JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2024
·
IF 2
Yueheng Wang,Ziyu Zhuang,Yanfei Fan,Dandan Gao,Dongdong Li
Ammonium ion is of the same charge as alkali ions and with similar ionic radius as potassium, rubidium, and cesium ions. Solid solutions are very common between ammonium and alkali salts, which is of great interest for understanding the geology, soil, and environment fate of these elements. In this study, the solid–aqueous equilibrium in the NH4Cl + RbCl + H2O and NH4Cl + CsCl + H2O systems was determined at 298.15 K. For each system, two incontinuous solid solutions, i.e. (NH4,Rb)Cl(α) and (Rb,NH4)Cl(β), or (Cs,NH4)Cl(α) and (NH4,Cs)Cl(β), presented, and their composition and structure were studied using Schreinemakers’ wet residues analysis, XRD, and Raman characterization. The equilibrium between these solid solutions and aqueous solutions were well modeled using an integrated solution equilibrium calculator program, in which a Pitzer-Simonson-Clegg model and a subregular model were implemented for describing the nonideality of aqueous phase and solid solution. According to the experimental and thermodynamic modeling results, NH4Cl can dissolve RbCl and CsCl in the solid state (NH4,Rb)Cl(α) or (NH4,Cs)Cl(β) with limited solid solubilities of 0.18 or 0.051 in mole fraction, respectively. RbCl or CsCl can also dissolve NH4Cl in the solid state (Rb,NH4)Cl(β) or (Cs,NH4)Cl(α) with limited solid solubilities of 0.37 and 0.095 in mole fraction, respectively.
研究领域:
化学
·
环境科学
·
地质学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2022
·
IF 3.269
Ziyu Zhuang,Dongdong Li,Yanfei Fan,Dandan Gao,Dewen Zeng
The construction of a comprehensive thermodynamic model for boron-containing salt brine is important. However, the general lack of the solubility of H 3 BO 3 + salt + H 2 O ternary systems makes it difficult to determine model parameters involving boron species. Here, we systematically determined the solubility isotherms of the H 3 BO 3 + CsCl + H 2 O system at T = (273.15, 298.15, 323.15, 348.15 and 363.15) K. There are three solubility branches corresponding to H 3 BO 3(cr) , CsCl (cr) and a novel adduct in the system. The determined composition of the adduct is 2H 3 BO 3 ·3CsCl. Moreover, the single crystal structure of 2H 3 BO 3 ·3CsCl is solved, suggesting that H 3 BO 3 molecules keep it native plane-triangle structure, but the O atoms coordinate to the Cs ion. We modeled these ternary solubility isotherms using the Pitzer-Simonson-Clegg (PSC) model implemented in the ISLEC program. With the help of the model, a complete polythermal phase diagram of the system was constructed for the temperature range from 250 K to 373.15 K. The determined standard thermodynamic quantities of 2H 3 BO 3 ·3CsCl (cr) from the model are Δ f G m Θ = − 3182.26 kJ∙mol −1 , Δ f H m Θ = − 3496.19 kJ∙mol −1 , S m Θ = 485.85 J∙K −1 ∙mol −1 , C p , m Θ = 320 J∙K −1 ∙mol −1 , respectively.
研究领域:
化学
·
物理化学
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2025
·
IF 14.1
Xinmiao Li,Ying Li,Huifang Jiang,Yancheng Chen,Zhuangzhuang Ma,Zhifeng Shi,Di Chen,Guozhen Shen
All-optically controlled artificial synapses for neuromorphic vision offer unique advantages in simplifying circuit design and minimizing power consumption, meeting the application demands of the current artificial intelligence era. However, developing all-optically controlled devices that combine high performance and high reproducibility remains a significant challenge. In this work, we demonstrate an all-optically controlled artificial synapse based on ZnO and Cs 2 CoCl 4 single crystal connected structure, which integrates light information sensing and processing capabilities. Relying on the simple series-connected structure, as well as the positive photoconductance of ZnO and the negative photoconductance of Cs 2 CoCl 4 , the optically controlled bidirectional synaptic plasticity is realized under ultraviolet and visible light stimulation without additional voltage modulation in the all-optically controlled synapse. In addition, leveraging its ultraviolet-enhanced feature extraction and visible-suppression capabilities, the all-optically controlled synapse can act as denoising units in bioinformation preprocessing and weight-updating units in feature recognition. The proposed all-optically controlled synapses exhibit excellent information perception, low-level noise reduction, and high-level cognition functions for bioinformation recognition under complex light conditions. We believe that this work can provide structural-level insights and inspirations in the design and fabrication of all-optically controlled synapses to promote the application for efficient neuromorphic vision in the future.
✓ 已验证
产品关联
DOI
高影响因子
Physica Status Solidi-Rapid Research Letters
·
2023
·Vol. 18
·期 2
·2300350
·
IF 2.8
Xueqing Ma,Tianrui Zhou,Yunluo Wang,Jianghua Wu,Zesheng Pan,Yuntian Fu,Jingshan Hou,Wan Jiang,Lianjun Wang,Haijie Chen
Copper halides have attracted extensive interest because of the merits of environmental friendliness, low lost, and superior optoelectronic properties. However, the stability issue heavily hinders their commercial application. Herein, the successful synthesis of copper chlorine in glass using melting-quenching method under vacuum condition is reported. By introducing CuCl into the glass matrix (CuCl@glass), the as-fabricated samples emit white or yellow light, which depends on the ratios of CuCl:glass. The maximum values of the photoluminescence quantum yield are found to be 37% and 26%, respectively. With the addition of CsCl, CsCu 2 Cl 3 , and Cs 3 Cu 2 Cl 5 phases form in the glass, leading to the phosphor-in-glass which emits green light. A maximum luminous yield of 74% is achieved. Based on the synthesized samples, light-emitting diodes are successfully prepared by the remote packaging technology, and the utilization of the as-obtained composites for anticounterfeiting application is realized. Herein, an effective approach for the preparation of lead-free halide perovskite@glass composites is provided, opening up potential commercial applications.
研究领域:
材料科学
·
光电
·
光子学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2025
·Vol. 54
·期 30
·11601-11606
·
IF 3.3
Guansong Zheng,Wang Zhao,Xiaoyu Wu,Hongshan Wang,Yinxia Du,Juanjuan Lu,Xiao-dong Zhou,Junjie Li
Chalcohalides, combining the structural and property advantages of chalcogenides and halides, have been demonstrated to be a promising system for the design of advanced photoelectric functional materials. Herein, a new chalcohalide compound, Cs9Si8Se20Cl, has been rationally designed by introducing a nonlinear optical (NLO)-active [Si4Se10] T2-supertetrahedral unit into a halide system and synthesized experimentally by the flux method with CsCl as the flux. The compound is composed of [CsSe7Cl] polyhedral, [CsSe6] octahedral, and [Si4Se10] T2-supertetrahedral units. To the best of our knowledge, the [CsSe7Cl] mixed anionic unit appears for the first time in the compound, and the rare [Si4Se10] T2-supertetrahedral unit has been demonstrated to be a potential NLO-active unit for the design of infrared NLO materials with balanced optical properties. The theoretical calculations uncovered that the strong orbital hybridization between Si-3p, Se-4p and Cl-3p orbitals results in a wide band gap of 3.075 eV in the title compound. The results enrich the structural diversity of chalcohalide compounds and provide valuable insights into the design of wide band gap selenides.
研究领域:
材料化学
·
无机化学
·
光学材料
·
固态化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry Letters
·
2025
·
IF 4.6
Ronghuan Liu,Zhaojin Wang,Zi-Wei Zheng,Xiaobing Tang,Renjun Guo,Xuanyu Zhang,Peter Müller-Buschbaum,Hai Zhou,Kai Wang,Xiao Wei Sun
Methylammonium lead chloride perovskite (MAPbCl3), with its wide bandgap of ∼3 eV, exhibits unique advantages for near-UV to UV optoelectronic devices. However, the fast crystallization kinetics and significant solubility differences of MAPbCl3 precursors in solvents cause discontinuous films with high surface defect densities, severely limiting device performance. This study introduces a solution mediated dissolution recrystallization strategy to address the aforementioned issues, namely, employing a CsAc/methanol solution to dynamically reconstruct preformed MAPbCl3 films. During this process, Cs+ doping regulates the crystallization kinetics and suppresses the formation of pinholes caused by nonequilibrium crystallization, and Ac– anions passivate grain boundaries and surface defects through coordination. This synergistic approach yields dense, high-quality Cs0.35MA0.65PbCl3 polycrystalline films. The resulting self-powered photodetector demonstrates exceptional performance under 405 nm laser excitation: an on/off ratio of 1.38 × 106, responsivity of 0.278 A/W, detectivity of 3.49 × 1012 Jones, and a response time of 16 μs. These metrics significantly surpass those of previously reported solution-processed counterparts. This work offers a new pathway for fabricating high-quality chloride-based perovskite films and facilitates their application in optoelectronic devices such as transparent solar cells and radiation detectors.
研究领域:
材料科学
·
光电子学
·
纳米技术
·
固体物理学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Mengru Geng,Xiaosen Pan,Jiaqi Zhao,Xiaojuan Wang,Ruiming Liu,Zijun Xu,Ning Ma,Meng Gao,Mingzhe Shao,Jie Li
Perovskite is proven to promote the surface dissociation of water molecules that are therefore applied in humidity-responsive electronics. However, inherent defects in crystals severely hinder structural stability and charge transfer which decline the performance of the devices. For this, we design a strategy to introduce Cs 2 SnCl 6 perovskite into the graphene oxide reduction system, during which the growth and optimization of perovskite crystals are achieved, accompanied by the formation of interface coordination with semi-reduced graphene oxide, obtaining stability and durability humidity-sensitive non-contact sensors. The results prove that the sensor exhibits low latency in response (0.8 s) and recovery (1.9 s), excellent sensitivity (6.5 × 10 6 ), and long-term stability (over 240 days). Additionally, distinguishable signals can be output easily in multiple different non-contact sensing applications and gesture recognition applications can be successfully implemented, which provides a possibility of human–computer interaction.
研究领域:
材料科学
·
电子工程
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2024
·
IF 2.6
Yuxia Li,Qi Luo,Xin Huang,Hao Lu,Yazhou Yuan,Xieming Xu,Shuaihua Wang,Shaofan Wu
In recent years, the development of new scintillation materials with red and near-infrared light emission has had significant advantages based on the development of an avalanche photodiode with high quantum yield. This study used a hydrothermal method to synthesize rare-earth-doped Cs2NaScCl6 crystals, in which a red emission of Cs2NaScCl6:Sm was investigated with high X-ray sensitivity and low detection limit. In addition, a tunable wavelength range of radioluminescence can be achieved, in which a near-white light emission can be generated by precisely controlling the proportion of Sm3+ and Tb3+ doping concentrations. Meanwhile, a Cs2NaScCl6:7%Sm scintillation film has been successfully prepared by direct coating with a thickness of 150 μm, which achieves a spatial resolution of 11.9 lp mm−1 based on X-ray imaging experiments. Therefore, this perovskite material has shown potential application as an eco-friendly multifunctional imaging material.
研究领域:
材料科学
·
医学影像
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yuxiang Xin,Xiachu Xiao,Jianru Wang,Nadeem Abbas,Shuo Zhang,Yibo Han,Jiang Tang,Artiom Skripka,Zhuolei Zhang
The development of multifunctional luminescent materials with tunable upconversion (UC), downshifting (DS), and thermally responsive emissions in a single host is essential for next-generation photonic and optoelectronic technologies. Here, we report a Nd 3+ -based low-phonon-energy lead-free halide double perovskite, Cs 2 NaNdCl 6 , which overcomes key limitations of conventional halide double perovskites, including doping inflexibility, concentration quenching, and lack of integration of diverse optical functionalities. Leveraging the large unit cell and the dual role of Nd 3+ as both emitter and sensitizer, we achieve efficient high-concentration doping of Tm 3+ , Er 3+ , and Yb 3+ without compromising emission intensity. Tm 3+ doping induces energy back transfer to Nd 3+ , leading to an 8.2-fold enhancement in the orange emission of Nd 3+ ions. Co-doping with Er 3+ /Yb 3+ enables excitation-dependent, color-tunable UC (green, orange, red) under 980 nm excitation, stable green UC emission under 808 nm excitation, and red DS emission under 365 nm excitation, useful for advanced anti-counterfeiting applications. Furthermore, the synergistic incorporation of multiple lanthanides facilitates multi-level fluorescence intensity ratio (FIR) thermometry via thermally coupled levels (TCLs), non-thermally coupled levels (non-TCLs), and Stark-split transitions, achieving a record relative sensitivity (S r ) of 11.4% K −1 in the 80–340 K temperature range. These findings establish Cs 2 NaNdCl 6 as a versatile platform for multifunctional lattice-engineered photonics.
研究领域:
光子学
·
光电子材料
·
发光材料
·
光学传感
·
防伪技术
·
稀土掺杂
·
固态化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Run Gan,Yanqing Zu,Tong Zhang,Chengzhang Yang,Chujie Wang,Binglin Zeng,Peitao Liu,Xiaodong Li,Fengbo Han,Yu Qian,Lei Zhao,Ailing Feng,Zhaoxin Wu
The lead-free perovskite Cs 2 ZrCl 6 has recently attracted huge interest in X-ray imaging application. However, it generally exhibits unsatisfactory stability originating from the intrinsically ionic structure and low formation energy, which will hinder the future application. Herein, we design different anchoring groups (amino, sulfhydryl and thiocyanate) mediated nucleation and growth process for synthesis of Cs 2 ZrCl 6 crystals coated by SiO 2 nanospheres, achieving Cs 2 ZrCl 6 @SiO 2 -X (X = NH 2 , SH, SCN) composites, respectively. Among these three samples, Cs 2 ZrCl 6 @SiO 2 -SCN has an impressive photoluminescence quantum yield (PLQY) of 89 %. More importantly, it also manifests outstanding stability toward light illumination, heat and moisture. Such high PLQY and robust stability stem from the isolation effect due to tight anchoring, which separate perovskite crystals from each other and prevent particle aggregation. Finally, a large-area (113 cm 2 ) scintillation screen based on Cs 2 ZrCl 6 @SiO 2 -SCN@poly(dimethylsiloxane) (PDMS) and a commercial thin-film transistor (TFT) panel (16 cm × 13 cm, 125 μm pixel size) were used to fabricate an X-ray imaging detector, which showed a spatial resolution up to 4 lp mm −1 beyond the upper limit of TFT panel and high-quality imaging capability of static objects. It is believed that this scintillator screen has a potential application in next-generation indirect X-ray detection and imaging.
研究领域:
材料科学
·
医学影像学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Xueqi Duan,Guona Li,Zhijian Jia,Hongzhen Xie,Xing Li
Copper is an essential element in the human body. Excess accumulations of copper, however, would become a potential threat. Therefore, it is of great significance to detect copper ions. Owing to their controllable morphology, dispersal characteristics, high extinction coefficient, and easily functionalized surfaces, gold nanoparticles (AuNPs) have been highly employed as attractive sensing probes for environmental and biological analyses. We herein propose an eco-friendly colorimetric strategy based on AuNPs modified with 3-pyridinylboronic acid (PA) for sensitive and selective detection of copper ions (Cu 2+ ) in water at trace level. The color changes of the system from wine-red to gray-blue with increasing amounts of copper ions is due to the binding of AuNPs modified with 3-pyridinylboronic acid to copper ions, which in turn leads to the aggregation of AuNPs with fine anti-interference. Strengths of the work: 1) rapid response time without complex pre-treatment; 2) high sensitivity with low limit of detection (LOD) and the good linear relationship ( R 2 = 0.98, LOD = 3.0 μM by the naked eye and 72 nM by ultraviolet-visible spectroscopy); 3) high selectivity under other interfering ions. In addition, the detection mechanism of this work has been successfully confirmed by density functional theory (DFT), transmission electron microscopy (TEM), dynamic light scattering (DLS), X-ray diffraction (XRD), Zeta potential analysis and ultraviolet-visible spectroscopy (UV–vis).
研究领域:
环境科学
·
分析化学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Zhuoqun Su,Youlin Kong,Tong Li,Yan Zhao,Xue Zhang,Di Wu,Yongning Wu,Guoliang Li
Biological nanopore refers to a type of pore-forming membrane proteins, providing a unique platform for single molecule detection of DNA, RNA, peptide, etc. The direct detection of small molecules, especially of food chemical contaminants by biological nanopore, remains challenging due to their fast translocation dynamics, trace amount, and the interference from the complex food matrix. The effective recognition and signal conversion methods need to be developed. Herein, we employ an aptamer-triggered hybridization chain reaction (AtHCR) strategy for the detection of a mycotoxin, aflatoxin B1 (AFB1) by an α -hemolysin nanopore. In the absence of AFB1, the formed dsDNA polymers in HCR show a low frequency of long-time blockage signals. The presence of AFB1 can inhibit the hybridization chain reaction through the interaction between AFB1 and its aptamer, so the remaining hairpins can easily block the nanopore and induce frequent long-time blockage signals. The results show that the event frequency of long-blockage has a linear relationship with the AFB1 concentration in the range of 6.6 × 10 −1 –6.6 × 10 2 pmol/L. The recognition and amplification effect of AtHCR allows nanopore to detect AFB1 at a detection limit of 0.54 pmol/L. Furthermore, the developed AtHCR strategy can help biological nanopore to detect AFB1 in corn sample with satisfactory accuracy. The recognition and amplification effect achieved by coupling AtHCR to biological nanopore offers an enzyme-free single-molecule technology for the rapid detection of food chemical contaminants.
研究领域:
纳米技术
·
分析化学
·
食品安全
·
分子生物学
✓ 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）