineering, State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, Key Laboratory of Electrochemical Energy Materials, Guangxi University, Nanning, Guangxi 530004, People's Republic of China
| | - Jin Zhong Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, Santa Cruz, California 95064, United States
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Xiao J, Zheng H, Liu Y, Fang L, Li J, Kim J, Wang Y, Liu Q, Ma X, Hou S. Strain-Amplified Exciton Chirality in Organic-Inorganic Hybrid Materials. PHYSICAL REVIEW LETTERS 2024; 133:056903. [PMID: 39159092 DOI: 10.1103/physrevlett.133.056903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/25/2024] [Accepted: 06/07/2024] [Indexed: 08/21/2024]
Abstract
Chiral organic-inorganic hybrids combining chirality of organic molecules and semiconducting properties of inorganic frameworks generate chiral excitons without external spin injection, creating the potential for chiroptoelectronics. However, the relationship between molecular chirality and exciton chirality is still unclear. Here we show the strain-amplified exciton chirality in one-dimensional chiral metal halides. Utilizing chirality-induced spin-orbital coupling theory, we quantitatively demonstrate the impact of the strain-engineered molecular assembly of chiral cations on exciton chirality, offering a feasible way to amplify exciton chirality by molecular manipulation.
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Affiliation(s)
| | | | | | | | | | | | | | - Qi Liu
- School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, People's Republic of China
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Yan SF, Guo Y, Liu W, Guo SP, Wu J. Tellurium(IV) Halide Achieving Effective Nonlinear-Optical Activity: The Role of Chiral Ligands and Lattice Distortion. Inorg Chem 2024; 63:73-77. [PMID: 38153229 DOI: 10.1021/acs.inorgchem.3c04192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Chiral organic-inorganic hybrid metal halides are a promising class of nonlinear-optical materials with unique optical properties and flexible crystal structures. However, the structures and properties of chiral hybrid tellurium halides, especially second harmonic generation (SHG), have not been reported. Here, by introducing chiral organic molecule (R/S)-methylbenzylammonium (R/S-MBA), we synthesized a pair of novel zero-dimensional (0D) chiral tellurium-based hybrid halides with noncentrosymmetric space group C2, (R/S-MBA)2TeCl6 (R/S-Cl). Single-crystal X-ray diffraction analysis and solid-state circular dichroism (CD) spectra confirm that R/S-Cl shows obvious enantiomer enrichment. Moreover, the resulting chiral products present an efficient SHG response. Interestingly, through manipulation of halogen atoms, two pairs of achiral tellurium halides, (R/S-MBA)2TeBr6 (R/S-Br) and (R/S-MBA)2TeI6 (R/S-I), were obtained, both of which crystallize in the centrosymmetric space group R3̅. It is noteworthy that R/S-I has a narrow band gap of 1.55 eV, which is smaller than that of most 0D metal halides and comparable to that of three-dimensional lead halide, showing its potential as a highly efficient light absorber.
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Affiliation(s)
- Shu-Fang Yan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Yue Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Wenlong Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Sheng-Ping Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
| | - Jiajing Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, P. R. China
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Azmy A, Konovalova DM, Lepore L, Fyffe A, Kim D, Wojtas L, Tu Q, Trinh MT, Zibouche N, Spanopoulos I. Synthesis and Optical Properties of One Year Air-Stable Chiral Sb(III) Halide Semiconductors. Inorg Chem 2023. [PMID: 38009949 DOI: 10.1021/acs.inorgchem.3c03098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Chiral hybrid metal-halide semiconductors (MHS) pose as ideal candidates for spintronic applications owing to their strong spin-orbit coupling (SOC), and long spin relaxation times. Shedding light on the underlying structure-property relationships is of paramount importance for the targeted synthesis of materials with an optimum performance. Herein, we report the synthesis and optical properties of 1D chiral (R-/S-THBTD)SbBr5 (THBTD = 4,5,6,7-tetrahydro-benzothiazole-2,6-diamine) semiconductors using a multifunctional ligand as a countercation and a structure directing agent. (R-/S-THBTD)SbBr5 feature direct and indirect band gap characteristics, exhibiting photoluminescence (PL) light emission at RT that is accompanied by a lifetime of a few ns. Circular dichroism (CD), second harmonic generation (SHG), and piezoresponse force microscopy (PFM) studies validate the chiral nature of the synthesized materials. Density functional theory (DFT) calculations revealed a Rashba/Dresselhaus (R/D) spin splitting, supported by an energy splitting (ER) of 23 and 25 meV, and a Rashba parameter (αR) of 0.23 and 0.32 eV·Å for the R and S analogs, respectively. These values are comparable to those of the 3D and 2D perovskite materials. Notably, (S-THBTD)SbBr5 has been air-stable for a year, a record performance among chiral lead-free MHS. This work demonstrates that low-dimensional, lead-free, chiral semiconductors with exceptional air stability can be acquired, without compromising spin splitting and manipulation performance.
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Affiliation(s)
- Ali Azmy
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Daria M Konovalova
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Leah Lepore
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Alexander Fyffe
- Department of Physics, University of South Florida, Tampa, Florida 33620, United States
| | - Doyun Kim
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, United States
| | - Lukasz Wojtas
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
| | - Qing Tu
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77840, United States
| | - Minh Tuan Trinh
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Nourdine Zibouche
- Department of Chemistry, University of Lancaster, Lancaster LA1 4YW, U.K
| | - Ioannis Spanopoulos
- Department of Chemistry, University of South Florida, Tampa, Florida 33620, United States
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Song M, Wang H, Hu Z, Zhang Y, Liu T, Wang H. The Role of Polaronic States on the Spin Dynamics in Solution-Processed Two-Dimensional Layered Perovskite with Different Layer Thickness. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2302554. [PMID: 37395386 PMCID: PMC10502664 DOI: 10.1002/advs.202302554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/08/2023] [Indexed: 07/04/2023]
Abstract
2D lead halide perovskites (LHPs) show strong excitonic and spin-orbit coupling effects, generating a facile spin injection. Besides, they possess a polaron character due to the soft crystal lattice, which can prolong the spin lifetime, making them favorable materials for spintronic applications. Here, the spin dynamics of 2D PEA2 PbI4 (MAPbI3 )n -l thin films with different layers by temperature- and pump fluence-dependent circularly polarization-resolved transient absorption (TA) measurements is studied. These results indicate that the spin depolarization mechanism is gradually converted from the Maialle-Silva-Sham (MSS) mechanism to the polaronic states protection mechanism with the layer number increasing from = 1 to 3, which is determined by the interplay between the strength of Coulomb exchange interaction and the strength of polaronic effect. While for ≥ 4, the Elliot-Yafet (EY) impurities mechanism is proposed, in which the formed polaronic states with free charge carriers no longer play the protective role.
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Affiliation(s)
- Mu‐Sen Song
- State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun130012China
| | - Hai Wang
- State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun130012China
| | - Zi‐Fan Hu
- State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun130012China
| | - Yu‐Peng Zhang
- State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun130012China
| | - Tian‐Yu Liu
- State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun130012China
| | - Hai‐Yu Wang
- State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun130012China
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Fu J, Ramesh S, Melvin Lim JW, Sum TC. Carriers, Quasi-particles, and Collective Excitations in Halide Perovskites. Chem Rev 2023. [PMID: 37276018 DOI: 10.1021/acs.chemrev.2c00843] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Halide perovskites (HPs) are potential game-changing materials for a broad spectrum of optoelectronic applications ranging from photovoltaics, light-emitting devices, lasers to radiation detectors, ferroelectrics, thermoelectrics, etc. Underpinning this spectacular expansion is their fascinating photophysics involving a complex interplay of carrier, lattice, and quasi-particle interactions spanning several temporal orders that give rise to their remarkable optical and electronic properties. Herein, we critically examine and distill their dynamical behavior, collective interactions, and underlying mechanisms in conjunction with the experimental approaches. This review aims to provide a unified photophysical picture fundamental to understanding the outstanding light-harvesting and light-emitting properties of HPs. The hotbed of carrier and quasi-particle interactions uncovered in HPs underscores the critical role of ultrafast spectroscopy and fundamental photophysics studies in advancing perovskite optoelectronics.
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Affiliation(s)
- Jianhui Fu
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Sankaran Ramesh
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Jia Wei Melvin Lim
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Energy Research Institute @NTU (ERI@N), Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Drive, Singapore 637553, Singapore
| | - Tze Chien Sum
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
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Li J, Liu MH, Shen HY, Liu MZ, Wu JT, Zhang B. A semiconductive copper iodobismuthate hybrid: structure, optical properties and photocurrent response. Dalton Trans 2023; 52:2999-3005. [PMID: 36790336 DOI: 10.1039/d2dt03998b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Pursuits of new types of Pb-free heterometallic halides adequate for photovoltaic applications are still urgent but challenging. In this study, by using in situ-produced [(Me)2-(DABCO)]2+ (DABCO = 1,4-diazabicyclo[2.2.2]octane; Me = methyl) cations as structure-directing agents, we successfully constructed a non-perovskite copper iodobismuthate hybrid, namely [(Me)2-(DABCO)]2Cu2Bi2I12 (1), which features discrete [Cu2Bi2I12]4- anionic moieties formed by the building units of [CuI4] tetrahedra and [BiI6] octahedra. UV-Vis diffuse reflectance analyses showed that compound 1 possesses semiconductive behaviors with a narrow optical bandgap of 1.80 eV. More importantly, it exhibits excellent photoelectric switching abilities, and its photocurrent density (2.30 μA cm-2) far exceeds those of some high-performance halide-based counterparts. Different from many heterometallic analogues, noteworthily, it also has dispersive band structure and strong electronic coupling near the Fermi level, resulting in a material with small effective masses that may be responsible for the good photoelectricity. This study may offer new guidance for the design and synthesis of eco-friendly heterometallic halides with unique structures and desirable properties.
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Affiliation(s)
- Jun Li
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Ming-Hui Liu
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
| | - Hong-Yao Shen
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
| | - Meng-Zhen Liu
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
| | - Jin-Ting Wu
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China.
| | - Bo Zhang
- College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
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