ANALYTICAL CHEMISTRY
·
2018
·
IF 6.042
Xinwei Liu,Xiao Wang,Jiexun Bu,Xiaoyu Zhou,Zheng Ouyang
Miniature mass spectrometers are of an increasing interest for in-situ analyses, and their coupling with the ambient ionization sources is a valid path for direct analysis of complex samples. In this study, a miniature mass spectrometer using discontinuous atmospheric pressure interface was developed with a dual-LIT (linear ion trap) configuration. The comprehensive scan modes were enabled for tandem mass spectrometry analysis, which are critical for high-quality qualitative and quantitative analysis. A real-time pressure control was implemented to facilitate the ion transfer and collision induced dissociation (CID). Beam-type CID could be performed for tandem analysis at a high number of stages. In-trap CID at high q could also be performed with the fragment ions accumulated in a second trap. A precursor ion scan mode for analyzing target analytes has also been demonstrated.
研究领域:
分析化学
·
质谱技术
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DOI
PubMed
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2018
·
IF 0.824
Lu-Lu SUN,Chong-Sheng XU,Fu-Xing XU,Zhen ZHOU,Chuan-Fan DING
The polygonal electrode linear ion trap (PeLIT) can produce quadrupolar electric field plus some higher order field, which balances the relationship between mass resolution and electrode manufacturing difficulties. The electrodes of PeLIT are relatively simple, but have a good mass resolving power. This study investigated the relationship between the electric field distribution and the ion trap structures, and the performances of PeLIT through theoretical simulation and experimental study. Research results of simulation showed that the polygonal electrode linear ion traps with different structures had different electric field distributions and mass analysis performances. The negative decapole field distorted the performances significantly. The experimental results showed that the mass resolution of reserpine ions ( m / z 609) was more than 2500 using a polygonal electrode ion trap. At the same time, mass selective excitation and tandem mass spectrometry experiments were also carried.
研究领域:
分析化学
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质谱技术
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DOI
高影响因子
BIOMEDICINE & PHARMACOTHERAPY
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2022
·
IF 7.419
Hui Jin,Ningning Jiang,Wenshu Xu,Zhongyuan Zhang,Yang Yang,Jingmin Zhang,Hui Xu
In this experimental study, we evaluated the protective effects and the safety of main flavanones derived from Rhizoma Drynariae (Gusuibu) in vitro and in vivo. The MTT assay showed that compared with vehicle treatment, treatment with such flavanones as neoeriocitrin, naringin, and naringenin significantly promoted the viability of osteocyte-like cells. Quantitative real-time PCR showed that neoeriocitrin and naringin significantly attenuated mRNA expressions of RANKL and SOST in osteocyte-like cells. In rats with retinoic acid-induced osteoporosis, total flavonoid of Rhizoma Drynariae (TFRD) , naringin, and naringenin significantly increased the number of trabeculae and improved trabecular bone structure compared with no treatment, without affecting liver and renal function. In addition, naringenin and naringin administration significantly increased bone mineral density of femur neck and femur shaft compared with the osteoporotic model rats. Western blot analysis showed that naringenin and naringin significantly attenuated protein expressions of bone resorption-related factors (TRAP, RANKL and RANK), and inhibited sclerostin expression compared with the osteoporotic model rats. On the other hand, naringin markedly increased protein expressions of ALP and PTH1R, and TFRD and naringenin also promoted PTH1R expression compared with the model rats. In conclusion, such flavanones as naringenin and naringin exhibited antiresorptive properties, and naringin particularly showed potential benefits for osteoporosis treatment.
研究领域:
药理学
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骨科
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分子生物学
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DOI
PubMed
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 11
·1-8
·
IF 3.2
Zhigang Wang,Jiayu Wang,Dangli Gao,Wenqian Xu,Wenna Gao,Xiangyu Zhang,Sining Yun,Xiaojun Wang
Double wavelength emitting phosphors with hypersensitive thermal response are important for optical/thermal sensors and multiplexing optical data storage technology. However, it is a daunting challenge to develop multicolor electron-trapping materials with superheat sensitivity and anomalous quenching luminescence characteristics for information storage. Here, based on the selection of host lattice and the control of doping ion types, we have designed Mn 2+ - and/or Cr 3+ -activated persistent materials with excellent fluorescence properties. Among these phosphors, Mn,Cr co-activated biphasic mixture exhibits not only sensitive anomalous thermosensitive fluorescence properties but also multicolor and multimode fluorescence emission characteristics derived from Mn and Cr simultaneously. The corresponding multimode fluorescence mechanism is proposed based on afterglow energy transfer and deepening trap effect. Especially, based on the excellent fluorescence performances, these phosphors as information storage medium demonstrate multilevel information storage by a combination of the trap multiplexing and wavelength multiplexing technologies. The study here provides not only the ideas for designing and synthesizing new electronic materials but also a material foundation for the fourth generation of optical information storage and encryption.
研究领域:
材料科学
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光学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2025
·Vol. 13
·期 14
·7264-7275
·
IF 5.1
Jingxuan Zhang,Zetian Yang,Hengwei Lin,Dirk Poelman,Henk Vrielinck,Jiaren Du
Motivated by their variable chromatic transformations and remarkable thermal stability, photochromic materials derived from sodalite (Na8(AlSiO4)6Cl2) have been proposed for various applications such as optical anti-counterfeiting and radiation dosimetry. Nonetheless, the utilization of these optical materials is significantly constrained by the intricate synthesis process and weak photochromic contrast. Herein, a one-step microwave-assisted solid-state method is adopted to prepare sodalites and optimize their photochromic performance. The results show that the sample can be synthesized through only 16-minute microwave radiation, greatly simplifying the preparation process. Notably, the maximum photochromic contrast of sodalites is enhanced from 13.8% to 26.9% through the partial substitution of Cl with S ions. In addition, optical spectroscopy and electron spin resonance experiments are performed to investigate the influence of traps on the photochromic behavior. It was found that the photochromic behavior in sodalites is mainly determined by traps with an energy depth around 0.788 eV. The activation energy of these traps is determined by the host and the corresponding preparation approach. Finally, sodalite-based compounds are fabricated into fibers for clothing decoration demonstration. This work not only provides a facile method for the synthesis of sodalite-based photochromic materials but also gives insight into the trap-involved photochromic mechanism.
研究领域:
材料科学
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无机化学
·
功能材料
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光化学
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纳米科技
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固体物理
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纺织材料
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产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Zhihao Yue,Yuanyuan Wang,Zhuyue Lan,Ke Hu,Shitao Shi,Jiayi Zhang,Qingyu Meng,Yujing Nie,Qingfeng Sun,Xiaoping Shen
Ice buildup is a safety hazard for infrastructure, transportation and power lines. However, superhydrophobic anti-icing surfaces as well as traditional mechanical and chemical means can hardly coordinate the high anti-icing efficiency with the durable reusability, energy expenditure or environmental impact. Herein, a sustainable, low-cost and dual-action bilayer bamboo (BLB) sheet is developed by bamboo carbonization and surface hydrogel coating. This BLB laminate consisting of a carbonized bamboo (CB) substrate as photo-absorber and thermal insulator and a gel layer as absorber and heat spreader exhibit highly efficient anti-freezing and de-icing performances by converting solar illumination to heat and ion-specifically inhibiting heterogeneous ice nucleation (HIN). This BLB shows remarkable comprehensive performances of low ice adhesion (τ ice ≈ 0 kPa above −25 °C), good photothermal conversion effectiveness (k T =0.52), great recyclability (switchable dual modes), and enhanced HIN inhibition (T H = −25 °C and t H = 1322 s). We provide the single and synergistic mechanisms governing the photothermal trapping and ion-induced HIN inhibition. We demonstrate the frozen drop melting, ice block self-moving and large-area snow removing efficacy on BLB as a convenient and long-lasting anti-icing biomass-based covering material via laboratory-scale and outdoor experiments.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
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2017
·
IF 0.795
Fu-Xing XU,Qian-Kun DANG,Hang-Yu DING,Zheng-Xu HUANG,Yuan-Yuan WANG,Zhen ZHOU,Chuan-Fan DING
Ion trap performances were investigated based on digital ion trap technology with different collision gases and their pressures. Collision gases of helium ( M = 4 amu), nitrogen ( M = 28 amu) and argon ( M = 40 amu) with various pressures were adopted in ion excitation and dissociation stages for comparing the ion trap performances, including mass resolution, signal intensity, analysis ability of tandem mass spectrometric and low-mass cut off (LMCO) effect. The results indicated that when argon was used, the kinetic energy could be efficiently transferred and the LMCO effect was improved with higher ion capture and dissociation efficiencies except lower mass resolution. Higher mass resolution was realized with helium as collision gas. Furthermore, at the same gas pressure, heavier gas was beneficial to abundant fragment ions and structural information of precursor ion.
研究领域:
分析化学
·
质谱技术
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DOI
高影响因子
ACS Photonics
·
2024
·
IF 6.5
Longlong Jiang,Banghu Wang,Fan Ni,Wentao Xu,Xiaohong Wang,Lei Zheng,Longzhen Qiu
Artificial photoelectric synaptic devices are promising candidates for simulating the perception, processing, and memory functions of biological visual information. Dielectric layer interface modification is a simple and effective strategy for the fabrication of light stimulated synaptic devices. In this work, the dielectric layer interface was tuned by varying the terminating groups of self-assembled monolayers (SAMs), whereas the polymer polydiketopyrrolopyrrole-selenophene with hybridized siloxane side chains (PTDPPSe-4Si) was used as the active layer for fabrication of the transistor devices. Enhanced optoelectronic performance was observed in the fabricated devices that were treated by pentafluorophenylpropyltrichlorosilane (FPPTS) due to the presence of more interfacial charge traps. The photosensitivity and detection rate were found to be up to 105 and 1011 Jones, respectively. Furthermore, it was also shown experimentally that the interfacial charge trapping effect was caused by a combined effect of electron trapping by the SAMs-modified interface and traps present within the active layer. Biological synaptic plasticity was successfully simulated using FPPTS/PTDPPSe-4Si-based devices. The memory and forgetting processes of biomimetic visual information were also simulated. Finally, conventional neural networks were used for image recognition, achieving a recognition rate of over 95%.
研究领域:
材料科学
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仿生学
·
电子工程
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产品关联
DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Siying Tao,Yingming Yang,Chenzhou Wu,Jiaojiao Yang,Ziyou Wang,Fangjie Zhou,Kunneng Liang,Yi Deng,Jianshu Li,Jiyao Li
Chronic infectious bone destruction diseases, such as periodontitis, pose a significant global health challenge. Repairing the bone loss caused by these chronic infections remains challenging. In addition to pathogen removal, regulating host immunity is imperative. The retention of neutrophil extracellular traps (NETs) in chronic infectious niches is found to be a barrier to inflammation resolution. However, whether ruining the existing NETs within the local infectious bone lesions can contribute to inflammation resolve and bone repair remains understudied. Herein, a nanocapsuled delivery system that scavenges NETs dual-responsively to near-infrared light as a switch and to NETs themselves as a microenvironment sensor is designed. Besides, the photothermal and photodynamic effects endow the nanocapsules with antibacterial properties. Together with the ability to clear NETs, these features facilitate the restoration of the normal host response. The immunocorrective properties and inherent pro-osteogenic effects finally promote local bone repair. Together, the NET scavenging nanocapsules address the challenge of impaired bone repair in chronic infections due to biased host response caused by excessive NETs. This study provides new concepts and strategies for repairing bone destruction attributable to chronic infections via correcting biased host responses in chronic infectious diseases.
研究领域:
医学
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免疫学
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生物材料学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Chao Tan,Weilong Liu,Wenzhuo Li,Hongbo Qi,Xiaojun Zhu,Zhongfang Ji,Jian Cheng,Wenzhi Wu,Qingxin Yang
Appropriately doped lead-free double perovskites (LFDPs) or vacancy-ordered double perovskites (VODPs) exhibit efficient and stable white-light emission via self-trapped excitons (STEs), and therefore hold significant potential for applications in lighting and display technologies. However, the intrinsic luminescence of the host is often disregarded when studying the doped materials because most LFDPs or VODPs possess indirect bandgaps or parity-forbidden transitions from conduction band to valence band. Here, we report a weak warm white light emission from pure Cs2SnCl6 microcrystals, and attribute this emission to the deep trap state according to the observations of absorption and photoluminescence (PL) spectra. The bandgap and structural characteristics of Cs2SnCl6 were further illustrated by analyzing the absorption, PL, Raman spectra and PL dynamics under variable pressure and temperature conditions. The emission mechanism of the deep trap levels in Cs2SnCl6 microcrystals and their potential impact on the STEs emission were discussed based on the spectroscopic observations.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2025
·
IF 26.8
Yuchun Liu,Tianqi Liu,Xinyun Wang,Jing Zhang,Xingwu Zhai,Tianchen Wei,Qianqi Shi,Chengjie Lu,Huan Yan,Yujian Xia,Weiren Cheng,Min Zhou
Li-CO₂ batteries promise ultrahigh theoretical energy densities but face efficiency limitations owing to the sluggish decomposition of stable Li 2 CO 3 . Redirecting the redox pathway toward Li 2 C 2 O 4 overcomes this challenge, but its metastability leads to facile conversion to Li 2 CO 3 during discharge. Herein, subsurface electronic confinement is engineered in Mo-based catalysts, leveraging electron-deficient boron (B) as electron traps in the subsurface atomic layers to tailor their interfacial electronic landscapes. This design elevates the Mo d-band and intensifies the hybridization between the Mo d-orbitals and O p-orbitals of oxalate. Strengthening the Mo-O interaction stabilizes Li 2 C 2 O 4 against decomposition. The highly reversible and stable redox chemistry enabled by MoB results in an exceptional cycling stability and energy efficiency across a wide temperature range, with an expanded practical viability. At 70 µA cm −2 , the MoB-based battery is cycled for >1400 h with a high energy efficiency of >85%. The energy efficiency even remains at >90% for ≈150 h at a high temperature (90 °C). This study pioneers a material design framework for use in stabilizing metastable products within Li-CO 2 batteries, advancing their applicabilities in extreme environments, such as deep-earth exploration, by revealing the role of subsurface charge redistribution in steering reaction pathways.
研究领域:
储能
·
材料科学
·
电化学
·
催化
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Xuejiao Wang,Zhi Su,Lan Zheng,Kaifa Zhao,Qiyang Cai,Xiangyu Wei,Yaqing Zhao,Yan Ke,Yuelu Fan,Hu Zhu
Inspired by nature's sophisticated use of light energy, we report a bioinspired antibacterial trap switch operating without exogenous competitors. This work engineers a light-gated supramolecular system where host-guest conformational reorganization between cucurbit[8]uril (CB[8]) and dicationic symmetric azobenzene derivative (Azo- E ) enables precise control over antimicrobial agent release. Upon ultraviolet (UV) irradiation triggers E - Z isomerization, enhancing its binding affinity to CB[8] and resulting in steric displacement of the encapsulated antibacterial agent through conformational reorganization. This system achieves >99.9% bacterial eradication, supports reversible switching across four conventional antibacterial agents, and reduces mammalian cell cytotoxicity. Spray-coatable on different biomaterial surfaces, it demonstrates spatial precision for localized disinfection. This molecular engineering establishes a general platform for spatiotemporally precise regulation of bioactive cargoes, enabling adaptive supramolecular systems with infection control.
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PubMed
高影响因子
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