Article
Materials Science, Multidisciplinary
Gaomin Song, Zhongyuan Li, Pifu Gong, Rong-Jun Xie, Zheshuai Lin
Summary: This study synthesized a lead-free OIMH using eco-friendly and stable Sn(IV), which exhibits warm white emission and tunable color rendering index (CRI) with the highest value of 97 among all known OIMHs. The work presents a new strategy towards white light materials with ultra-high CRI by co-regulating organic cations and inorganic polyhedra.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiaohui Zhao, Min Wu, Hao Liu, Yixuan Wang, Kai Wang, Xinyi Yang, Bo Zou
Summary: This study introduces a pressure-treated strategy to achieve remarkable green emission enhancement of organic-inorganic metal halide, demonstrating the positive effects of pressure treatment in boosting emission enhancement and facilitating the design of new materials with desired emission properties.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Shihui He, Shiqiang Hao, Liubing Fan, Kunjie Liu, Chuxin Cai, Christopher Wolverton, Jing Zhao, Quanlin Liu
Summary: Five 0D Zn-based hybrid halides with aromatic organic cations of different carbon-chain lengths were synthesized, and (PMA)2ZnCl4 exhibited the highest photoluminescence quantum yield among reported Zn-based white-emission OIMHs. (PBA)2ZnI4 showed the highest color rendering index among single-component white-light-emitting phosphors. The study demonstrated that the selection of appropriate organics and halogens can enable fine tuning of single-component white-light emission, satisfying varying needs for solid-state lighting.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Chen Xue, Hengming Huang, Sadafumi Nishihara, Vasudevanpillai Biju, Xiao-ming Ren, Takayoshi Nakamura
Summary: This study systematically investigates the broadband emission of one-dimensional lead halide perovskites and discovers that lattice distortion causes the conversion of dark excitons to bright self-trapped excitons. In 1D perovskites, the vibration mode of the Pb-X bond stretching has a larger effect on exciton-phonon coupling. This study provides insights for the rational design of stable and efficient broadband emission materials.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
M. Prabodhi A. Nanayakkara, Lidija Matjacic, Sebastian Wood, Filipe Richheimer, Fernando A. Castro, Sandra Jenatsch, Simon Zufle, Rachel Kilbride, Andrew J. Parnell, Mateus G. Masteghin, Hashini M. Thirimanne, Andrew Nisbet, K. D. G. Imalka Jayawardena, S. Ravi P. Silva
Summary: Organic-inorganic hybrid semiconductor X-ray detectors with ultra-low dark currents, high sensitivity, and broadband X-ray response are suitable for medical and industrial applications due to excellent dose linearity, dose rate linearity, and reproducibility.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yu-Hang Liu, Yi-Fan Wu, Li-Juan Feng, Rui-Rui Zhao, Shan-Xiao Wang, Ming-Ming Zhang, Dan-Yang Wang, Xiang-Wen Kong, Xiao-Wu Lei
Summary: In this study, a reversible conversion between [DMPZ]MnCl4 and [DMPZ](4)(MnCl6)(MnCl4)(2 & BULL;)(H2O)(2) with adjustable emission colors is reported for the first time using kinetic and thermodynamic controlling strategies. The synchronous structural and emission transformations in single-component organic manganese halides are highlighted.
CHEMICAL COMMUNICATIONS
(2023)
Article
Biochemistry & Molecular Biology
Magdalena Rowinska, Anna Piecha-Bisiorek, Wojciech Medycki, Piotr Durlak, Ryszard Jakubas, Anna Gagor
Summary: Hybrid organic-inorganic iodides based on Bi(III) and Sb(III) exhibit integrated functionalities including high dielectric constants, semiconducting properties, and ferroic phases. The pyrrolidinium-based bismuth and antimony iodides reported in this study are ferroelastic at room temperature, with narrow band gaps and semiconducting characteristics. The crystal structure consists of discrete bioctahedral [M2I9]3- ions and disordered pyrrolidinium amines, providing charge balance and acting as spacers between inorganic moieties. Dielectric studies reveal a relaxation process in the kilohertz frequency region associated with the dynamics of organic cations.
Article
Chemistry, Inorganic & Nuclear
Yahui Li, Rui Zheng, Zhi-Hua Fu, Gang Xu, Guan-E Wang
Summary: This paper introduces the use of organic cations as structural templates to regulate the structure of inorganic anions, thereby controlling the luminescence properties of materials. Materials with one-dimensional structures exhibit typical semiconductor behavior and achieve controllable adjustment of fluorescent light color.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Qiujie Wang, Tianxin Bai, Sujun Ji, Hongyuan Zhao, Xuan Meng, Ruiling Zhang, Junke Jiang, Feng Liu
Summary: Rare earth elements are widely used in luminescent materials to modulate their physical and chemical properties. However, the limited availability of stable phosphors crystallized with pure rare earth elements restricts their wider utilization. In this study, two examples of cerium-based organic-inorganic hybrid halides were demonstrated to have the ability to emit ultraviolet light with the shortest emission wavelength reported in metal halide perovskites. These crystals showed high quality and abnormal anti-thermal quenching behavior, making them suitable for practical use in heated environments. A phosphor-converted light-emitting diode fabricated with one of these hybrid halides exhibited stable UV emission and high external quantum efficiency. This study opens up possibilities for designing robust UV-emitting structures based on rare earth hybrid metal halides.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Optics
Yiwei Dong, Ying Han, Runan Chen, Yufan Lin, Bin-Bin Cui
Summary: Due to their high photoluminescence quantum yield and adjustable composition and structures, organic-inorganic hybrid metal halides (MHs) have emerged as promising emitters for next-generation light emitting and displays. By separating inorganic metal halides with larger organic cations, low-dimensional MHs (LDMHs) can be constructed at the molecular level, exhibiting excellent photoluminescence properties and efficient triplet state emission, including room-temperature phosphorescence (RTP), which opens up new possibilities for phosphorescent emitters.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Mingzhen Quan, Yan Xiong, Yiliang Xu, Mingyang Li, Mingyue Chen, Jindong Cao, Jing Zhao, Quanlin Liu
Summary: In this study, two zero-dimensional indium-based halides were reported, and 1% antimony-doped (C3H12N2)3In2Cl12 center dot 2 H2O exhibited more intense, broader emission with a larger Stokes shift compared to 1% antimony-doped (C3H12N2)2InCl7.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Debendra Prasad Panda, Diptikanta Swain, Sounak Sarkar, A. Sundaresan
Summary: In this study, two organic-inorganic hybrid halides were synthesized and the role of halogen bonding was revealed. The first compound showed a unique type-II halogen bonding between organic and inorganic ions, leading to structural changes and modulation of photophysical properties. The second compound demonstrated dual-band emission, possibly due to energy transfer from the organic amine to Mn centers. The role of halogen bonding was explored through quantitative electron density analysis and intermolecular interaction energies.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Meng-Meng Lun, Hao-Fei Ni, Zhi-Xu Zhang, Jun-Yi Li, Qiang-Qiang Jia, Yi Zhang, Yujian Zhang, Da-Wei Fu
Summary: This study presents a novel photoluminescence (PL) temporary quenching phenomenon in a hybrid crystal due to thermodynamic phase transition. This unprecedented optical effect shows features of suitable detectable temperature, narrow response window, high sensitivity, and good cyclability, making it applicable to high-confidentiality encryption applications. A fire-new optical encryption model is devised to demonstrate high information security.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Chang-Qing Jing, Qi-Long Liu, Cheng-Hao Zhao, Yan-Yu Zhao, Cheng-Yang Yue, Xiao-Wu Lei
Summary: A novel one-dimensional hybrid lead halide has been reported, displaying sharp green emission that meets the Rec. 2020 standard and provides the potential for an ultrawide color gamut, while also paving a new way for designing narrow-band emitting LDHPs.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Review
Chemistry, Inorganic & Nuclear
Liwen Kang, Zhenghuan Lin
Summary: This article summarizes the structure, photophysical properties, and white-light mechanism of organic-inorganic hybrid perovskites (OIHPs) with white emission, emphasizing strategies for adjusting white-light performance. OIHPs can achieve wide emission coverage by adjusting the types and proportions of metal cations, halogen anions, and organic components to meet the application requirements of white-light emitting diodes (WLEDs).
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Chenyue Zhao, Zhipeng Ding, Yibin Zhang, Zhigang Ni, Shijun Li, Shaolong Gong, Bo Zou, Kai Wang, Ling Yu
Summary: Different from conventional piezochromic materials, our designed molecule exhibits sensitive and tunable luminescence in response to hydrostatic pressure. The molecule possesses dual-emission and bidirectional shifting characteristics. Experimental studies reveal that the dual-emission behavior is attributed to intramolecular charge transfer and intermolecular excimer. The color change of the molecule from sky-blue to green to deep-blue is a result of intramolecular and intermolecular energy-transfer interactions.
Article
Chemistry, Multidisciplinary
Yuanyuan Fang, Jingtian Wang, Long Zhang, Guangming Niu, Laizhi Sui, Guorong Wu, Kaijun Yuan, Kai Wang, Bo Zou
Summary: Efficient warm white light emission is sought after in single-component materials for light-emitting applications. This study observed an unusual pressure-induced warm white emission enhancement in 2D perovskite (2meptH(2))PbCl4, accompanied by a significant increase in photoluminescence quantum yield. The collapse of the crystal structure triggered by octahedral distortions and the evolution of organic cations led to the emission enhancement, and further collapse promoted the formation of self-trapped excitons and suppressed nonradiative transitions, resulting in continuous photoluminescence enhancement under pressure.
Article
Materials Science, Multidisciplinary
Yue Shi, Zongqing Jin, Pengfei Lv, Kai Wang, Guanjun Xiao, Bo Zou
Summary: This study presents a pressure engineering approach to control the optical features of Mn doped 2D perovskite nanocrystals. The bandgap narrowing and color change were achieved, providing a basis for their applications in opto-pressure sensing.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Kun Shi, Zihao Huo, Tianxiao Liang, Yongming Sui, Chuang Liu, Haiyun Shu, Lin Wang, Defang Duan, Bo Zou
Summary: This study successfully synthesized 1:1 stoichiometric PdH and achieved synthesis under ambient conditions by reducing the initial pressure and quenching with laser heating. The study suggests that the facets (111) of Pd restrict hydrogen atom diffusion, preventing the formation of hydrides.
Article
Chemistry, Multidisciplinary
Yue Shi, Yuan Fu, Zhiwei Ma, Dianlong Zhao, Kai Wang, Guanjun Xiao, Bo Zou
Summary: Copper(I)-based halides have gained attention as a substitute for toxic lead halides due to their abundance, non-toxicity, unique structure, and optoelectric properties. However, finding effective strategies to improve their optical activities and understanding the structure-optical property relationships is still a major concern.
Article
Chemistry, Multidisciplinary
Dianlong Zhao, Ming Cong, Zhun Liu, Zhiwei Ma, Kai Wang, Guanjun Xiao, Bo Zou
Summary: This study reveals the quantitative steric hindrance effect of different organic components in hybrid perovskites and successfully prepares 2D hybrid perovskite (NAPH)2PbCl4 nanoplates using 1-(2-naphthyl)methanamine. The research also demonstrates the reversal phenomenon of pressure-induced emission and establishes the correlation between PIE retention and steric hindrance, providing improved material design and synthesis for applications in white light-emitting diodes and scintillators.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ke Su, Lefu Mei, Qingfeng Guo, Pengfei Shuai, Yujia Wang, Yukun Liu, Yang Jin, Zhijian Peng, Bo Zou, Libing Liao
Summary: A multi-mode optical pressure sensor based on Eu2+-doped Li4SrCa(SiO4)(2) phosphors has been designed, which shows high sensitivity and accuracy in measuring pressure in various complex environments. The sensor demonstrates improved performance compared to commercially available ruby sensors, with a massive redshift in the emission peak and a new approach in pressure readout method.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fan Yang, Ting Geng, Hang Shen, Yan Kou, Guanjun Xiao, Bo Zou, Yulan Chen
Summary: This study introduces a flex-activated mechanophore (FA) that releases fluorescent anthracenes through a retro-Diels-Alder mechanochemical reaction under compression or hydrostatic high pressure. The force delivered to the mechanophore can be modulated by varying the crosslinking density of the networks and the applied macroscopic pressures, leading to incremental increases in mechanophore activation, successive release of anthracenes, and quantitative enhancement of fluorescence intensity. The exceptional potential of FA as a sensitive force probe in different bulk states is highlighted.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Yu Zhou, Dianlong Zhao, Feng Wang, Yue Shi, Zhiwei Ma, Ruijing Fu, Kai Wang, Yongming Sui, Qingfeng Dong, Guanjun Xiao, Bo Zou
Summary: This study presents a synthesis method and band-gap modulation of 2D layered organic-inorganic hybrid perovskite copper-based materials, which improves the photovoltaic application by decreasing the band gap size.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Wenya Zhao, Zhiwei Ma, Yue Shi, Ruijing Fu, Kai Wang, Yongming Sui, Guanjun Xiao, Bo Zou
Summary: In this study, high-brightness yellow light emission was achieved in zero-dimensional lead-free double-perovskite microcrystals by high-pressure processing. The photoluminescence quantum yields were significantly enhanced with mild pressure. Additionally, the compressed microcrystals exhibited a marked piezochromism effect. This research provides valuable insights into the photo-physical mechanism and offers a reliable tool to enhance yellow light efficiency.
CELL REPORTS PHYSICAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yuxiang Dai, Haichao Liu, Ting Geng, Ruijie Duan, Xiaoming Li, Yongli Liu, Wengang Liu, Ben-Guo He, Laizhi Sui, Kai Wang, Bo Zou, Bing Yang, Yang Qi
Summary: The wide application of excimer materials in the OLED field is mainly driven by the regulation of their stacking structure. This study designed three anthracene derivative molecules with sterically hindered substituents and prepared crystals with different aggregating structures to investigate the relationship between their structures and properties. The study found that under high pressures, these anthracene groups exhibit enhanced fluorescence during the formation of excimers, while the ones that have already formed excimers under ambient conditions show a wider red-shift range. The piezochromic fluorescence behavior observed indicates that regulating the aggregation mode of anthracene groups can meet different application requirements and guide the expansion of excimer materials' usage.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zhiqiang Yang, Zhiyuan Fu, Haichao Liu, Min Wu, Nan Li, Kai Wang, Shi-Tong Zhang, Bo Zou, Bing Yang
Summary: The pressure-dependent luminescence behavior of purely organic compounds is an important topic in the field of stimulus-responsive smart materials. This study filled in the gap regarding pressure-dependent room-temperature phosphorescence (RTP) of purely organic compounds by investigating the model molecule selenanthrene (SeAN) with a folded geometry. It discovered a unique phenomenon of pressure-induced RTP enhancement in an SeAN crystal, along with an underlying mechanism involving folding-induced spin-orbit coupling enhancement. In addition, pressure-induced RTP enhancement was observed in an analog of SeAN, which exhibited white-light emission.
Article
Chemistry, Multidisciplinary
Wenya Zhao, Guanjun Xiao, Bo Zou
Summary: High-pressure chemistry plays a significant role in the development of the scientific community. Pressure-induced emission (PIE) in halide perovskites is increasingly recognized for its potential applications in pressure sensing and optoelectronic devices. The importance of PIE and PIE retention in scintillators and solid-state lighting is highlighted for designing high-performance optoelectronic materials. PIE materials not only show promise in scintillator and lighting applications, but also have potential in display imaging and anti-counterfeiting.