CRYSTAL GROWTH & DESIGN
·
2019
·
IF 4.153
Pifu Gong,Yi Yang,Fengguang You,Xinyuan Zhang,Gaomin Song,Shengzi Zhang,Qian Huang,Zheshuai Lin
The alkali metals Rb+ and Cs+ involving structural evolution from centrosymmetric (CS) to noncentrosymmetric (NCS) is investigated in the ASbF3Cl compounds. RbSbF3Cl crystallizes in the orthorhombic centrosymmetric space group of Pbca, whereas CsSbF3Cl crystallizes in the tetragonal noncentrosymmetric space group of I4̅2m, although they both consist of [SbF3Cl2] units and alkali metal cations. The CS to NCS evolution is originated from the structural dimensional reduction owing to the accommodation of the relatively larger alkali metal cations. RbSbF3Cl and CsSbF3Cl are stable under 195 and 205 °C, respectively, and their energy band gaps are about 3.30 and 3.05 eV. Powder second harmonic generation (SHG) measurements show that CsSbF3Cl is phase-matchable with a response of 0.3 times that of KH2PO4. Moreover, first-principles calculations are performed to investigate the origin of SHG effects in CsSbF3Cl.
研究领域:
无机化学
·
材料科学
·
晶体学
·
非线性光学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 24
·21119-21129
·
IF 2.324
Dong Jian,Xiao Peng,Zhang Dongyun,Chang Chengkang
Rubidium modified Ni-rich LiNi 0.8 Co 0.15 Al 0.05 O 2 cathode materials were successfully synthesized through a nano-milling assisted solid-state method. Rietveld refinement revealed that the Rb ions were incorporated into the lattice by replacing the original Li ions. It resulted in the enlarging of Li layer spacing together with the reducing of the thickness of the transition metal slab. Such changes in crystal structure led to the increase in the diffusion coefficient of Li ions in the lattice (D Li ). Calculated diffusion coefficient presented the highest Li-ion diffusion coefficient of 1.54 × 10 −10 cm 2 s −1 for the sample Rb 0.01 Li 0.99 Ni 0.8 Co 0.15 Al 0.05 O 2 . It was also in good accordance with the changes in Li slab thickness. Improved electrochemical performance in specific capacity, capacity retention and rate performance were observed. Among the samples synthesized, the Rb 0.01 Li 0.99 Ni 0.8 Co 0.15 Al 0.05 O 2 sample exhibited the highest initial discharge capacity and the best rate performance. It delivered specific discharge capacities of 190.5, 177, 169, 161 and 151 mAh g −1 at 0.1C, 0.2C, 0.5C, 1C and 5C, respectively. It also showed the best cycle stability with capacity retention of 91.31% after 100 cycles at 2C.
研究领域:
材料科学
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电化学
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储能
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电池技术
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Jingyi He,Shimin Liu,Jianmin Gu,Shiqing Xu
All-inorganic lead halide perovskite quantum dots (CsPbX3 QDs, X = Cl, Br, I) glass has elicited extensive attention due to its excellent stability. However, the realization of CsPbX3 QDs glasses with a high photoluminescence quantum yield (PLQY) remains a challenging task. In this study, Eu3+ ions act as nucleating agents to promote the formation and crystallization of CsPbBr3 QDs. Rb+ ions further improve the crystallization quality and reduce the defects between CsPbBr3 QDs and the glass interface. The codoping of Eu3+ and Rb+ ions greatly improved the PLQY of CsPbBr3 QDs. The highest PLQY is achieved in the 0.33Rb-2Eu heat-treated at 500 °C–6 h, reaching 54%. Furthermore, among the light-emitting diodes (LEDs) prepared with 1Cs-0Eu, 1Cs-2Eu, or 0.33Rb-2Eu, 0.33Rb-2Eu has the highest color gamut coverage (108.9% of the National Television Standards Committee color gamut and 92.7% of Rec. 2020 color gamut at 20 mA) and the strongest durable high-power driving capability, making it an ideal material for green LEDs.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2016
·Vol. 43
·期 1
·341-352
·
IF 1.833
Sun Guangyao,Li Wenjing,Ji Shidong,Cao Xun,Jin Ping
Methanol was used to optimize the solid-state synthesizing method of alkali metavanadates AVO 3 (A = Rb, Cs) for the first time and the benefits are discussed. Due to the optimization, four kinds of heterogeneous AVO 3 compounds, white CsVO 3 [CsVO 3 (W)], yellow CsVO 3 [CsVO 3 (Y)], white RbVO 3 [RbVO 3 (W)], and red RbVO 3 [RbVO 3 (R)], could be easily obtained. The colored compounds CsVO 3 (Y) and RbVO 3 (R) are reported for the first time and their synthetic process has been summarized, while their crystal structure, morphology, vibration spectroscopy, photoluminescence, moisture adsorption and thermodynamic properties were measured and compared to white compounds. The differences in properties of CsVO 3 (Y) and RbVO 3 (R) were hypothesized as the oriented growth and induced defects. All four AVO 3 compounds were excellent white-light-emitting phosphors, and CsVO 3 (Y) and RbVO 3 (R), with additional waterproofness, suggested much more practical value.
研究领域:
无机化学
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材料科学
·
固体化学
·
发光材料
·
物理化学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 51
·期 4
·1481-1488
·
IF 4.39
Maierhaba Abudoureheman,Juanjuan Zheng,Peng Wang,Bo Wei,Zhiyong Guo,Zhaohui Chen,Yanna Chen
The exploration of A–Mo–P–O (A = Rb, Cs) systems has allowed several new Mo(V) phosphates, Rb2MoP2O9, Rb6Mo2P4O19 and Cs6Mo2P4O19, to be synthesized through the spontaneous nucleation method. Single-crystal X-ray diffraction analysis reveals that the identical stoichiometry compounds Rb2MoP2O9 and Cs2MoP2O9 belong to different space groups C2/c and Pbca, respectively. Both compounds consist of dissimilar 1D [Mo–O–P]∞ chains with different repeated building units, while monovalent cations fill in spaces to form 3D structures. However, Rb6Mo2P4O19 and Cs6Mo2P4O19 are isostructural and crystallize in the same space group of P21/c. They exhibit a 3D framework structure with 0D Mo2O5O6P4O8 groups, which are separated by Rb/Cs atoms. Interestingly, structural relationships between the different monophosphates of the A–Mo–P–O (A = Rb, Cs) systems are presented in which distinct polyanionic configurations appear owing to the A/P ratios, as well as the size of the univalent cations. Further, detailed structural comparisons, optical properties and theoretical calculations are also discussed.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Xingwen Liu,Qi Wang,Zhuo Wang,Xueting Liu,Minghui Zhang,Jiahui Fan,Zhiyong Zhou,Zhongqi Ren
A new type of Rb(I) ion imprinting material was prepared with methacrylic acid as functional monomer, Rb(I) ion as template, and methanol/acetonitrile as solvent. The polymerization reaction was initiated by N,N-azobis(isobutyronitrile) (AIBN) with the cross-linking by ethylene glycol dimethacrylate (EGDMA). In addition, benzo-12-crown-4-ether (B12C4) was introduced as a ligand to fix the template ions better. Scanning electron microscope, Zeta potential analysis, Fourier transform infrared spectrum, thermogravimetric analysis, and energy dispersive spectra were used for characterization of the imprinted polymer. Effects of preparation and adsorption conditions on adsorption performances of Rb(I) ion-imprinted polymers (IIPs) were investigated. The imprinted polymer had fast adsorption kinetics (reaching equilibrium within 15 min) and high maximum adsorption capacity (129.9 mg·g–1) at pH 9.5. Besides, the adsorption process conformed to pseudo-second-order kinetic and Freundlich isotherm models. Moreover, the prepared Rb(I)-IIPs showed high selectivity for Rb(I) ions. The results of eight repeated cycles of adsorption–desorption demonstrated that the prepared Rb(I)-IIPs had good stability and reusability.
研究领域:
化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Xuanming Zhang,Ronggan Lu,Xiaochen Fang,Chenfeng Lin,Yongfeng Liu,Yanqiao Ding,Dongdong Yan,Xiaoyu Wang,Hao Xie,Cheng Wang,Weixiang Ye
The unique combination of strong excitonic properties and environmental stability in 0D copper halide crystals motivates the development of scalable ambient fabrication routes for high-quality emitters. Here, we report a low-temperature solvent vapor-assisted crystallization strategy to grow millimeter-sized Cs 3 Cu 2 I 5 crystals. Rb + doping effectively passivates surface defects, markedly enhancing moisture and ambient stability, with the photoluminescence intensity remaining nearly unchanged after 60 days in air. Notably, the 10% Rb + -doped crystals achieve a high photoluminescence quantum yield (PLQY) of 98.42%, demonstrating a pronounced emission enhancement. Ab initio molecular dynamics (AIMD) simulations reveal that both pristine and 10% Rb + -doped structures reside in a similar energy window (−108 to −110 eV), while the doped system exhibits a more confined trajectory, suggesting a flattened energy landscape and suppressed defect formation. Doped lattice relaxations induce slight, direction-dependent bond contraction, improving coordination integrity without major distortion, consistent with material stability and device reliability. By integrating blue-emitting Cs 3 Cu 2 I 5 :10% Rb + with green Cs 3 Cu 2 Cl 5 and red CaAlSiN 3 :Eu 2+ , we fabricate high-performance white light-emitting diodes (WLEDs) achieving CRI of 95.36, CIE chromaticity coordinates of (0.30, 0.34), and outstanding luminance of 17734.5 cd/m 2 . These findings establish a versatile ambient pathway for defect-engineered Cs 3 Cu 2 X 5 (X = I, Cl) emitters, advancing their prospects for next-generation solid-state lighting technologies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Guobiao Cen,Haigang Sheng,Zhengxuan Wang,Ling Yi,Hengchao Sun,Yipeng An,Chuanxi Zhao,Wenjie Mai
Bismuth-based double perovskite Cs 2 AgBiBr 6 shows promise as a photodetection material. However, its detection performance and application are limited by high-exciton binding energy and poor carrier mobility. In this study, we address these limitations by delicately designing a solution-based method for incorporating A-site Rubidium (Rb) substitution into Cs 2 AgBiBr 6 double perovskite films. The introduction of Rb resulted in a significant decrease in trap defect density and an improvement in film quality. The trap-filled limit voltage (V TFL ) of pure and Rb-doped CABB film is determined to be 1.71 V and 0.48 V, respectively. Subsequently, by introducing an ultrathin atomic-layer-deposited (ALD) TiO 2 films, the fabricated CABB photodetectors exhibit significantly improved photoresponse performance. The response speed and −3dB bandwidth are boosted from ∼93 ms to ∼350 μs and broadened from 1.4 kHz to 17 kHz, respectively. Density Functional Theory (DFT) calculations indicate Rb-substitution shortens the bond length and weaken exciton binding energy. Furthermore, we demonstrate a wireless near ultraviolet (UV) light communication system using CABB photodetectors as light receivers. Our findings provide an efficient approach to utilize A-site cation substitution as a tuning parameter for photodetection in high-exciton binding energy perovskite materials, thereby extending the potential applications of other functional perovskites .
研究领域:
材料科学
·
光子学
·
半导体物理
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Hao Hu,Jianping Yang,Junfeng Chen,Jiaxuan Hao,Ping Lin,Lingbo Xu,Peng Wang,Xiaoping Wu,Tiantian Liu,Can Cui
Perovskite single crystals offer superior optoelectronic properties but face challenges in spectral response range and device performance. Here, we report a high-performance photodetector based on Rb-doped MAPbBr 3 /MAPbI 3 heterojunction fabricated via liquid-phase epitaxy. Systematic characterization reveals that Rb + incorporation effectively reduces defect density (from 3.02 × 10 9 to 2.48 × 10 9 cm −3 ) and prolongs carrier lifetime (from 12.09 ns to 145.41 ns), while the integration with MAPbI 3 microcrystals extends the spectral response range from the green to the red region (450–750 nm). DFT calculations and UPS reveal that Rb doping tailors the electronic structure of MAPbBr 3 , optimizing band alignment with MAPbI 3 to enhance built-in field for charge separation while increasing work function to suppress dark current. Consequently, the Rb-doped heterojunction device achieves an order-of-magnitude enhancement in both responsivity (600 m A/W) and detectivity (~2.5 × 10¹² Jones), together with excellent operational and environmental stability (retaining >70% performance after 90 days in air), and a fast response time of 6.29 μs. This work establishes Rb doping as an effective strategy integrating defect passivation and band engineering for high-performance perovskite photodetectors.
✓ 已验证
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Jiawen Li,Feifei Huang,Youjie Hua,Bingpeng Li,Shiqing Xu,Ruoshan Lei
In an effort to obtain a novel cyan-emitting phosphor, the [K 1-x Rb x ] 3 GdSi 2 O 7 : yCe 3+ materials (x = 0, 0.1, 0.2, 0.3, 0.4, y = 0, 0.005, 0.01, 0.02, 0.03, 0.04) are synthesized via a solid-state reaction pathway, and their crystal structure and luminescence behaviors are studied systematically. The chemical substitution of Rb + in the K + sites can enlarge the K 3 GdSi 2 O 7 host lattice and help to the blue-shifting of emission band of Ce 3+ ions due to the decreased crystal field splitting effect. It is also confirmed that the Ce 3+ ions tend to enter [Gd1O 6 ] and [Gd 2 O 6 ] polyhedrons simultaneously. Consequently, the [K 0.7 Rb 0.3 ] 3 GdSi 2 O 7 : Ce 3+ phosphor yields a broadband cyan emission centered at 492 nm with the full width at half maximum (FWHM) of ∼115 nm upon 365 nm excitation. The optimal concentration of Ce 3+ dopant is determined to be 0.01, and the concentration quenching effect can be attributed to the dipole−dipole interactions. The white light emitting diode (WLED) device fabricated by employing the discovered [K 0.7 Rb 0.3 ] 3 GdSi 2 O 7 : 0.01Ce 3+ phosphor displays a high color rendering index (R a = 91.7) and a low correlated color temperature (CCT = 3749 K). This work may promote the development of cyan phosphors for near ultraviolet-converted WLEDs with high performance.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Microbiology
·
2026
·
IF 5.8
Yinhui Lin,Yufei Jiang,Shan Zhang,Ziyuan Zhang,Shaoya Liu,Jinru Lin,Xiaoxiao Chen,Yuchen Zhang,Yonghui Yu,Wenbo Wei,Xuan OuYang,Xinan Huang,Yajun Song,Jun Jiao
Chlamydia psittaci is an obligate intracellular pathogen that poses a significant threat to both human and animal health. The current therapeutic strategies are limited by the emergence of potential drug resistance, underscoring the urgent need for novel anti-chlamydial agents. In this study, we evaluated the anti-chlamydial activity of kaempferol, a natural occurring flavonoid. Potential targets of kaempferol and C. psittaci infection-related targets were identified through in silico screening. In cellular assays using both HeLa and THP-1 cells, kaempferol treatment significantly inhibits the intracellular growth of C. psittaci in a dose-dependent manner, while showing no host cell cytotoxicity at effective concentrations. Based on prior in silico virtual screening and our group’s systematic evaluation of the anti-chlamydial activity of flavonoids, kaempferol (40 μM) was selected as the target compound for this study due to its potent antimicrobial effects and its potential to modulate key host–pathogen interaction pathways. Mechanistic investigations revealed that kaempferol interferes with the trafficking of host-derived lipid to the bacterial inclusion, thereby depriving the pathogen of essential nutrients. Moreover, kaempferol treatment severely disrupted the normal differentiation of reticulate bodies (RBs) into infectious elementary bodies (EBs), resulting in an aberrant developmental cycle and a reduction in the production of new infectious progeny. This study demonstrates that kaempferol exerts anti-chlamydial activity by targeting two key processes of C. psittaci infection: lipid trafficking to inclusions and RB-EB conversion. These results highlight kaempferol as a promising lead compound for developing new therapeutic approaches against C. psittaci infections.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2020
·Vol. 8
·期 6
·1468-1475
·
IF 5.958
Ying Hou,Bingbing Zhang,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
Borophosphates are of current interest and great importance as ultraviolet (UV) and deep-UV optical functional materials. However, most of the borophosphates exclusively contain tetrahedral coordination of B and P atoms, i.e. BO4 and PO4. Few compounds contain mixed-coordinated groups, i.e. BO4, BO3 and PO4. A new strategy of large B/P ratios has been suggested to effectively synthesize three mixed-coordinated borophosphates, K3B4PO10 and K2MB4PO10 (M = Rb/Cs). Their structures all show 2D 2∞[B4PO10]3− sheets, which are separated by the alkali metal cations. The thermal behavior measurements indicate that K3B4PO10 and K2MB4PO10 (M = Rb/Cs) melt congruently and a crystal of K3B4PO10 with a size up to 4 × 2 × 1 mm3 has been grown. Property measurements show that they all possess deep-ultraviolet (UV) cut-off edges and a relatively large birefringence and are potential deep-UV birefringent crystals. In particular, the measured birefringence of K3B4PO10 is about 0.0445@532 nm, which is the largest in borophosphates with reported birefringence. This study indicates that B-rich borophosphates are promising systems to synthesize materials with large birefringence.
研究领域:
材料科学
·
光学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）