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Metal-organic framework radiochromic materials: Recent advances and applications SCIE
期刊论文 | 2025 , 534 | COORDINATION CHEMISTRY REVIEWS
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Abstract :

Photochromic materials, renowned for their reversible light-induced responses, have found widespread applications in areas such as optical storage, photosensitive devices and anti-counterfeiting technologies. Recently, metal-organic framework (MOF) radiochromic materials have attracted increasing attention due to their advantageous properties of good design flexibility, visualization capabilities, cost-effectiveness and rapid radiation response. These properties position MOFs as promising substitutes for traditional commercial radiation detection materials. In this review, we primarily discuss MOF radiation-induced chromic materials, which are driven by photoinduced electron transfer mechanisms resulting in radical generation, characterized by rapid radiation response and structural adaptability. Firstly, we explore the chromic mechanisms, performance evaluation parameters, and structural categories of MOF chromic materials. Subsequently, we discuss their multifunctional applications, followed by an analysis and summary of the modulation of their photoelectric response. Finally, we present our insights into the future development and structural modulation of MOF radiation-induced chromic materials, emphasizing their research significance and potential applications in radiation detection.

Keyword :

Electron transfer Electron transfer Metal-organic framework Metal-organic framework Photoelectric response Photoelectric response Radiochromism Radiochromism

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GB/T 7714 Wei, Qing-Song , Di, Yi-Ming , You, Ming-Hua et al. Metal-organic framework radiochromic materials: Recent advances and applications [J]. | COORDINATION CHEMISTRY REVIEWS , 2025 , 534 .
MLA Wei, Qing-Song et al. "Metal-organic framework radiochromic materials: Recent advances and applications" . | COORDINATION CHEMISTRY REVIEWS 534 (2025) .
APA Wei, Qing-Song , Di, Yi-Ming , You, Ming-Hua , Chen, Hong-Ming , Lin, Mei-Jin . Metal-organic framework radiochromic materials: Recent advances and applications . | COORDINATION CHEMISTRY REVIEWS , 2025 , 534 .
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Metal–organic framework radiochromic materials: Recent advances and applications Scopus
期刊论文 | 2025 , 534 | Coordination Chemistry Reviews
Triplet Excitons Harvesting in Host-Guest Doped Organic Glassy Scintillators for High-Resolution X-Ray Imaging SCIE
期刊论文 | 2025 | ADVANCED FUNCTIONAL MATERIALS
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Abstract :

Organic fluorescent glassy scintillators hold great promise for security screening and medical imaging due to their excellent optical transparency and good processability. However, their limited exciton utilization, particularly the inefficient harvesting of 75% triplet excitons, restricts radioluminescence (RL) efficiency and imaging resolution. Herein, a general host-guest doping strategy is proposed to enhance triplet exciton harvesting and scintillation performance in organic fluorescent glass. Specifically, using 1,3-Bis(9H-carbazol-9-yl)benzene (mCP) as a glass-forming host and doping it with three types of high triplet-utilization emitters (HMB, IrPA, and HXF), the obtained HMB@mCPG, IrPA@mCPG, and HXF@mCPG glasses exhibit thermally activated delayed fluorescence, phosphorescence and delayed fluorescence from inverted singlet-triplet gap, respectively. Compared to pristine mCP glass, these doped glasses exhibit RL intensity enhancements of 3.4-fold (HMB@mCPG), 6.2-fold (IrPA@mCPG), and 3.4-fold (HXF@mCPG), respectively. The improvements are attributed to efficient host-guest energy transfer, which enables effective harvesting of triplet excitons and suppression of aggregation-induced quenching in glassy materials. Furthermore, all samples enable X-ray imaging with spatial resolutions exceeding 20 lp mm-1, with HXF@mCPG even achieving over 30 lp mm-1. This work highlights a versatile and effective triplet-harvesting strategy for advancing the performance of organic glassy scintillators, paving the way toward high-resolution X-ray imaging applications.

Keyword :

host-guest doping host-guest doping organic glassy scintillator organic glassy scintillator triplet excitons harvesting triplet excitons harvesting X-ray imaging X-ray imaging

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GB/T 7714 Fang, Xin , Zheng, Jiaqi , Chen, Jingru et al. Triplet Excitons Harvesting in Host-Guest Doped Organic Glassy Scintillators for High-Resolution X-Ray Imaging [J]. | ADVANCED FUNCTIONAL MATERIALS , 2025 .
MLA Fang, Xin et al. "Triplet Excitons Harvesting in Host-Guest Doped Organic Glassy Scintillators for High-Resolution X-Ray Imaging" . | ADVANCED FUNCTIONAL MATERIALS (2025) .
APA Fang, Xin , Zheng, Jiaqi , Chen, Jingru , Xu, Xiaocong , Ye, Yuanji , Chen, Hongming et al. Triplet Excitons Harvesting in Host-Guest Doped Organic Glassy Scintillators for High-Resolution X-Ray Imaging . | ADVANCED FUNCTIONAL MATERIALS , 2025 .
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Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection SCIE
期刊论文 | 2025 , 21 (10) | SMALL
WoS CC Cited Count: 1
Abstract&Keyword Cite Version(4)

Abstract :

Metal-free molecular perovskites have shown great potential for X-ray detection due to their tunable chemical structures, low toxicity, and excellent photophysical properties. However, their limited X-ray absorption and environmental instability restrict their practical application. In this study, cesium-based molecular perovskites (MDABCO-CsX3, X = Cl, Br, I) are developed by introducing Cs+ at the B-site to enhance X-ray absorption while retaining low toxicity. The effects of halide modulation on the physical properties and device performance are systematically investigated. Among the variants, MDABCO-CsBr3 exhibited superior environmental stability, attributed to the optimal ionic radius and high chemical stability of Br-. This stability is further enhanced by a higher tolerance factor, which promotes a stable 3D cubic structure and suppresses ion migration within the crystal. Consequently, MDABCO-CsBr3-based X-ray detectors demonstrated reduced ionic migration, minimal dark current drift, and a stable current response under X-ray exposure, achieving a high sensitivity of 4124 mu C Gy-1 cm-2 and a low detection limit of 0.45 mu Gy s-1. Moreover, the devices exhibit excellent thermal stability, operating effectively at temperatures up to 130 degrees C. These results highlight MDABCO-CsBr3 as a promising candidate for stable and efficient X-ray detection, expanding the applicability of molecular perovskites in advanced radiation detection technologies.

Keyword :

cesium-substituted cesium-substituted environmental stability environmental stability molecular perovskite molecular perovskite X-ray detection X-ray detection

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GB/T 7714 Wu, Liang , Wei, Qingsong , Di, Yiming et al. Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection [J]. | SMALL , 2025 , 21 (10) .
MLA Wu, Liang et al. "Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection" . | SMALL 21 . 10 (2025) .
APA Wu, Liang , Wei, Qingsong , Di, Yiming , Chen, Fuhai , Qiu, Qiangwen , Shan, Xin et al. Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection . | SMALL , 2025 , 21 (10) .
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Cesium‐Based Molecular Perovskites With Superior Stability for High‐Performance X‐Ray Detection
期刊论文 | 2025 , 21 (10) , n/a-n/a | Small
Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection Scopus
期刊论文 | 2025 , 21 (10) | Small
Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection EI
期刊论文 | 2025 , 21 (10) | Small
Cesium-Based Molecular Perovskites With Superior Stability for High-Performance X-Ray Detection Scopus
期刊论文 | 2025 | Small
Ultrabright and Water-Stable Eu(III)-Based MOF Scintillators Sensitized by Dual-Antenna Ligands for Real-Time and Underwater X-Ray Imaging SCIE
期刊论文 | 2025 , 64 (27) | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
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Abstract :

Lanthanide-based metal-organic framework (Ln-MOF) scintillators are promising for X-ray imaging owing to their structural tunability and high X-ray attenuation. However, achieving efficient triplet-sensitized scintillation remains challenging due to the inefficient energy transfer between organic ligand triplets and lanthanide centers, leading to weak radioluminescence and limited imaging resolution. Herein, we propose a dual-antenna ligand strategy by synergizing 4,4 '-oxybis (benzoic acid) (Oba) and phenanthroline derivatives (1,10-phenanthroline = Phen; or Bathophenanthroline = Bphen) with Eu3+ ions, constructing ultrabright Eu-O-Phen and Eu-O-Bphen scintillators. Notably, Eu-O-Bphen demonstrated a record relative light yield of 60331 +/- 28 photons MeV-1, outperforming Eu-O-Phen by 71%. This superior scintillation performance originates from an 86.3 +/- 0.19% photoluminescence quantum yield, attributed to enhanced ligand-to-metal energy transfer efficiency and the suppression of pi-pi stacking among organic chromophore ligands. Besides, the fabrication of flexible Eu-O-Bphen films achieves a spatial resolution of 37.0 lp mm-1 in static imaging and enables real-time dynamic X-ray imaging at 60 fps (2 K). Additionally, it exhibited exceptional water stability, with negligible performance degradation in water for over 100 days, allowing clear underwater visualization of circuit boards under X-ray irradiation. It provides a promising strategy for developing high-performance water-stable scintillators via ligand engineering.

Keyword :

Dual-antenna ligands Dual-antenna ligands Dynamic X-ray imaging Dynamic X-ray imaging Metal-organic frameworks Metal-organic frameworks Scintillators Scintillators Water-stable Water-stable

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GB/T 7714 Chen, Hongming , Yang, Xi , Ye, Yuanji et al. Ultrabright and Water-Stable Eu(III)-Based MOF Scintillators Sensitized by Dual-Antenna Ligands for Real-Time and Underwater X-Ray Imaging [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (27) .
MLA Chen, Hongming et al. "Ultrabright and Water-Stable Eu(III)-Based MOF Scintillators Sensitized by Dual-Antenna Ligands for Real-Time and Underwater X-Ray Imaging" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 64 . 27 (2025) .
APA Chen, Hongming , Yang, Xi , Ye, Yuanji , Hong, Hongyang , Wei, Qingsong , Zhu, Yanan et al. Ultrabright and Water-Stable Eu(III)-Based MOF Scintillators Sensitized by Dual-Antenna Ligands for Real-Time and Underwater X-Ray Imaging . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2025 , 64 (27) .
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Ultrabright and Water-Stable Eu(III)-Based MOF Scintillators Sensitized by Dual-Antenna Ligands for Real-Time and Underwater X-Ray Imaging Scopus
期刊论文 | 2025 , 64 (27) | Angewandte Chemie - International Edition
Ultrabright and Water-Stable Eu(III)-Based MOF Scintillators Sensitized by Dual-Antenna Ligands for Real-Time and Underwater X-Ray Imaging EI
期刊论文 | 2025 , 64 (27) | Angewandte Chemie - International Edition
Crown Ether-Assisted Alkali-Metal Copper(I) Iodide Supramolecular Scintillators with Near-Unity Emission for Ultrahigh-Resolution X-Ray Imaging SCIE
期刊论文 | 2025 , 35 (33) | ADVANCED FUNCTIONAL MATERIALS
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Abstract :

Harnessing supramolecular interactions to regulate the structure and performance of functional materials is a key challenge in materials chemistry. Herein, the study utilizes 18-crown-6 (18C6) ether-assisted alkali-metal (Na, K, Cs) copper(I) iodide supramolecular assemblies to precisely regulate the material structures. This approach facilitated the transition from 1D mono-royal crown coordination (18C6@KCuI2, CKCI) to 0D di-royal crown ((18C6)(2)@Na-2(H2O)(3)Cu4I6, CNCI) and tri-royal crown ((18C6)(3)@Cs2Cu2I4, CCCI) structures. Interestingly, the CCCI single-crystal exhibits outstanding scintillation properties, with a high relative light yield of 71 000 photons MeV-1 and an ultralow detection limit of 39.3 nGy s(-1), which can be attributed to the synergistic effects of 18C6 and copper-iodide clusters. It stabilizes the self-trapped exciton state, enhances exciton localization, and reduces non-radiative losses, thus resulting in a large Stokes shift of 193 nm and near-unity photoluminescence quantum yield of 99.4%. Additionally, 18C6 can promote crystal nucleation and growth, making it easy to prepare centimeter-scale transparent single crystals with >80% transmittance, such as CCCI single crystal can achieve an ultrahigh-resolution X-ray imaging of 26.3 lp mm(-1). It demonstrates that the structure and performance of halide scintillators can be regulated through supramolecular interactions, which provides a new approach for developing high-performance scintillator materials.

Keyword :

18-crown-6 18-crown-6 copper(I) iodide copper(I) iodide self-trapped exciton state self-trapped exciton state supramolecular scintillators supramolecular scintillators X-ray imaging X-ray imaging

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GB/T 7714 Ye, Yuanji , Di, Yiming , Zhou, Jiahao et al. Crown Ether-Assisted Alkali-Metal Copper(I) Iodide Supramolecular Scintillators with Near-Unity Emission for Ultrahigh-Resolution X-Ray Imaging [J]. | ADVANCED FUNCTIONAL MATERIALS , 2025 , 35 (33) .
MLA Ye, Yuanji et al. "Crown Ether-Assisted Alkali-Metal Copper(I) Iodide Supramolecular Scintillators with Near-Unity Emission for Ultrahigh-Resolution X-Ray Imaging" . | ADVANCED FUNCTIONAL MATERIALS 35 . 33 (2025) .
APA Ye, Yuanji , Di, Yiming , Zhou, Jiahao , Qiu, Qiangwen , Chen, Yuhua , Zhong, Shanyuan et al. Crown Ether-Assisted Alkali-Metal Copper(I) Iodide Supramolecular Scintillators with Near-Unity Emission for Ultrahigh-Resolution X-Ray Imaging . | ADVANCED FUNCTIONAL MATERIALS , 2025 , 35 (33) .
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Crown Ether-Assisted Alkali-Metal Copper(I) Iodide Supramolecular Scintillators with Near-Unity Emission for Ultrahigh-Resolution X-Ray Imaging EI
期刊论文 | 2025 , 35 (33) | Advanced Functional Materials
Crown Ether-Assisted Alkali-Metal Copper(I) Iodide Supramolecular Scintillators with Near-Unity Emission for Ultrahigh-Resolution X-Ray Imaging Scopus
期刊论文 | 2025 | Advanced Functional Materials
Guest-Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High-Resolution X-Ray Imaging SCIE
期刊论文 | 2024 , 34 (41) | ADVANCED FUNCTIONAL MATERIALS
WoS CC Cited Count: 12
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Abstract :

Organic scintillators, pivotal in security and medical applications, face challenges due to limited X-ray absorption and exciton utilization. Herein, a novel class of organic scintillators is introduced, named guest-induced thermally activated delayed fluorescence (TADF) within supramolecular macrocycles via host-guest through-space charge transfer (TSCT). Four co-crystals are obtained through orthogonal crystallizations involving calix[3]acridan (C[3]A) and calix[3]phenothiazine (C[3]P) macrocycles as hosts, along with 1,2-dicyanobenzene (DCB) and 4-bromo-1,2-benzenedicarbonitrile (BrDCB) as guests. Interestingly, DCB@C[3]A and BrDCB@C[3]A co-crystals exhibit strong host-guest TSCT with reduced single-triplet energy gap for efficient TADF emission, which leads to enhanced exciton utilization and X-ray absorption, yielding radioluminescence intensities over 29 and 25 times higher than C[3]A. Similarly, substituting C[3]A with C[3]P, the obtained TADF co-crystals also outperform C[3]P in scintillation performance. Additionally, the scintillation color of co-crystals can be adjusted by varying the electron-donating abilities of macrocycles and the electron-accepting abilities of guests, offering a simpler color-tuning mechanism than covalent-bonded scintillators. Furthermore, the flexible film based on DCB@C[3]A exhibits promising application in X-ray radiography, showcasing a high spatial resolution of 20 lp mm-1 @MTF = 0.77. The innovative strategy of fabricating organic scintillators via reversible non-covalent interactions presents a novel solution for designing color-tunable and high-performance scintillators. The Table of Contents (TOC) image illustrates that novel organic supramolcular macrocycle scintillators with guest-induced TADF emission via host-guest through-space charge transfers, enabling efficient and color-tunable X-ray luminescence, as well as high-resolution imaging of 20 lp mm-1 in devices. image

Keyword :

organic scintillators organic scintillators supramolecular macrocycles supramolecular macrocycles thermally activated delayed fluorescence thermally activated delayed fluorescence through-space charge transfers through-space charge transfers X-ray imaging X-ray imaging

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GB/T 7714 Zhang, Guozhen , Chen, Fuhai , Di, Yiming et al. Guest-Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High-Resolution X-Ray Imaging [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (41) .
MLA Zhang, Guozhen et al. "Guest-Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High-Resolution X-Ray Imaging" . | ADVANCED FUNCTIONAL MATERIALS 34 . 41 (2024) .
APA Zhang, Guozhen , Chen, Fuhai , Di, Yiming , Yuan, Siqi , Zhang, Yang , Quan, Xin et al. Guest-Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High-Resolution X-Ray Imaging . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (41) .
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Guest‐Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High‐Resolution X‐Ray Imaging
期刊论文 | 2024 , 34 (41) , n/a-n/a | Advanced Functional Materials
Guest-Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High-Resolution X-Ray Imaging Scopus
期刊论文 | 2024 , 34 (41) | Advanced Functional Materials
Guest-Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High-Resolution X-Ray Imaging EI
期刊论文 | 2024 , 34 (41) | Advanced Functional Materials
Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging SCIE
期刊论文 | 2024 | SMALL
Abstract&Keyword Cite Version(3)

Abstract :

Semiconductive metal-organic frameworks (MOFs) with donor-acceptor (D-A) characteristics have garnered attractive attention due to their capacity for separating and transferring photogenerated charges, making them promising candidates for high-performance X-ray detectors. However, the low charge transfer efficiency between the metal nodes and organic ligands limits the X-ray-to-electricity conversion efficiency of these materials. Herein, an additional photoactive donor (D') is introduced by incorporating a heavy atom-containing polyoxometalate (POM) [alpha-SiW12O40](4-) into a binary {[Nibcbp(H2O)(2)](H2O)(4)Cl}(n) (Ni-bcbp, bcbp: H(2)bcbp2Cl = 1,1 '-bis(4-carboxyphenyl)(4,4 '-bipyridinium) dichloride) MOF, resulting in a semiconductive ternary D-D'-A framework {[Ni-2(bcbp)(2)(H2O)(4)(DMA)](SiW12O40)}(n) (SiW@Ni-bcbp, DMA: dimethylacetamide). The obtained material features an unprecedented porous 8-connected bcu-net structure that accommodates nanoscale [alpha-SiW12O40](4-) counterions, displaying uncommon optoelectronic responses. In contrast to binary Ni-bcbp, the SiW@Ni-bcbp framework exhibits distinctive photochromism and robust X-ray responsiveness, which can be attributed to the synergistic effects of the electron reservoir and multiple photoinduced electron transfer originating from the POMs. As a result, the X-ray detector based on SiW@Ni-bcbp demonstrates a sensitivity of 5741.6 mu C Gy(air)(-1) cm(-2) with a low detection limit of 0.49 mu Gy(air) s(-1). Moreover, the devices demonstrated the capability of producing clearness X-ray images, providing a feasible and stable solution for constructing high-performance direct X-ray detectors.

Keyword :

direct X-ray detector direct X-ray detector metal-organic framework metal-organic framework multiple electron transfer multiple electron transfer photoelectric conversion photoelectric conversion

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GB/T 7714 Wei, Qingsong , Liu, Jingyan , Wu, Liang et al. Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging [J]. | SMALL , 2024 .
MLA Wei, Qingsong et al. "Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging" . | SMALL (2024) .
APA Wei, Qingsong , Liu, Jingyan , Wu, Liang , Chen, Fuhai , Ye, Yuanji , Zhang, Shuquan et al. Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging . | SMALL , 2024 .
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Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging SCIE
期刊论文 | 2024 , 20 (40) | SMALL
Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging Scopus
期刊论文 | 2024 , 20 (40) | Small
Multiple Electron Transfer in Semiconductive Ternary D-D'-A Metal-Organic Framework for Enhanced X-Ray Detection and Imaging EI
期刊论文 | 2024 , 20 (40) | Small
Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption SCIE
期刊论文 | 2024 , 12 (24) | ADVANCED OPTICAL MATERIALS
WoS CC Cited Count: 4
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Abstract :

Chiral self-discrimination plays a critical role in supramolecular chemistry and materials science. However, an ideal strategy for achieving chiral self-discrimination remains elusive due to the inevitable nonspecific binding of incorrect enantiomers, and insufficient intrinsic optical activity of chiral molecules. Herein, a novel 1,1 '-binaphthol (BINOL) derivative with an imide group fused at the peri-position of one naphthol scaffold is developed, which combines the dual functionalities of aggregation-induced emission characteristic of BINOLs, and high emission of 1,8-naphthalimides. The multiple molecular recognition between two hydroxyl groups in BINOL units and two carbonyl groups in 1,8-naphthalimide moieties endows the precise chiral self-discrimination behaviors. As expected, the homochiral aggregates exhibit reversible phase transitions, switching from non-emission to bright green emission upon absorption and desorption of methanol vapor. In contrast, the heterochiral conglomerates exhibit irreversible yellow emission changes due to the impact of chiral self-discrimination. Such chiral self-discrimination-induced luminescence vapochromism can be further applied to high-level anti-counterfeiting and data encryption. This work provides a new perspective on smart chiral organic materials based on chiral self-discrimination. Novel binaphthol-derived imide dyes with C1 axial chirality and racemism-enhanced emission are developed, which display chiral self-discrimination-induced luminescence vapochromism for anti-counterfeiting and data encryption. image

Keyword :

aggregation-induced emission aggregation-induced emission binaphthol Imides binaphthol Imides chiral self-discrimination chiral self-discrimination data encryption data encryption luminescence vapochromism luminescence vapochromism

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GB/T 7714 Zhang, Yang , Chen, Hong-Ming , Lin, Mei-Jin . Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption [J]. | ADVANCED OPTICAL MATERIALS , 2024 , 12 (24) .
MLA Zhang, Yang et al. "Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption" . | ADVANCED OPTICAL MATERIALS 12 . 24 (2024) .
APA Zhang, Yang , Chen, Hong-Ming , Lin, Mei-Jin . Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption . | ADVANCED OPTICAL MATERIALS , 2024 , 12 (24) .
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Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption Scopus
期刊论文 | 2024 , 12 (24) | Advanced Optical Materials
Chiral Self-Discrimination Induced Luminescence Vapochromism of Binaphthol Imides for Anti-Counterfeiting and Data Encryption EI
期刊论文 | 2024 , 12 (24) | Advanced Optical Materials
KPO2(NHCONH2)2: A Promising Deep-Ultraviolet Nonlinear Optical Phosphate Containing Polar [PO2(NHCONH2)2]- Tetrahedra SCIE
期刊论文 | 2024 , 36 (6) , 2985-2992 | CHEMISTRY OF MATERIALS
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Abstract :

Phosphates are ideal candidates in the search for deep ultraviolet (DUV) nonlinear optical (NLO) materials due to their wide DUV transmission. However, the small optical anisotropy of the highly symmetric [PO4](3-) tetrahedron hinders phase matching (PM) in the DUV wavelength range. In this work, the polar tetrahedron [PO2(NHCONH2)(2)](-), which combines the pi-conjugated urea unit and the non-pi-conjugated [PO4](3-) unit via covalent bonds, is proposed as a new DUV NLO-active unit. [PO2(NHCONH2)(2)](-) tetrahedron exhibits greatly improved polarizability, anisotropy, and hyperpolarizability while maintaining a large highest occupied molecular orbital-lowest unoccupied molecular orbital gap. Accordingly, two DUV transparent alkali metal N, N-bis(aminocarbonyl)-phosphorodiamidates [A[PO2(NHCONH2)(2)] (A = K, Rb)] are screened out, and their nonlinear properties are systematically evaluated by first-principles methods. The results show that K[PO2(NHCONH2)(2)] (KPOU) achieves significant enhancements in multiple properties compared to the existing phosphate DUV NLO materials, including a strong SHG effect (3.44 x KDP) and the largest birefringence (0.088@532 nm) for DUV PM. Moreover, the shortest PM wavelength (lambda(PM)) of KPOU is 196 nm, making it a promising DUV NLO candidate for practical applications. This work proposes an excellent NLO-active unit and offers a new direction for exploring novel high-performance DUV NLO materials.

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GB/T 7714 Chen, Fuhai , Mo, Fuxiang , Chen, Hongming et al. KPO2(NHCONH2)2: A Promising Deep-Ultraviolet Nonlinear Optical Phosphate Containing Polar [PO2(NHCONH2)2]- Tetrahedra [J]. | CHEMISTRY OF MATERIALS , 2024 , 36 (6) : 2985-2992 .
MLA Chen, Fuhai et al. "KPO2(NHCONH2)2: A Promising Deep-Ultraviolet Nonlinear Optical Phosphate Containing Polar [PO2(NHCONH2)2]- Tetrahedra" . | CHEMISTRY OF MATERIALS 36 . 6 (2024) : 2985-2992 .
APA Chen, Fuhai , Mo, Fuxiang , Chen, Hongming , Lin, Mei-Jin , Chen, Yong . KPO2(NHCONH2)2: A Promising Deep-Ultraviolet Nonlinear Optical Phosphate Containing Polar [PO2(NHCONH2)2]- Tetrahedra . | CHEMISTRY OF MATERIALS , 2024 , 36 (6) , 2985-2992 .
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KPO2(NHCONH2)2: A Promising Deep-Ultraviolet Nonlinear Optical Phosphate Containing Polar [PO2(NHCONH2)2]− Tetrahedra Scopus
期刊论文 | 2024 , 36 (6) , 2985-2992 | Chemistry of Materials
KPO2(NHCONH2)2: A Promising Deep-Ultraviolet Nonlinear Optical Phosphate Containing Polar [PO2(NHCONH2)2]− Tetrahedra EI
期刊论文 | 2024 , 36 (6) , 2985-2992 | Chemistry of Materials
Low-Cost, Large-Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X-Ray Imaging SCIE
期刊论文 | 2024 , 12 (18) | ADVANCED OPTICAL MATERIALS
WoS CC Cited Count: 3
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Abstract :

The architectural design and fabrication of low-cost, high-performance organic scintillators are critical for medical imaging and material/device analysis. However, achieving large-area and high-transparency organic scintillators in a low-cost and easy-to-implement method remains a challenge. Herein, a new design strategy for regulating the side chain length of maleimide derivatives is demonstrated to develop organic scintillators for achieving low-cost, large-area, and high spatial resolution in X-ray imaging. The effective intermolecular interactions and relatively twisted molecular structure endow PAM-M4 molecule with outstanding scintillator properties. More importantly, as demonstrated for the first time, pure organic glassy films with a diameter over 10 cm and high optical transparency can be prepared by the developed melt-quenched method using PAM-M4 crystal powder as a raw material. This glassy film exhibits excellent X-ray imaging ability with a spatial resolution as high as 27.0 lp mm-1 at MTF = 0.20, which is one of the best results among reported organic scintillators. The results of this work not only develop a new design strategy for high-performance organic scintillators but also demonstrate a reliable approach to fabricating large area screens with superior spatial resolution for medical or industrial X-ray imaging applications. A maleimide-based scintillator can be easily synthesized and exhibits a fast scintillation decay time of 12.38 ns, a high PLQY of 87.6%, and a low detection limit of 0.14 mu Gy s-1. By using the melt-quenched method, PAM-M4 crystal can turn into a large-area glassy film. This glassy film exhibits a transmittance of over 90%, along with a resolution of 27.0 lp mm-1 for X-ray imaging, which represents the state-of-the-art performance for organic scintillators. image

Keyword :

fluorescence fluorescence maleimide derivatives maleimide derivatives organic glassy scintillators organic glassy scintillators X-ray imaging X-ray imaging

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GB/T 7714 Quan, Xin , Zhang, Guo-Zhen , Zhang, Yang et al. Low-Cost, Large-Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X-Ray Imaging [J]. | ADVANCED OPTICAL MATERIALS , 2024 , 12 (18) .
MLA Quan, Xin et al. "Low-Cost, Large-Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X-Ray Imaging" . | ADVANCED OPTICAL MATERIALS 12 . 18 (2024) .
APA Quan, Xin , Zhang, Guo-Zhen , Zhang, Yang , Liao, Qing , Chen, Hong-Ming , Lin, Mei-Jin . Low-Cost, Large-Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X-Ray Imaging . | ADVANCED OPTICAL MATERIALS , 2024 , 12 (18) .
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Low‐Cost, Large‐Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X‐Ray Imaging
期刊论文 | 2024 , 12 (18) , n/a-n/a | Advanced Optical Materials
Low-Cost, Large-Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X-Ray Imaging EI
期刊论文 | 2024 , 12 (18) | Advanced Optical Materials
Low-Cost, Large-Area, and Highly Transparent Organic Glassy Scintillators for High Resolution X-Ray Imaging Scopus
期刊论文 | 2024 , 12 (18) | Advanced Optical Materials
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