Query：
学者姓名：陈勇
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
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
Cite：
Copy from the list or Export to your reference management。
| 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 . |
| 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 (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 . |
| Export to | NoteExpress RIS BibTex |
Version ：
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
Cite：
Copy from the list or Export to your reference management。
| 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) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Rylene diimides are an attractive class of organic dyes owing to their exceptional optical properties and optoelectronic applications. Herein, we extend their applications to the realm of X-ray imaging. The emissive 1,1′-bi(2-naphthol-4,5-dicarboximide) (BiND-OH) and its phenyl/methyl derivatives, BiND-OPh and BiND-OMe, have been selected to investigate the structure-activity relationships between their crystal packing and X-ray scintillation properties. Single crystal X-ray diffraction results indicate that BiND-OH forms a tightly structured conformation with two interlocks by hydrogen bonding, leading to a charge transfer state and resulting in nearly non-scintillation. In contrast, the radioluminescence intensities of BiND-OPh and BiND-OMe have increased by about 73 and 537 times, respectively, owing to the disruption of hydrogen bonding control and the formation of a J-aggregation fraction dominated by π-π interactions. Remarkably, BiND-OMe displays superior scintillation properties, marked by reduced non-radiative transitions, attributed to greater π-π plane distances, extended slip distances, and diminished π-plane overlap areas. It demonstrates a low detection limit of 70.68 nGy s−1 and a short decay time of 4.37 ns. When applied to X-ray imaging, it produces a high spatial resolution of 11.0 lp mm−1. This finding provides valuable insights into the profound impact of molecular structure and aggregation state on the organic scintillation properties. (Figure presented.) © Science China Press 2024.
Keyword ：
crystal packing crystal packing fluorescence fluorescence molecular structures molecular structures organic scintillators organic scintillators X-ray imaging X-ray imaging
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, J. , Liu, G. , Chen, F. et al. Binaphthol diimide scintillators for X-ray imaging; [用于X射线成像的联萘酚二酰亚胺闪烁体] [J]. | Science China Materials , 2024 , 67 (8) : 2583-2589 . |
| MLA | Chen, J. et al. "Binaphthol diimide scintillators for X-ray imaging; [用于X射线成像的联萘酚二酰亚胺闪烁体]" . | Science China Materials 67 . 8 (2024) : 2583-2589 . |
| APA | Chen, J. , Liu, G. , Chen, F. , Chen, Y. , Fang, X. , Chen, H. et al. Binaphthol diimide scintillators for X-ray imaging; [用于X射线成像的联萘酚二酰亚胺闪烁体] . | Science China Materials , 2024 , 67 (8) , 2583-2589 . |
| Export to | NoteExpress RIS BibTex |
Version ：
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 {[Ni center dot bcbp center dot(H2O)(2)] center dot(H2O)(4) center dot Cl}(n) (Ni-bcbp, bcbp: H(2)bcbp center dot 2Cl = 1,1'-bis (4-carboxyphenyl)(4,4'-bipyridinium) dichloride) MOF, resulting in a semiconductive ternary D-D'-A framework {[Ni-2(bcbp)(2) center dot(H2O)(4) center dot(DMA)] center dot(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
Cite：
Copy from the list or Export to your reference management。
| 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 , 20 (40) . |
| 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 20 . 40 (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 , 20 (40) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Rylene diimides are an attractive class of organic dyes owing to their exceptional optical properties and optoelectronic applications. Herein, we extend their applications to the realm of X-ray imaging. The emissive 1,1 '-bi(2-naphthol-4,5-dicarboximide) (BiND-OH) and its phenyl/methyl derivatives, BiND-OPh and BiND-OMe, have been selected to investigate the structure-activity relationships between their crystal packing and X-ray scintillation properties. Single crystal X-ray diffraction results indicate that BiND-OH forms a tightly structured conformation with two interlocks by hydrogen bonding, leading to a charge transfer state and resulting in nearly non-scintillation. In contrast, the radioluminescence intensities of BiND-OPh and BiND-OMe have increased by about 73 and 537 times, respectively, owing to the disruption of hydrogen bonding control and the formation of a J-aggregation fraction dominated by pi-pi interactions. Remarkably, BiND-OMe displays superior scintillation properties, marked by reduced non-radiative transitions, attributed to greater pi-pi plane distances, extended slip distances, and diminished pi-plane overlap areas. It demonstrates a low detection limit of 70.68 nGy s(-1) and a short decay time of 4.37 ns. When applied to X-ray imaging, it produces a high spatial resolution of 11.0 lp mm(-1). This finding provides valuable insights into the profound impact of molecular structure and aggregation state on the organic scintillation properties.
Keyword ：
crystal packing crystal packing fluorescence fluorescence molecular structures molecular structures organic scintillators organic scintillators X-ray imaging X-ray imaging
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Jingru , Liu, Guangsheng , Chen, Fuhai et al. Binaphthol diimide scintillators for X-ray imaging [J]. | SCIENCE CHINA-MATERIALS , 2024 , 67 (8) : 2583-2589 . |
| MLA | Chen, Jingru et al. "Binaphthol diimide scintillators for X-ray imaging" . | SCIENCE CHINA-MATERIALS 67 . 8 (2024) : 2583-2589 . |
| APA | Chen, Jingru , Liu, Guangsheng , Chen, Fuhai , Chen, Yong , Fang, Xin , Chen, Hongming et al. Binaphthol diimide scintillators for X-ray imaging . | SCIENCE CHINA-MATERIALS , 2024 , 67 (8) , 2583-2589 . |
| Export to | NoteExpress RIS BibTex |
Version ：
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
Cite：
Copy from the list or Export to your reference management。
| 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 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Organic thermally activated delayed fluorescent (TADF) scintillators hold promising potential for applications in medical radiography and security detection, but the poor X-ray absorption ability and inferior radioluminescence (RL) hampered their progression. Herein, the study has pioneered the development of high-performance TADF Ag(I)-based scintillators from M2X2(dppb)2 (M = Ag, Cu; X = Cl, Br, I) complexes with 1,2-Bis(diphenylphosphino)benzene (dppb) ligand. In comparison with Cu(I) complexes, the Ag(I) series generally exhibited superior scintillation performance. Notably, Ag2Cl2(dppb)2 (Ag1) stands out with exceptionally high RL intensity (approximate to 125% higher than that of CsI:Tl) and a low detection limit of 59.8 nGy s-1. The outstanding scintillation performance of Ag1 is primarily attributed to the synergistic effect of the high exciton utilization efficiency origin from a small singlet-triplet energy gap, enhanced X-ray absorption capacity by heavy atoms, and the high photoluminescence quantum yield (76.47% in ambient atmosphere). By fabricating a flexible film constructed with Ag1 submicron crystalline powders, a high spatial resolution of 25.0 lp mm-1 for X-ray imaging is obtained. It offers new opportunities for utilizing TADF metal-organic complexes for highly efficient X-ray scintillation and imaging. Scintillators with good radioluminescence performance are prepared by combining the TADF mechanism to optimize the utilization of triplet excitons, coupled with increased X-ray absorption through heavy atoms, verifying the advantages of Ag(I)-halide complexes on radioluminescence. Besides, the influence of halogens on photoluminescence and radioluminescence are investigated. As a practical application, Ag2Cl2(dppb)2 is applied to fabricate flexible scintillator films, achieving high-resolution imaging of 25 lp mm-1. image
Keyword ：
scintillators scintillators silver-based complexes silver-based complexes thermally activated delayed fluorescence thermally activated delayed fluorescence X-ray imaging X-ray imaging
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Yuan, Siqi , Zhang, Guozhen , Chen, Fuhai et al. Thermally Activated Delayed Fluorescent Ag(I) Complexes for Highly Efficient Scintillation and High-Resolution X-Ray Imaging [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (33) . |
| MLA | Yuan, Siqi et al. "Thermally Activated Delayed Fluorescent Ag(I) Complexes for Highly Efficient Scintillation and High-Resolution X-Ray Imaging" . | ADVANCED FUNCTIONAL MATERIALS 34 . 33 (2024) . |
| APA | Yuan, Siqi , Zhang, Guozhen , Chen, Fuhai , Chen, Jingru , Zhang, Yang , Di, Yiming et al. Thermally Activated Delayed Fluorescent Ag(I) Complexes for Highly Efficient Scintillation and High-Resolution X-Ray Imaging . | ADVANCED FUNCTIONAL MATERIALS , 2024 , 34 (33) . |
| Export to | NoteExpress RIS BibTex |
Version ：
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.
Cite：
Copy from the list or Export to your reference management。
| 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 . |
| Export to | NoteExpress RIS BibTex |
Version ：
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
Cite：
Copy from the list or Export to your reference management。
| 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) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Organic fluorescence scintillators, owing to the ultrafast response time, versatile chemical structures, low processing temperature, and low cost, are considered as one of the promising materials for medical diagnostics, radiation detection, and X-ray astronomy. However, the low radioluminescence (RL) intensity and low sensitivity hinder their practical applications. In this work, a highly efficient organic fluorescent scintillator, 4,4 '-bis(9-carbazolyl)biphenyl (CBP), is presented, exhibiting a high X-ray RL intensity, narrow full width at half-maximum of 49 nm, and ultrafast decay time of 1.15 ns. More importantly, it has a low detection limit of 25.5 nGy s(-1), which is only 1/215 dose rate compared with the commercial X-ray diagnostics. Such an excellent scintillation performance is mainly attributed to its high photoluminescence quantum yield (PLQY = 61.92%) and good carrier transport (average hole mobility of 0.094 cm(2) V-1 s(-1)). By mixing the CBP into polydimethylsiloxane, the fabricated large area flexible film can be applied in X-ray radiography, which exhibits a high spatial resolution of 14.3 lp mm(-1) at MTF > 0.2. This work paves a way for the implementation of organic fluorescence dyes with high PLQY, high carrier mobility in efficient X-ray scintillation and imaging.
Keyword ：
carbazole derivatives carbazole derivatives fluorescence fluorescence organic scintillators organic scintillators X-ray imaging X-ray imaging
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Hongming , Lin, Miao , Zhao, Changbin et al. Highly Efficient, Low-Dose, and Ultrafast Carbazole X-Ray Scintillators [J]. | ADVANCED OPTICAL MATERIALS , 2023 , 11 (10) . |
| MLA | Chen, Hongming et al. "Highly Efficient, Low-Dose, and Ultrafast Carbazole X-Ray Scintillators" . | ADVANCED OPTICAL MATERIALS 11 . 10 (2023) . |
| APA | Chen, Hongming , Lin, Miao , Zhao, Changbin , Zhang, Dongwei , Zhang, Yang , Chen, Fuhai et al. Highly Efficient, Low-Dose, and Ultrafast Carbazole X-Ray Scintillators . | ADVANCED OPTICAL MATERIALS , 2023 , 11 (10) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
