Cover Picture: Coordinated Anionic Inorganic Module—An Efficient Approach Towards Highly Efficient Blue‐Emitting Copper Halide Ionic Hybrid Structures (Angew. Chem. Int. Ed. 8/2022)

Li, Haibo; Lv, Yi; Zhou, Zhennan; Tong, Hua; Liu, Wei; Ouyang, Gangfeng

doi:10.1002/anie.202200577

Cited by 17 publications

(22 citation statements)

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“…Because the [ZrCl 6 ] 2− octahedral clusters are predominantly frozen in the triplet state at low temperatures such as 40 K, the emission state at this temperature can be assigned as a pure triplet state. [ 42 ] As the temperature increases, the singlet state is dramatically filled through a continuous RISC process from the triplet state, which enables the emission of high‐energy singlet states, thus resulting in an overall reduction of the PL decay time during the heating process. In addition, because the S 1 state is energetically higher than the T 1 state, so the emission spectrum exhibits a blueshift trend from 461 to 444 nm.…”

Section: Resultsmentioning

confidence: 99%

Thermally Activated Delayed Fluorescence Zirconium‐Based Perovskites for Large‐Area and Ultraflexible X‐ray Scintillator Screens

et al. 2022

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Flexible scintillator screens with environmental stability, high sensitivity, and low cost have emerged as candidates for X‐ray imaging applications. Here, a large‐scale and cost‐efficient solution synthesis of the vacancy‐ordered double perovskite Cs2ZrCl6, which is characterized by thermal activation delayed fluorescence (TADF) dominated by triplet emission under X‐ray irradiation, is demonstrated. The large Stokes shift and efficient luminescence collection of TADF effectively ensure the light outcoupling efficiency. Further, flexible X‐ray scintillator screens with an area of 400 cm2 are prepared using poly(dimethylsiloxane) (PDMS) as the carrier, exhibiting excellent scintillation properties with light yields as high as 49 400 photons MeV−1, spatial resolutions up to 18 lp mm−1 and detection limits as low as 65 nGy s−1. Finally, the high‐quality imaging results of non‐planar and dynamic objects by such screens are demonstrated. It is believed that the explored Cs2ZrCl6@PDMS flexible scintillator screens would offer a big step toward expanding the application range of scintillators in different environments.

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Section: Resultsmentioning

confidence: 99%

Thermally Activated Delayed Fluorescence Zirconium‐Based Perovskites for Large‐Area and Ultraflexible X‐ray Scintillator Screens

et al. 2022

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“…Under the above structural design scheme, to make better use of the synergistic effect of covalent bonding and ionic bonding, and to develop a more universal material synthetic method, a series of novel copper(I) halide hybrid luminescent materials with efficient blue light emission were designed and synthesized (Figure 4a) [25] . Ouyang and Liu used two organic ligands in the reaction, one positively charged (triethylenediamine derivatives) and one electrically neutral (triphenylphosphine, tpp) [25a] . The negatively charged inorganic component and the neutral organic ligand are covalently linked to form an overall negatively charged anionic inorganic module Cu x I x+n (tpp) y n− , which is then ionically bonded with the positively charged organic ligand L + to form an overall charge‐balanced hybrid structure Cu x I x+n (tpp) y (L) n .…”

Section: Ionic Structures With Coordinated Anionic Inorganic Modulesmentioning

confidence: 99%

New Strategy for Optimizing the Properties of Copper Halide Organic‐Inorganic Hybrid Lighting‐emitting Materials

Liu

Zhou

et al. 2022

Chemistry A European J

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Copper(I) halide organic‐inorganic hybrid luminescent materials have many advantages, such as diverse structure, facile synthesis, high luminescent efficiency, tunable optical performance, etc., and show a broad application prospect in energy‐saving lighting, display and other fields. However, compared with commercial rare‐earth‐metal‐based phosphors, the reported hybrids generally suffer from poor stability and low luminescent efficiency, which are the bottleneck problem of their practical application. With the aim of developing high‐performance organic‐inorganic hybrid luminescent materials, a new synthesis strategy has been reported. This strategy can systematically design and synthesis copper(I) halide ionic hybrid structures by combining the covalent bonding and ionic bonding between inorganic and organic components into one structure, and use their synergistic effect to optimizing their properties. This design method is expected to develop high‐performance organic‐inorganic hybrid luminescent materials, promote the in‐depth understanding of this field, and provide new ideas for the optimization of other types of hybrid materials.

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“…Luminescent inorganic–organic hybrid compounds have continued to attract increasing attention owing to their potential for applications in clean and renewable energy devices, including photovoltaics, solid-state lighting, and sensing. − These compounds are made of both inorganic and organic components, which are held together through ionic and/or covalent bonds. Due to their hybrid nature, these materials possess excellent optical, magnetic, and electrical properties inherited from the inorganic components, and good flexibility and tunability inherited from the organic parts. , Moreover, the integration of the two components at the (supra)molecular level also results in the appearance of new and unique properties, which are extrinsic to each counterpart alone. − …”

Section: Introductionmentioning

confidence: 99%

New Approach toward Dual-Emissive Organic–Inorganic Hybrids by Integrating Mn(II) and Cu(I) Emission Centers in Ionic Crystals

Artem’ev

Davydova

Berezin

et al. 2022

ACS Appl. Mater. Interfaces

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Inorganic–organic hybrid luminescent materials have received great attention for their potential applications in a wide range of clean/renewable energy-related areas, including photovoltaics and solid-state lighting. Herein, we present a unique and general “Mn + Cu” approach by blending two earth-abundant luminogenic metals, manganese and copper, within a single ionic structure to construct a remarkable family of low-cost and multifunctional hybrid materials featuring dual emission, as well as triboluminescence and second-harmonic generation response. The novel hybrid materials are made of diphosphine dioxide-chelated [Mn(O∧O)3]2+ cations and various anionic [Cu x I y ](y−x)– clusters, ensuring manifestation of dual phosphorescence streamed from octahedral Mn2+ ions (605–648 nm) and iodocuprate anions (480–728 nm). Noteworthily, the relative ratio of the emission bands, and hence a resulting emission chromaticity, can be tuned in a wide range through modification of cluster [Cu x I y ](y−x)– modules. The structural diversity, enhanced robustness, and up to 100% luminescence quantum yield make the designed materials promising phosphors for lighting and sensing applications.

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Cover Picture: Coordinated Anionic Inorganic Module—An Efficient Approach Towards Highly Efficient Blue‐Emitting Copper Halide Ionic Hybrid Structures (Angew. Chem. Int. Ed. 8/2022)

Cited by 17 publications

References 0 publications

Thermally Activated Delayed Fluorescence Zirconium‐Based Perovskites for Large‐Area and Ultraflexible X‐ray Scintillator Screens

Thermally Activated Delayed Fluorescence Zirconium‐Based Perovskites for Large‐Area and Ultraflexible X‐ray Scintillator Screens

New Strategy for Optimizing the Properties of Copper Halide Organic‐Inorganic Hybrid Lighting‐emitting Materials

New Approach toward Dual-Emissive Organic–Inorganic Hybrids by Integrating Mn(II) and Cu(I) Emission Centers in Ionic Crystals

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