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Poly(3-hexylthio) thiophene Field-effect Transistor Device Performance: Impact of the Content of Hexylthio Side Chain on Backbone

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Chinese Journal of Polymer Science 2024年第1期42卷 14-23,I0005页

作者： Hao-Yu Liu Lian-He Han ling-wei kong Li-Ping Zhu Xiao-Lan Qiao Mei-Fang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Regioregular poly(3-hexylthio)thiopene(P3HTT) has emerged tremendous potential in organic electronic applications due to the strong noncovalent interactions from the sulfur atom linked to thiophene. However, P3HTT generally exhibits low charge mobility mostly due to poor solution processability attributed to dense arrangement of hexylthio side chain in polymer, which led to strong noncovalent interactions among sulfur atoms. To balance the nonvalent interaction and aggregation for P3HTT, herein, we systematically study the effect of hexylthio side chain content in polymer backbone on the structure and properties. A series of regioregular P3HTT-based homopolymers(P3HTT, P3HTT-50,P3HTT-33 and P3HTT-25) were prepared via Kumada catalyst transfer polycondensation method from a set of mono-, bi-, ter-and quarterthiophenes containing different contents of hexylthio side chain. The DFT calculation shows the planarity of polymers backbone could be improved through reducing the density of hexylthio side chain in polymer mainchain. And significant changes in their crystallinity, aggregation and optical properties were observed with the content of hexylthio side chain reducing. The P3HTT-33 displayed the highest field-effect transistor hole mobility of 2.83×10^(-2) cm^(2)·V^(-1)·s^(-1) resulting from a balance between the crystallinity and planarity. This study demonstrates modulating the content of hexylthio side chain in P3HTT is an effective strategy to optimize the opto-electronic properties of polymer obtaining excellent semiconductor device performance.

关键词： Conjugated polymer Polythiophene Noncovalent interaction Molecular aggregation Organic field-effect transistor

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Total removal of a large esophageal schwannoma by submucosal tunneling endoscopic resection:A case report and review of literature

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World Journal of Clinical Cases 2023年第11期11卷 2510-2520页

作者： Yu-Zhu Mu Qi Zhang Jing Zhao Yan Liu ling-wei kong Zhong-Xiang Ding Department of Radiology The Fourth School of Clinical MedicineZhejiang Chinese Medical UniversityHangzhou 310006Zhejiang ProvinceChina Department of Radiology Affiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhou 310006Zhejiang ProvinceChina Department of Radiology The First Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhou 310006Zhejiang ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhou 310006Zhejiang ProvinceChina Department of Pathology The First Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhou 310006Zhejiang ProvinceChina

BACKGROUND Primary schwannoma is a rare submucosal tumor of the esophagus,which is most often benign,and surgery is the only effective *** far,only a few cases have been ***,we reported a single case diagnosed with primary esophageal schwannoma that was totally removed by submucosal tunneling endoscopic resection(STER).CASE SUMMARY A 62-year-old man presented to the hospital with a history of resection of a malignant gastric tumor and mild *** examination revealed a large submucosal elevated lesion in the esophagus 25-30 cm from the *** ultrasonography detected a 45 mm×35 mm×31 mm hypoechoic lesion;chest computed tomography showed a mass of approximately 55 mm×35 mm×29 mm.A preliminary examination showed features suggestive of a stromal *** findings indicated esophageal ***,STER alone was performed to completely resect the mass,and the patient recovered well ***,the patient was discharged and showed no tumor recurrence at 33 mo of *** Endoscopic resection is still an effective treatment for large esophageal schwannomas(>30 mm)under meticulous morphological evaluation.

关键词： Esophageal schwannoma Submucosal tunneling endoscopic resection S100 Submucosal Case report

Circulating metabolites difference in type 2 diabetes patients from regions:a cross-sectional study

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Medical Data Mining 2024年第4期7卷 1-9页

作者： Jiang-Lan Long Zeng-Hui Miao ling-wei kong Hui-Jing Cui Na-Na Zhang Dan Yan Beijing Institute of Clinical Pharmacy Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China Clinical laboratory Beijing Jiaotong University Community Health CenterBeijing 100044China Department of Pharmacy Kaifeng Hospital of Traditional Chinese MedicineKaifeng 475000China

Background:Type 2 diabetes(T2D)has already become a global *** its simple,rapid,economical,and relatively non-invasive,metabolic markers have become a method for T2D ***,region,race,and diet all affect the metabolism of the *** purpose of current study is to explore the differences of metabolites in T2D patients from ***:We recruited 103 T2D patients in two clinical centers,including 52 T2D patients from Beijing(T2D_(B))and 51 T2D patients from Kaifeng(T2D_(K)).The serum samples from T2D patients were analyzed using high-resolution mass *** screened using univariate and multivariate analysis,the differential metabolites were ***,to reveal biological information,we performed pathway analysis with the differential ***:Thirty-six differential metabolites were identified,including 16 metabolites were higher concentrations while 20 metabolites were lower concentrations in the serum of T2D_(B) patients than T2D_(K) *** were higher serum concentrations of L-phenylalanine,4-methyl-2-oxovaleric acid,L-carnitine,decanoylcarnitine,9-decenoylcarnitine and sphinganine in T2D_(B) patients,in which decanoylcarnitine in T2D_(B) patients was up to 35-fold higher than T2D_(K) *** there were lower concentrations of L-valine,L-isoleucine,arachidonic acid,oleic acid,16-hydroxyhexadecanoic acid,lysophosphatidylcholine(18:0)and 1-Phenylethylamine in T2D_(B) patients,in which 1-phenylethylamine in T2D_(B) patients was decreased to 0.45-fold lower than T2D_(K) *** reason for the differences might be that phosphatidylethanolamine biosynthesis,phosphatidylcholine biosynthesis,valine,leucine and isoleucine degradation,and beta-oxidation of very long chain fatty acids were different in T2D_(B) patients and in T2D_(K) ***:Metabolites from different pathways are independently related to regions,providing valuable insight and potential for the diagnosis and treatment

关键词： type 2 diabetes metabolomics region high-resolution mass spectrometer

Maternal zinc deficiency impairs brain nestin expression in prenatal and postnatal mice

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Cell Research 2001年第2期11卷 135-141页

作者： WANG FU DI, wei BIAN, ling wei kong, FA JI ZHAO, JUN SHENG GUO, NAI HE JINGI Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yue Yang Road, Shanghai 200031, China Department of Publ Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China Department of Public Health Second Military Medical University Shanghai China

Effects of maternal dietary zinc deficiency on prenatal and postnatal brain development were investigated in ICR strain mice. From d 1 of pregnancy (EO) until postnatal d 20 (P20), maternal mice were fed experimental diets that contained 1 mg Zn/kg/day (severe zinc deficient, SZD), 5 mg Zn/kg/day (marginal zinc deficient, MZD), 30 mg Zn/kg/day (zinc adequately supplied, ZA) or 100 mg Zn/kg/day (zinc supplemented, ZS and pair-fed, PF). Brains of offspring from these dietary groups were examined at various developmental stages for expression of nestin, an intermediate filament protein found in neural stem cells and young neurons. Immunocytochemistry showed nestin expression in neural tube 10. 5 d post citrus (dpc) as well as in the cerebral cortex and neural tube from 10.5 dpc to postnatal d 10 (P10). Nestin immunoreactivities in both brain and neural tube of those zinc-supplemented control groups (ZA, ZS, PF) were stronger than those in zinc-deficient groups (SZD and MZD). Western blot analysis confirmed that nestin levels in -pooled brain extracts from each of the zinc-supplemented groups (ZA, ZS, PF) were much higher than those from the zinc-deficient groups (SZD and MZD) from 10.5 dpc to P10. Immunostaining and Western blots showed no detectable nestin in any of the experimental and control group brains after P20. These observations of an association between maternal zinc deficiency and decreased nestin protein levels in brains of offspring suggest that zinc deficiency suppresses development of neural stem cells, an effect which may lead to neuroanatomical and behavioral abnormalities in adults.

关键词： Zinc deficiency nestin brain development neural stem cells.

A low redox potential and long life organic anode material for sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： Zhi Li Yang wei Kang Zhou Xin Huang Xing Zhou Jie Xu Taoyi kong Junwei Lucas Bao Xiaoli Dong Yonggang Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （ling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

丙烯酸聚氧乙烯酯单体接枝聚乙烯共聚物的制备与表征

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高分子学报 2015年第9期25卷 1070-1077页

作者：侯甲子张万喜孔令薇李莉莉吉林大学材料科学与工程学院汽车材料教育部重点实验室长春130025

采用含α-双键的4种不同结构的聚氧乙烯型单体:丙烯酸聚氧乙烯酯(PAA)、丙烯酸端甲氧基聚氧乙烯酯(PEA)、甲基丙烯酸聚氧乙烯酯(PMA)和甲基丙烯酸端甲氧基聚氧乙烯酯(PMEM)接枝改性线性低密度乙烯(LLDPE)和低分子量聚乙烯(LMPE).采用核... 详细信息

采用含α-双键的4种不同结构的聚氧乙烯型单体:丙烯酸聚氧乙烯酯(PAA)、丙烯酸端甲氧基聚氧乙烯酯(PEA)、甲基丙烯酸聚氧乙烯酯(PMA)和甲基丙烯酸端甲氧基聚氧乙烯酯(PMEM)接枝改性线性低密度乙烯(LLDPE)和低分子量聚乙烯(LMPE).采用核磁共振波谱及红外光谱分析了接枝共聚物的结构,并研究了接枝单体中聚氧乙烯基团对接枝共聚物性能的影响.相同单体浓度下4种单体的接枝效率大小顺序为PAA>PEA>PMA>PMEM.对产物流变性能的研究结果表明随着接枝率的增加,单体复合黏度和剪切变稀行为增加;示差量热扫描结果显示了接枝率较低时接枝单体起到异相成核作用而加速结晶.为了进一步观察接枝单体对聚乙烯链段微观结构的影响,通过偏光显微镜观察发现LMPE为短棒状结构,而接枝LMPE通过支链极性基团的相互作用而形成星形或树枝状的微胶束结构.接触角测试表明,与LLDPE相比,高接枝率的LMPE改善亲水性的效果更好.

关键词：聚乙烯丙烯酸聚氧乙烯酯单体流变结晶

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Micro-strain regulation strategy to stabilize perovskite lattice based on the categories and impact of strain on perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 578-604页

作者： Caixia Li Wenwu Liu Shiji Da lingbin kong Fen Ran State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology School of Materials Science and Engineering Lanzhou University of Technology

Photovoltaic metal halide perovskite solar cells(PSCs) convert light to electricity more efficiently than crystalline silicon cells, and the cost of materials used to make them is lower than that of silicon *** efficiency is not a core issue affecting the application of perovskite solar cells in special *** present, stability is the major technical encounters that hinders its further commercial development. Microstrain in PSCs is currently a significant factor responsible for the device's instability. Strain-induced ion migration is widely believed to accelerate perovskite degradation even when external stimuli are ***, it is imperative to study strain to enhance the stability of PSCs. This paper reviews recent developments to understand strain's origin and effect mechanisms on performance of PSCs, including ion migration,failure behavior, defect formation, and its effect on photoelectric properties, stability, and ***, several well-known strain management strategies are systematically introduced based on the strain effect mechanism and strain engineering on the film, providing more clues for further preparation with increased stability. The manipulation of external physical strain applied from films to entire devices has been extensively studied. Furthermore, recommendations for future research directions and chemical approaches have been provided. It is emphasized that strain engineering plays a crucial role in improving the efficiency and longevity of PSCs. Tensile strain causes rapid degradation, while moderate compressive strain and external strain control could improve properties and stability. Efforts should focus on controlling compressive strain to mitigate residual tensile strain and introducing it in a controlled manner. Future research endeavors may focus on exploring these pathways to improve the efficiency and lifespan of PSCs.

关键词： Halide perovskite solar cells Strain origins Strain effects Strain management

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杭州市家蝇乙酰胆碱酯酶活性调查

中国媒介生物学及控制杂志 2017年第4期28卷 381-382,395页

作者：陈冰冰韦凌娅孔庆鑫杭州市疾病预防控制中心消毒监测与病媒生物防制所杭州310000

目的了解杭州市家蝇乙酰胆碱酯酶(AChE)活性,分析其与残杀威高抗的相关性。方法采用点滴法测定家蝇对残杀威的抗药性表型,利用比色法测定家蝇现场种群与敏感品系的AChE水解活性及家蝇现场种群的残存活性。结果家蝇现场种群的半数致死量(... 详细信息

目的了解杭州市家蝇乙酰胆碱酯酶(AChE)活性,分析其与残杀威高抗的相关性。方法采用点滴法测定家蝇对残杀威的抗药性表型,利用比色法测定家蝇现场种群与敏感品系的AChE水解活性及家蝇现场种群的残存活性。结果家蝇现场种群的半数致死量(LD_(50))>400μg/只,抗性倍数>2 500倍;家蝇敏感品系和现场种群的AChE水解活性分别为(0.291±0.114)和(0.360±0.104)μmol/(mg·min),差异有统计学意义(t=2.692,P=0.009);现场种群对残杀威的不敏感个体在种群中的比例为38.89%。结论杭州市家蝇现场种群AChE的生化特性较敏感品系发生了较大改变,AChE水解活性升高,对残杀威的敏感度降低,提示其可能是导致杭州市家蝇现场种群对残杀威产生高抗的主要原因。

关键词：家蝇乙酰胆碱酯酶残杀威残存活性

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Dynamic Interaction Analysis of Coupled Axial-Torsional-Lateral Mechanical Vibrations in Rotary Drilling Systems

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Structural Durability & Health Monitoring 2025年第1期19卷 77-103页

作者： Sabrina Meddah Sid Ahmed Tadjer Abdelhakim Idir kong Fah Tee Mohamed Zinelabidine Doghmane Madjid Kidouche Applied Automation Laboratory Faculty of Hydrocarbons and ChemistryUniversity of BoumerdesBoumerdes35000Algeria Institute of Electrical and Electronic Engineering(IGEE) University of BoumerdesBoumerdes35000Algeria Laboratory of the Electrification of Industrial Enterprises University of BoumerdesBoumerdes35000Algeria Electrical Engineering Department Mohamed Boudiaf University of M’silaM’sila28000Algeria Department of Civil and Environmental Engineering King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Interdisciplinary Research Center for Construction and Building Materials King Fahd University of Petroleum&Minerals(KFUPM)Dhahran31261Saudi Arabia

Maintaining the integrity and longevity of structures is essential in many industries,such as aerospace,nuclear,and *** achieve the cost-effectiveness of large-scale systems in petroleum drilling,a strong emphasis on structural durability and monitoring is *** study focuses on the mechanical vibrations that occur in rotary drilling systems,which have a substantial impact on the structural integrity of drilling *** study speciﬁcally investigates axial,torsional,and lateral vibrations,which might lead to negative consequences such as bit-bounce,chaotic whirling,and high-frequency *** events not only hinder the efﬁciency of drilling but also lead to exhaustion and harm to the system’s components since they are difﬁcult to be detected and controlled in real *** study investigates the dynamic interactions of these vibrations,speciﬁcally in their high-frequency modes,usingﬁeld data obtained from measurement while ***ﬁndings have demonstrated the effect of strong coupling between the high-frequency modes of these vibrations on drilling sys-tem *** obtained results highlight the importance of considering the interconnected impacts of these vibrations when designing and implementing robust control ***,integrating these compo-nents can increase the durability of drill bits and drill strings,as well as improve the ability to monitor and detect ***,by exploiting theseﬁndings,the assessment of structural resilience in rotary drilling systems can be ***,the study demonstrates the capacity of structural health monitoring to improve the quality,dependability,and efﬁciency of rotary drilling systems in the petroleum industry.

关键词： Rotary drilling systems mechanical vibrations structural durability dynamic interaction analysis ﬁeld data analysis