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Liu X, Zhang T, Zhou L, Li M, He R. Dual-Emissive γ-[Cu 4I 8] 4- Enables Luminescent Thermochromism in an Organic-Inorganic Hybrid Copper(I) Halide. Inorg Chem 2024; 63:5821-5830. [PMID: 38511502 DOI: 10.1021/acs.inorgchem.3c04141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A highly luminescent (C13H28N2)2Cu4I8 single crystal containing isolated γ-[Cu4I8]4- anionic cluster was synthesized without the use of unsaturated cations. To the best of our knowledge, compounds bearing such like anions are not dual-emitting under UV excitation. However, dual emission does occur in (C13H28N2)2Cu4I8. Moreover, the emission bands were found to be temperature-sensitive, allowing tuning of the emission colors from blue (0.19, 0.20) to green (0.33, 0.47) in the Commission International de L' Eclairage (CIE) chromaticity coordinates. Remarkably, the color could be restored on returning to the initial temperature, confirming an efficient and reversible luminescent thermochromic effect in (C13H28N2)2Cu4I8. The origin of this excellent optical performance is discussed, and the difference in the mechanism with the dual-emissive Cu(I) halide complexes is also elucidated. Overall, our work provides a promising way to achieve efficient luminescent thermochromism. The developed (C13H28N2)2Cu4I8 represents one of the viable alternatives for eco-friendly luminescent thermochromic materials.
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Affiliation(s)
- Xing Liu
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ting Zhang
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Lei Zhou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ming Li
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Rongxing He
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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Dastidar RG, Okamoto T, Takahashi K, Takano Y, Vijayakumar C, Subrahmanyam C, Biju V. Dual-color photoluminescence modulation of zero-dimensional hybrid copper halide microcrystals. NANOSCALE 2024; 16:5107-5114. [PMID: 38227491 DOI: 10.1039/d3nr05503e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Zero-dimensional hybrid copper(I) halides (HCHs) are attractive due to their interesting photoluminescence (PL) properties and the high abundance and low toxicity of copper. In this study, we report green-red dual emission from rhombic 1-butyl-1-methyl piperidinium copper bromide [(Bmpip)2Cu2Br4] microcrystals (MCs) prepared on borosilicate glass. The structure and elemental composition of the MCs are characterized by single crystal X-ray diffraction analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. Interestingly, MCs prepared on an ITO-coated glass plate show an intense green emission compared to the dual emission on a bare glass or plastic substrate. Furthermore, the intensity of the green emission from the MC is enormously increased by powdering using a conductive material, suggesting the deactivation of the red-emitting state by a charge transfer interaction with the conductor. These findings open a new strategy to suppress the self-trapping of excitons by longitudinal optical phonons and control the dual emitting states in HCHs.
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Affiliation(s)
- Rahul Ghosh Dastidar
- Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
| | - Takuya Okamoto
- Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, 001-0020 Japan
| | - Kiyonori Takahashi
- Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, 001-0020 Japan
| | - Yuta Takano
- Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, 001-0020 Japan
| | - Chakkooth Vijayakumar
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram 695 019, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201 002, India
| | | | - Vasudevanpillai Biju
- Graduate School of Environmental Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
- Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido, 001-0020 Japan
- Indian Institute of Technology Hyderabad, Kandi, Telangana 502285, India
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Wang C, Meng W, Luo G, Xu G, Peng M, Xu B, Nie S, Deng Z. RGB tri-luminescence in organic-inorganic zirconium halide perovskites. Chem Sci 2024; 15:2954-2962. [PMID: 38404390 PMCID: PMC10882459 DOI: 10.1039/d3sc06178g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 01/13/2024] [Indexed: 02/27/2024] Open
Abstract
Materials with two or more fluorescence features under different excitation sources have great potential in optical applications, but luminous materials with three emission characteristics have been largely undeveloped. Here, we report a novel zero-dimensional (0D) organic-inorganic hybrid ((C2H5)4N)2ZrCl6 perovskite with multiple emissions. The zirconium-based perovskite exhibits a red emission around 620 nm, a green emission at 527 nm, and a blue emission around 500 nm. The red and green emissions come from self-trapped excitons (STEs) and the d-d transitions of Zr(iv), respectively, which are caused by distortion of the [ZrCl6]2- octahedra. The blue emission is caused by thermally activated delayed fluorescence (TADF), which is similar to that of Cs2ZrCl6. The absolute photoluminescence quantum yield (PLQY) of the red and blue double emission is up to 83% and the PLQY of the green emission is 27%. With different combinations of ((C2H5)4N)2ZrCl6 samples, we achieve a variety of applications, including a two-color luminescent anti-counterfeiting device, a white light-emitting diode (WLED) with a color rendering index (CRI) of 95 and information encryption with different excitations. We also synthesize other hybrid zirconium perovskites with tri-luminescence through a similar method. Our work provides a potential set of excitation-dependent luminescent materials and is expected to expand the basic research and practical applications of multi-luminescence materials.
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Affiliation(s)
- Chuying Wang
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Wen Meng
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Guigen Luo
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Guangyong Xu
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Min Peng
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Bin Xu
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
| | - Shuming Nie
- Departments of Bioengineering, Chemistry, Electrical and Computer Engineering, and Materials Science and Engineering, University of Illinois at Urbana-Champaign Urbana IL 61801 USA
| | - Zhengtao Deng
- College of Engineering and Applied Sciences, State Key Laboratory of Analytical Chemistry for Life Science, National Laboratory of Micro-structures, Nanjing University Nanjing Jiangsu 210023 P. R. China
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