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Layer-by-layer epitaxy growth of thickness-controllable two-dimensional tungsten disulfide

Science China(Information Sciences) 2024年第5期67卷 302-310页

作者： Jieyuan LIANG Zixing ZOU Junwu LIANG Di WANG Biao WANG Anshi CHU jiali yi Cheng ZHANG Lizhen FANG Tian ZHANG Huawei LIU Xiaoli ZHU Dong LI Anlian PAN Key Laboratory for Micro-Nano Physics and Technology of Hunan Province State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan Institute of Optoelectronic IntegrationCollege of Materials Science and Engineering School of Physics and ElectronicsHunan University School of Electronic Information and Electrical Engineering Changsha University School of Physics and Telecommunication Engineering Yulin Normal University Units Semiconductor Technology Co. Ltd. School of Physics and Electronics Hunan Normal University

Bilayer transition metal dichalcogenides（TMDs） balance the high mobility of single layers with the high state density of multilayers and therefore have promising application prospects in high-performance electronics. However, the layer-controlled growth of 2D materials is still confronted with challenges such as poor repeatability between different labs and a limited understanding of the growth mechanism at the atomic scale. Herein, we report a new carbon-assisted chemical vapor deposition process that can realize the growth of WS2sheets with high yield, precise thickness controllability, and repeatability. We show that carbon can act as a reducing agent and catalyst that preferentially reacts with the WO3precursor to form intermediate WO3-xproducts with low-valence state W. The resulting oxycarbide gas has a low surface adsorption energy when deposited on the surface of as-grown WS2, which provides nucleation sites for the subsequent layer of WS2growth and leads to the vertical growth of WS2sheets. The growth mechanism is thoroughly investigated. Electrical transport measurements show that the produced bilayer WS2possesses a high carrier mobility(up to 58 cm2·V-1·s-1) and small subthreshold swing（estimated to be 148 mV/decade）,which are among the best reported results for TMDs produced using CVD.

关键词： WS$_2$ thickness-controlled growth chemical vapor deposition additive carbon

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Van der Waals epitaxial growth and optoelectronics of a vertical MoS_(2)/WSe_(2)p-n junction

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Frontiers of Optoelectronics 2022年第4期15卷 1-8页

作者： Yu Xiao Junyu Qu Ziyu Luo ying Chen Xin Yang Danliang Zhang Honglai Li Biyuan Zheng jiali yi Rong Wu Wenxia You Bo Liu Shula Chen Anlian Pan Key Laboratory for Micro-Nano Physics and Technology of Hunan Province College of Materials Science and EngineeringHunan UniversityChangsha 410082China School of Materials Science and Engineering Key Laboratory for Micro-Nano Physics and Technology of Hunan ProvinceHunan UniversityChangsha 410082China

Two-dimensional(2D)transition metal dichalcogenides(TMDs)have attracted extensive attention due to their unique electronic and optical *** particular,TMDs can be fexibly combined to form diverse vertical van der Waals(vdWs)heterostructures without the limitation of lattice matching,which creates vast opportunities for fundamental investigation of novel optoelectronic ***,we report an atomically thin vertical p-n junction WSe_(2)/MoS_(2)produced by a chemical vapor deposition *** electron microscopy and steady-state photoluminescence experiments reveal its high quality and excellent optical *** gate feld efect transistor(FET)constructed using this p-n junction exhibits bipolar behaviors and a mobility of 9 cm^(2)/(V·s).In addition,the photodetector based on MoS_(2)/WSe_(2)heterostructures displays outstanding optoelectronic properties(R=8 A/W,D^(*)=2.93×10^(11)Jones,on/of ratio of 10^(4)),which benefted from the built-in electric feld across the *** direct growth of TMDs p-n vertical heterostructures may ofer a novel platform for future optoelectronic applications.

关键词： MoS_(2) WSe_(2) Chemical vapor deposition(CVD) Vertical heterostructure Optoelectronic transistor

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Solid-state synthesis and ion transport characteristics of the β-KSbF_(4) for all-solid-state fluoride-ion batteries

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Journal of Energy Chemistry 2024年第7期94卷 758-767页

作者： jiali Liu Huahui Zhao Jingcheng Xia Lingguang yi Xiaoyi Chen Dongdu Li Shuhan Ni Xinyi Su yixuan Chen Min Liu Xianyou Wang National Base for International Science&Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage&ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina College of New Energy Ningbo University of TechnologyNingbo 315336ZhejiangChina

All-solid-state fluoride ion batteries(FIBs)have been recently considered as a post-lithium-ion battery system due to their high safety and high energy *** like all solid-state lithium batteries,the key to the development of FIBs lies in room-temperature electrolytes with high ionic conductivity.β-KSbF_(4) is a kind of promising solid-state electrolyte for FIBs owing to its rational ionic conductivity and relatively wide electrochemical stability window at room ***,the previous synthesis routes ofβ-KSbF_(4) required the use of highly toxic hydrofluoric acid and the ionic conductivity of as-prepared product needs to be further ***,the β-KSbF_(4) sample with an ionic conductivity of 1.04×10^(-4)s cm^(-1)(30°C)is synthesized through the simple solid-state *** order to account for the high ionic conductivity of the as-synthesizedβ-KSbF_(4),X-ray diffraction(XRD),scanning electron microscopy(SEM),and energy dispersive X-ray spectroscopy(EDS)are used to characterize the physic-ochemical *** results show that the as-synthesizedβ-KSbF_(4) exhibits higher carrier concentra-tion of 1.0×10^(-6)S cm-Hz^(-1)K and hopping frequency of 1.31×10^(6)Hz at 30°C due to the formation of the fluorine ***,the hopping frequency shows the same trend as the changes of ionic conductivity with the changes of temperature,while the carrier concentration is found to be almost *** two different trends indicate the hopping frequency is mainly responsible for the ionic conduc-tion behavior withinβ-KSbF_(4).Furthermore,the all-solid-state FIBs,in which Ag and Pb+PbF_(2) are adopted as cathode and anode,andβ-KSbF_(4) as fluoride ion conductor,are capable of reversible charge and *** assembled FIBs show a discharge capacity of 108.4 mA h g^(-1) at 1st cycle and 74.2 mA h g^(-1) at 50th *** on an examination of the capacity decay mechanism,it has been found that deterioration of the electrolyte/electrode int

关键词： Solid-state electrolyte Carrier concentration Hopping frequency β-KSbF_(4) All-solid-state fluoride ion batteries

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Mitochondria-targeted nanoparticles overcome chemoresistance via downregulating BACH1/CD47 axis in ovarian carcinoma

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Chinese Chemical Letters 2024年第5期35卷 344-350页

作者： Ke Gong Jinghan Liao Jiangtao Lin Quan Wang Zhihua Wu Liting Wang jiali Zhang yi Dong Yourong Duan Jianhua Chen State Key Laboratory of Systems Medicine for Cancer Shanghai Cancer InstituteRenji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200032China Department of Ultrasound Xinhua HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200092China Department of Oncology Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China

The platinum-based chemotherapy is a routine strategy for the treatment of ovarian cancer,while it is prone to chemoresistance in clinical,which hinders the ***,it is urgently needed to elucidate the underlying mechanism of drug resistance and form the appropriate *** sequencing results showed that cisplatin(DDP)resistant ovarian cancer overexpressed BTB and CNC homology 1(BACH1),and up-regulated the“don’t eat me”signal *** identified that hemin,a BACH1 inhibitor,could effectively down-regulate BACH1 and simultaneously inhibit ***,hemin has a synergistic effect with *** designed a pH-responsive nanoparticle(H/D@FA-CaP-NPs)in which folic acid(FA)ensured targeting of ovarian cancer cells,while hemin inhibited BACH1 as well as down-regulated CD47,achieving the promotion of apoptosis of tumor cells and inducing phagocytosis of tumors by ***,hemin has a synergistic effect with DDP to promote apoptosis of tumor ***,hemin and DDP was encapsulated within hydrophobic 1,2-distearoyl-sn-glycero-3-phosphoethanolamine(DSPE)to form a tight core,and hydrophilic polyethylene glycol 2000(PEG2000)and calcium phosphate(CaP)formed the outside shell,and FA was modified on the surface of *** terms of function,(a)FA enhanced the active targeting of nanoparticles to tumors;(b)NPs targeted mitochondria to induce reactive oxygen species(ROS)production;(c)hemin encapsulated in nanoparticles could specifically target BACH1,thereby down regulating CD47;(d)hemin had a synergistic effect with DDP,thus augmenting the ***,mitochondria-targeted nanoparticles H/D@FA-CaP-NPs promoted tumor apoptosis and mobilized phagocytosis to treat tumor,providing a novel scheme for clinical treatment of cisplatin-resistant ovarian carcinoma.

关键词： Cisplatin-resistant Hemin BACH1 CD47 Phagocytosis ROS Synergistic effect

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Tumor-targeted metabolic inhibitor prodrug labelled with cyanine dyes enhances immunoprevention of lung cancer

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Acta Pharmaceutica Sinica B 2024年第2期14卷 751-764页

作者： Wen Li jiali Huang Chen Shen Weiye Jiang Xi Yang Jingxuan Huang Yueqing Gu Zhiyu Li yi Ma Jinlei Bian State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China Department of Biomedical Engineering School of EngineeringChina Pharmaceutical UniversityNanjing 210009China Jiangsu Key Laboratory of Drug Design and Optimization Department of Medicinal ChemistrySchool of PharmacyChina Pharmaceutical UniversityNanjing 210009China

Recent progress in targeted metabolic therapy of cancer has been limited by the considerable toxicity associated with such *** address this challenge,we developed a smart theranostic prodrug system that combines a fluorophore and an anticancer drug,specifically 6-diazo-5-oxo-L-norleucine(DON),using a thioketal linkage(TK).This system enables imaging,chemotherapy,photodynamic therapy,and on-demand drug release upon radiation *** optimized prodrug,DON-TK-BM3,incorporating cyanine dyes as the fluorophore,displayed potent reactive oxygen species release and efficient tumor cell *** the parent drug DON,DON-TK-BM3 exhibited no toxicity toward normal ***,DON-TK-BM3 demonstrated high tumor accumulation and reduced side effects,including gastrointestinal toxicity,in *** study provides a practical strategy for designing prodrugs of metabolic inhibitors with significant toxicity stemming from their lack of tissue selectivity.

关键词： Smart prodrug system Glutamineantagonists Immunotherapy Photodynamictherapy Reactive oxygen species Metabolicinhibitor Cyaninedye Non-small-cell lung cancer(NSCLC)

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Picosecond electrical response in graphene/MoTe_(2) heterojunction with high responsivity in the near infrared region

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Fundamental Research 2022年第3期2卷 405-411页

作者： Zhouxiaosong Zeng Kai Braun Cuihuan Ge Martin Eberle Chenguang Zhu Xingxia Sun Xin Yang jiali yi Delang Liang Yufan Wang Lanyu Huang Ziyu Luo Dong Li Anlian Pan Xiao Wang School of Physics and Electronics Hunan UniversityChangsha 410082China Institute of Physical and Theoretical Chemistry and LISA+ University of TübingenAuf der Morgenstelle 18Tübingen 72076Germany Key Laboratory for Micro-Nano Physics and Technology of Hunan Province College of Materials Science and EngineeringHunan UniversityChangsha 410082China

Understanding the fundamental charge carrier dynamics is of great significance for photodetectors with both high speed and high *** based on two-dimensional(2D)transition metal dichalcogenides can exhibit picosecond photoresponse ***,2D materials naturally have low absorption,and when increasing thickness to gain higher responsivity,the response time usually slows to nanoseconds,limiting their photodetection ***,by taking time-resolved photocurrent measurements,we demonstrated that graphene/MoTe_(2) van der Waals heterojunctions realize a fast 10 ps photoresponse time owing to the reduced average photocurrent drift time in the heterojunction,which is fundamentally distinct from traditional Dirac semimetal photodetectors such as graphene or Cd_(3)As_(2) and implies a photodetection bandwidth as wide as 100 ***,we found that an additional charge carrier transport channel provided by graphene can ef-fectively decrease the photocurrent recombination loss to the entire device,preserving a high responsivity in the near-infrared *** study provides a deeper understanding of the ultrafast electrical response in van der Waals heterojunctions and offers a promising approach for the realization of photodetectors with both high responsivity and ultrafast electrical response.

关键词： Two-dimension material Graphene/MoTe_(2)heterojunction Near infrared photodetector Scanning photocurrent microscopy Time-resolved photocurrent

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Risk of interstitial lung disease with the use of programmed cell death 1 (PD-1) inhibitor compared with programmed cell death ligand 1 (PD-L1) inhibitor in patients with breast cancer: A systematic review and meta-analysis

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Cancer Pathogenesis and Therapy 2024年第2期2卷 91-102页

作者： Lijuan Guo Xiaoyi Lin Xin Lin Yulei Wang jiali Lin yi Zhang Xiangqing Chen Miao Chen Guochun Zhang yifang Zhang Department of Breast Surgery Guangdong Provincial People's Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhouGuangdong 510000China Schol of Medicine South China University of TechnologyGuangzhouGuangdong 510000China Medical College Shantou UniversityShantouGuangdong 515000China The Second School of Clinical Medicine Southerm Medical UniversityGuangzhouGuangdong 510000China Department of Breast Cancer Guangdong Provincial People's Hospital's Nanhai HospitalFoshanGuangdong 528000China Department of Emergency Medicine Guangdong Provincial People's Hospitals Nanhai HospitalFoshanGuangdong 528000China

Background:Programmed cell death 1(PD-1)and programmed cell death ligand 1(PD-L1)inhibitors have become integral elements within the current landscape of breast cancer treatment modalities;however,they are associ-ated with interstitial lung disease(ILD),which is rare but potentially ***,only a few studies have compared the difference in ILD incidence between PD-1 and PD-L1 ***,this study aimed to assess the discrepancies regarding ILD risk between the two immune checkpoint *** also reported three cases of ILD after PD-1 inhibitor ***:We comprehensively searched PubMed,EMBASE,and the Cochrane Library to identify clinical trials that investigated PD-1/PD-L1 inhibitor treatment for patients with breast *** overall estimates of incidence and risk ratio(RR)were calculated with a 95%confidence interval(CI),and a mirror group analysis was per-formed using eligible ***:This meta-analysis included 29 studies with 4639 patients who received PD-1/PD-L1 inhibitor treatment.A higher ILD incidence was observed among 2508 patients treated with PD-1 inhibitors than among 2131 patients treated with PD-L1 inhibitors(0.05 vs.0.02).The mirror group analysis further revealed a higher ILD event risk in patients treated with PD-1 inhibitors than in those treated with PD-L1 inhibitors(RR=2.34,95%CI,1.13-4.82,P=0.02).Conclusion:Our findings suggest a greater risk of ILD with PD-1 inhibitors than with PD-L1 *** findings are instrumental for clinicians in treatment deliberations,and the adoption of more structured diagnostic approaches and management protocols is necessary to mitigate the risk of ILD.

关键词： Programmed cell death 1 inhibitor Programmed cell death ligand 1 inhibitor Interstitial lung disease Breast cancer Immune-related adverse events

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Infiltration by monocytes of the central nervous system and its role in multiple sclerosis: reflections on therapeutic strategies

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Neural Regeneration Research 2025年第3期20卷 779-793页

作者： Guangyong Zhang Qing Yao Chubing Long Pengcheng yi jiali Song Luojia Wu Wei Wan Xiuqin Rao Yue Lin Gen Wei Jun ying Fuzhou Hua Department of Anesthesiology the Second Affiliated Hospital of Nanchang UniversityNanchangJiangxi ProvinceChina Key Laboratory of Anesthesiology of Jiangxi Province NanchangJiangxi ProvinceChina

Mononuclear macrophage infiltration in the central nervous system is a prominent feature of neuroinflammation. Recent studies on the pathogenesis and progression of multiple sclerosis have highlighted the multiple roles of mononuclear macrophages in the neuroinflammatory process. Monocytes play a significant role in neuroinflammation, and managing neuroinflammation by manipulating peripheral monocytes stands out as an effective strategy for the treatment of multiple sclerosis, leading to improved patient outcomes. This review outlines the steps involved in the entry of myeloid monocytes into the central nervous system that are targets for effective intervention: the activation of bone marrow hematopoiesis, migration of monocytes in the blood, and penetration of the blood–brain barrier by monocytes. Finally, we summarize the different monocyte subpopulations and their effects on the central nervous system based on phenotypic differences. As activated microglia resemble monocyte-derived macrophages, it is important to accurately identify the role of monocyte-derived macrophages in disease. Depending on the roles played by monocyte-derived macrophages at different stages of the disease, several of these processes can be interrupted to limit neuroinflammation and improve patient prognosis. Here, we discuss possible strategies to target monocytes in neurological diseases, focusing on three key aspects of monocyte infiltration into the central nervous system, to provide new ideas for the treatment of neurodegenerative diseases.

关键词： blood–brain barrier macrophages monocytes multiple sclerosis neuroinflammation review therapy

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慈善捐赠、管理者乐观预期与企业过度投资——基于动态认知偏差视角

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管理工程学报 2024年第2期38卷 77-89页

作者：沈弋吕明晗朱佳立徐光华南京林业大学经济管理学院江苏南京210037 上海国家会计学院上海201702 南京理工大学经济管理学院江苏南京210094

企业慈善捐赠虽然改善了社会整体福利,也能为企业带来多重经济利益,但是其对管理决策所产生的心理效应却常常被忽略。本文采用2009-2019年民营上市公司数据,实证检验了企业慈善捐赠通过扰动管理者心理预期最终影响投资行为的过程。研究... 详细信息

企业慈善捐赠虽然改善了社会整体福利,也能为企业带来多重经济利益,但是其对管理决策所产生的心理效应却常常被忽略。本文采用2009-2019年民营上市公司数据,实证检验了企业慈善捐赠通过扰动管理者心理预期最终影响投资行为的过程。研究发现,慈善捐赠水平较高的企业也更容易过度投资,并且,基于动态认知偏差理论,我们发现管理者过度乐观的认知偏差在慈善捐赠与过度投资之间起到了中介作用,上述关系在经过一系列稳健性检验之后依然成立。在进一步分析中我们发现,上述乐观预期不仅体现在企业投资领域,慈善捐赠较多的公司在研发创新以及市场拓展等方面也更加激进。研究结论拓展了企业慈善捐赠后续效应的相关研究视阈,同时也为企业过度投资的产生机理提供了新的路径解释。

关键词：慈善捐赠认知偏差过度投资乐观预期

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NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

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Neural regeneration research 2024年第7期20卷 2024 Jul 10页

作者： Zhihao Lin Changzhou ying Xiaoli Si Naijia Xue yi Liu Ran Zheng ying Chen jiali Pu Baorong Zhang Department of Neurology The Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou Zhejiang Province China.

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra compacta. Ferroptosis, a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation, plays a vital role in the death of dopaminergic neurons. However, the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely elucidated. NADPH oxidase 4 is related to oxidative stress, however, whether it regulates dopaminergic neuronal ferroptosis remains unknown. The aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis, and if so, by what mechanism. We found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an l-methyl-4-phenyl-l,2,3,6 tetrahydropyridine-induced Parkinson's disease model. NADPH oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic neurons. Moreover, NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model animals. Mechanistically, we found that NADPH oxidase 4 interacted with activated protein kinase C α to prevent ferroptosis of dopaminergic neurons. Furthermore, by lowering the astrocytic lipocalin-2 expression, NADPH oxidase 4 inhibition reduced l-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced neuroinflammation. These findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation, which contribute to dopaminergic neuron death, suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease

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