SOLAR ENERGY
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2019
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IF 4.674
Jiang He,Tianhui Li,Xueping Liu,Hang Su,Zhiliang Ku,Jie Zhong,Fuzhi Huang,Yong Peng,Yi-Bing Cheng
In this research, we investigated the influence of phase transition in four standard perovskite materials on the device stability under thermal cycling (TC) condition, which is listed in International Electrotechnical Commission (IEC) stability tests criteria. The evolution of morphology, phase structure and charge carrier dynamics of four type perovskite materials throughout thermal cycling were analyzed. It was found that the cubic to tetragonal phase transition of MAPbI 3 caused the quick degradation of the device, the α to δ phase transition in FAPbI 3 and FA 0.6 MA 0.4 PbI 3 resulted in sustained efficiency loss, while the FA 0.9 Cs 0.1 PbI 3 was more stable compared to above three perovskites under the same test condition. The FA 0.9 Cs 0.1 PbI 3 device retained nearly 88% of its initial efficiency after 200 temperature cycles between −30 °C and 85 °C, which could be ascribed to its successful stabilization of perovskite structure.
研究领域:
材料科学
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光伏技术
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物理化学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2023
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IF 9.5
Yutong Zhao,Bo Lv,Wei Song,Jinkai Hao,Junfang Zhang,Zhigang Shao
Conventional high-temperature proton exchange membranes use phosphoric acid (PA) as a proton conductor . However, PA loss, poor mechanical stability, and catalyst poisoning represent major limitations. Solid acids are an alternative to PA that does not require humidification and is less prone to leaching. In this study, we prepared two composite membranes by high-temperature impregnation to investigate the effects of the structure of polybenzimidazole (PBI) on the anchoring of solid acids: a laboratory-synthesized m -PBI/CsH 5 (PO 4 ) 2 and the commercial OPBI/CsH 5 (PO 4 ) 2 . Compared to PA-doped membranes, CsH 5 (PO 4 ) 2 -doped membranes showed excellent mechanical properties , particularly m -PBI/CsH 5 (PO 4 ) 2 . Scanning electron microscopy and energy dispersive spectroscopy images showed that CsH 5 (PO 4 ) 2 was uniformly dispersed on the surface and cross-section of both membranes, conducive to the formation of proton transport channels following the CsH 5 (PO 4 ) 2 melting in both samples. The characterization of the physical structures proved the interaction between the imidazole ring and solid acid. Furthermore, the proton conductivity without humidification was similar in m -PBI/CsH 5 (PO 4 ) 2 and OPBI/CsH 5 (PO 4 ) 2 , demonstrating the suitability of m -PBI for fuel cells production. To test this, we assembled a m -PBI/CsH 5 (PO 4 ) 2 cell that showed competitive performances, with a peak power density of 361.28 mW cm −2 at 160 °C in H 2 /O 2 atmosphere.
研究领域:
材料科学
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燃料电池工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Haiyan Liu,Huihuang Ma,Yao Chang,Xiaodong Zhou
With the rapid development of laser technology, there is an increasing demand for laser protective materials. Thus, the mechanical and ablation properties of composite materials need to be further enhanced. Herein, solution impregnation and hot-press molding were used to develop composites containing various mass ratios of ZrC to polybenzimidazole (PBI) resin (thickness = 3 mm) for laser ablation applications. The results showed that adding short carbon fiber (SCF) to ZrC/PBI composites improves the ablation and mechanical properties . The ZrC/PBI/SCF composites were ablated using a high-energy continuous laser (7 kW cm −2 ), and the composites did not burn through. The composites did not peel off or split as the ablation process progressed. With the increase in the ZrC content in the composites, dense oxide layers are formed, enhancing the ablation properties of the composites. The ZrC/PBI/SCF composite (the ZrC/PBI mass ratio = 2:1) exhibited the lowest mass loss (2.24%), mass ablation rate (0.119 mg s −1 ) and linear ablation rate (0.032 mm s −1 ). This indicates that ZrC/PBI/SCF composites can be used as protective materials in high-energy continuous laser applications.
研究领域:
材料科学
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激光技术
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产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Wang Shuo,Zhao Qian,Hazarika Abhijit,Li Simiao,Wu Yue,Zhai Yaxin,Chen Xihan,Luther Joseph M.,Li Guoran
A detailed picture of temperature dependent behavior of Cs x FA 1-x PbI 3 perovskite quantum dots across the composition range is constructed by performing in situ optical spectroscopic and structural measurements, supported by theoretical calculations that focus on the relation between A-site chemical composition and surface ligand binding. The thermal degradation mechanism depends not only on the exact chemical composition, but also on the ligand binding energy. The thermal degradation of Cs-rich perovskite quantum dots is induced by a phase transition from black γ-phase to yellow δ-phase, while FA-rich perovskite quantum dots with higher ligand binding energy directly decompose into PbI 2 . Quantum dot growth to form large bulk size grain is observed for all Cs x FA 1-x PbI 3 perovskite quantum dots at elevated temperatures. In addition, FA-rich quantum dots possess stronger electron−longitudinal optical phonon coupling, suggesting that photogenerated excitons in FA-rich quantum dots have higher probability to be dissociated by phonon scattering compared to Cs-rich quantum dots.
研究领域:
材料科学
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纳米技术
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光谱学
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理论计算
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产品关联
DOI
PubMed
高影响因子
ACS Omega
·
2021
·
IF 3.512
Li Lao,Kuo Liu,Li Ren,Jinhong Yu,Jingzhen Cheng,Yuqi Li,Shaorong Lu
Developing waterborne epoxy (WEP) coatings with excellent corrosion resistance and tribological properties is a key aspect to solve the damage of Q235 steel. In this work, perylene bisimide (PBI) derivatives dispersion graphene (GR) were prepared by a π–π stacking, the highly orientated PBI0.5%/GR0.5%/WEP coating will be prepared by the rotating coating method. Especially, the impedance value reached about 109 Ω·cm2 when the PBI and GR ratio is 1:1. The impedance value of PBI0.5%/GR0.5%/WEP coating increased by 3 orders of magnitude compared with that of pure WEP coating (106 Ω·cm2). Additionally, the coefficient of friction of the coatings was 0.33; compared with that of WEP, the coefficient of friction decreased by 48%, and the wear resistance increased by 87.6%. The results show that the PBI0.5%/GR0.5%/WEP coatings exhibited excellent corrosion resistance and wear resistance properties due to the good dispersion and high orientation of PBI/GR in WEP. It is anticipated that our current work would guide the ongoing efforts to develop a more efficient method to overcome the poor dispersion of GR in waterborne epoxy resin and provide a green coating with excellent corrosion resistance and wear resistance properties.
研究领域:
材料科学
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腐蚀与防护
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表面工程
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2015
·Vol. 5
·期 74
·60596-60607
·
IF 3.84
Lulu Pan,Jianfeng Ban,Shaorong Lu,Guoxin Chen,Jin Yang,Qiyun Luo,Linyan Wu,Jinhong Yu
Perylene tetracarboxylic anhydride (PTCDA) was reacted with 6-aminocaproic acid to form the corresponding perylene bisimide (PBI). PBI was used as the foundation for oligomerisation of glycidol in a ring-opening reaction of glycidol leading to a hyper branched, water-soluble glycidol derivative of perylene (PBI-HPG). PBI-HPG was bound to the reduced graphene oxide via π–π stacking resulting in a compound termed PBI-HPG/RGO. The structure and morphology of PBI-HPG/RGO were investigated by infrared spectroscopy (FT-IR), wide angle X-ray diffractometry (WAXD), transmission electron microscopy (TEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). PBI-HPG/RGO was blended at different loadings in order to improve the thermal and mechanical properties of epoxy composites. The maximum Tg of the epoxy composites was about 20 °C and the decomposition temperature (Td) was 26 °C higher than that of neat epoxy. The incorporation of PBI-HPG/RGO yields a material with an impact strength of 39.6 kJ m−2 and a tensile strength at 0.7 wt%. It increased by 50.8% and 62.3%, respectively, compared to the neat epoxy.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2023
·
IF 9.5
Mingguang Han,Xilun Ding,Haibin Duan,Sida Luo,Geng Chen
Capacitive humidity sensors have been used for human health monitoring, but their performance may be poor in terms of sensitivity and response time, because of limitations in sensing materials and insufficient knowledge about sensing mechanisms. Herein, a new combination of humidity sensing materials to assemble thin-film based capacitive-type sensors is proposed by using PA-doped polybenzimidazole (PA–PBI) as an electrolyte and laser-carbonized PA–PBI as a carbon electrode (PA–PBI-C). Based on PA involved laser scribing, the flexible sensor can reach excellent humidity-sensing performances with an ultrahigh sensitivity (1.16 × 106 pF RH%–1, where RH represents the relative humidity), a superior linearity (R2 = 0.9982), a fast response time (0.72 s), and a low hysteresis in a wide RH range from 1% to 95%. By further studying P–O decorated porous carbon electrode with superhydrophilicity and the solid-state dielectric electrolyte featured by a high dielectric constant, a synergistic sensing mechanism consisting of a “Water reservoir” and a “Bridge” is established to support advanced health-monitoring applications such as the respiration patterns and skin condition where both sensitivity and response time are critical.
研究领域:
材料科学
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电化学
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生物医学工程
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传感器技术
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产品关联
DOI
PubMed
高影响因子
PLANT BIOTECHNOLOGY JOURNAL
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2024
·
IF 10.1
Guanhua Zhang,Han Zheng,Xiao Wang,Shuxin Han,Wei Liu,Chenglong Sun,Qiongzheng Hu,Chunxia Ma
Summary Monitoring and localizing molecules on living plants is critical for understanding their growth, development and disease. However, current techniques for molecular imaging of living plants often lack spatial information or require tedious pre-labelling. Here, we proposed a novel molecular imaging platform that combines sliver nanowire-doped Ti 3 C 2 MXene (Ag NWs@MXene) flexible film substrate with laser desorption/ionization mass spectrometry imaging (AMF-LDI-MSI) to study the spatial distribution of biomolecules on the surface of living plants. This platform overcomes the MSI challenges posed by difficult-to-slice plant tissues (e.g., tough or water-rich roots and fragile flowers) and enables precisely transfer and visualize the molecule. Comparisons of the measurement results to those from matrix-assisted LDI-MSI (MALDI-MSI) technology demonstrate the accuracy and reliability of the platform. Biocompatibility evaluations indicated that the platform without observable adverse effects on the health of living plants. The distribution of growth and disease-associated signalling molecules, such as choline, organic acids and carbohydrates, can be in situ non-destructively detected on the surfaces of living plants, which is important for tracking the health of plants and their diseased areas. AMF-LDI-MSI platform can serve as a promising tool for label-free, in situ and non-destructive monitoring of functional biomolecules and plant growth from a spatial perspective.
研究领域:
植物生物学
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分析化学
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生物技术
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产品关联
DOI
PubMed
高影响因子
PLANT BIOTECHNOLOGY JOURNAL
·
2026
·
IF 10.5
Liyong Sun,Yusen Wang,Minglu Yin,Lina Xu,Yao Chen,Shuxian Li,Zengfang Yin
Amaranthus palmeri is one of the most troublesome invasive agricultural weeds worldwide, exhibiting super invasiveness and high resistance to conventional management strategies. Artificial microRNA-mediated silencing technology, coupled with a nanoparticle-mediated delivery system, represents an attractive approach for fertility control in A. palmeri . In this study, we first characterised the biological function of ApMIR319 via ectopic overexpression in Arabidopsis , identifying it as a crucial candidate molecular target for fertility regulation in A. palmeri . Subsequently, we prepared layered double hydroxide (LDH) nanosheets using the co-precipitation-hydrothermal method. Employing the LDH nanosheets as nanocarriers, we implemented nearly complete encapsulation of the ApmiR319 mimic at a mass ratio of 1:100. The LDH-ApmiR319 mimic complex exhibited stable loading capacity in neutral and alkaline solutions. Furthermore, the LDH-ApmiR319 mimic complex demonstrated robust adhesion to leaf surfaces and enhanced resistance to enzymatic degradation. Spraying treatments with the LDH-ApmiR319 mimic complex significantly elevated ApmiR319 expression levels in male florets, while concurrently down-regulating its target genes ( ApTCP4 , ApTCP10 and ApMYB33 ), thereby inhibiting pollen development in A. palmeri . In conclusion, this study successfully established an LDH nanosheet-mediated delivery system of ApmiR319 mimic for male fertility control in A. palmeri . It represents a novel strategy and direction for achieving sustainable management of this weed.
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DOI
PubMed
高影响因子
PLANT BIOTECHNOLOGY JOURNAL
·
2026
·
IF 10.5
Yike Su,Xiaojuan Yang,Chanyuan Wu,Xianyao Jin,Yuanyuan Zhang,Yuyan Zhang,Kunsong Chen,Mingliang Yu,Bo Zhang
Free amino acids (FAAs) play a fundamental role in determining fruit quality and stress adaptation, yet their genetic regulation remains poorly understood. Through an integrated approach combining metabolomic and sensory analyses of 120 peach ( Prunus persica ) hybrids, we identified glutamate as a key metabolite linking FAA content to umami taste perception. By combining genome-wide association studies (GWAS) with expression quantitative trait locus (eQTL) mapping, we identified PpGGAT1 (glutamate:glyoxylate aminotransferase) and the zinc finger transcription factor PpC2H2-3 as central regulators of glutamate metabolism. Functional characterisation revealed that overexpression of PpGGAT1 led to reduced glutamate levels and diminished umami intensity, whereas PpC2H2-3 transcriptionally suppresses PpGGAT1 to enhance glutamate accumulation. Notably, elevated glutamate levels enhanced resistance to Monilinia fructicola infection, with both genes showing significant expression changes during the progression of brown rot disease. Comparative analysis further indicated that freestone cultivars exhibit superior glutamate accumulation, a trait confirmed across 100 commercial varieties. Our findings reveal a novel regulatory module, PpC2H2-3-PpGGAT1, that coordinately modulates fruit flavour quality and defence responses against pathogens. This study provides mechanistic insights into FAA regulation in fruit crops and identifies actionable molecular targets for the development of varieties with enhanced sensory attributes and disease resistance.
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DOI
PubMed
高影响因子
PLANT BIOTECHNOLOGY JOURNAL
·
2026
·
IF 12.8
Ruo-Cheng Sheng,Huan Li,Jun Wang,Li-Chao Wang,Hui-Zi Liu,Xiao-Feng Dai,Steven J. Klosterman,Jie-Yin Chen,Krishna V. Subbarao,Feng-Mao Chen,Dan-Dan Zhang
Mitochondria serve as cellular powerhouses that generate ATP via electron transport chain complexes and orchestrate metabolism-apoptosis cross-talk, yet genes maintaining mitochondrial homeostasis remain underexplored as antifungal targets. In this study, a previously uncharacterised protein VdAtuA3 was identified as a novel interactor with VdNuo1 (NADH: ubiquinone oxidoreductase 24-kDa subunit), defining a regulatory axis for the mitochondrial respiratory chain in Verticillium dahliae . Notably, VdNuo1 is highly conserved across plants, animals, and humans, consistent with its essential role in respiration, whereas VdAtuA3 homologues in non-fungal organisms share very low sequence similarity. Moreover, Y2H assays confirmed no interaction between Nuo1 and AtuA homologues from above organisms, indicating that this regulatory axis is specific to V. dahliae . The pathogen virulence factor VdAtuA3 and VdNuo1 co-regulate oxidative phosphorylation and superoxide detoxification, thereby promoting mitochondrial homeostasis. Staurosporine (STS), a natural microbial product, targets VdAtuA3, inhibiting its function and reducing the interaction between VdAtuA3 and VdNuo1, inducing mitochondrial dysfunction in V. dahliae , and suppressing its growth effectively controls Verticillium wilt. STS shows high efficacy with minimal off-target toxicity and can be safely applied to cotton, zebrafish, and human cells at fungistatic doses. Its broad-spectrum activity against multiple filamentous fungi, consistent with its high binding affinity to AtuA homologues from various filamentous fungi as demonstrated by molecular docking and functional complementation assays, further supports its potential as a promising antifungal agent. Our study provides a proof-of-concept for targeting pathogen-specific virulence factors that regulate mitochondrial homeostasis as a novel strategy to manage fungal plant pathogens.
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DOI
PubMed
高影响因子
PLANT BIOTECHNOLOGY JOURNAL
·
2025
·
IF 10.5
Shu-Yue Zhang,Jian-Qiang Kong
Summary OSW-1 is a cholestane saponin uniquely produced in Ornithogalum saundersiae and exhibits a potential antitumor activity. The enzymes responsible for OSW-1 biosynthesis in O. saundersiae , however, remain unclear. Herein, cholesterol was confirmed to be the precursor of OSW-1 using stable-isotope labeling method. Next, two cytochrome P450s, Os CYP90B94 and Os CYP90G11, and their partner cytochrome P450 reductase Os CPR2 were mined by comparable transcriptome analysis and demonstrated to be involved in OSW-1 biosynthesis. Specifically, Os CYP90B94 catalyses cholesterol to 22 R -hydroxycholesterol, which is then converted to 16 β -hydroxy-22-oxo-cholesterol, a precursor of OSW-1 by the second P450 O sCYP90G11 via two consecutive oxidation reactions. Unlike their homologues, Os CYP90G11 and Os CYP90B94 displayed broader catalytic promiscuity. Os CYP90B94 recognizes both cholesterol and 7 β -hydroxycholesterol, while Os CYP90G11 can react with cholesterol, 22 R -hydroxycholesterol and 16 β ,22 R -dihydroxycholesterol, suggesting their involvement in more than one pathway besides OSW-1 biosynthesis. This study lays a foundation for the complete characterization of OSW-1 biosynthesis.
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DOI
PubMed
高影响因子
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