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Subtle Alignment of Organic Semiconductors at the Donor/Acceptor Heterojunction Facilitates the Photoelectric Conversion Process

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Chinese Journal of Polymer Science 2022年第8期40卷 951-959,I0010页

作者： Yu-Xuan Liu Liang Wang Ke Zhou Hong-Bo Wu Xiao-Bo Zhou Zai-fei ma Sheng-Wei Guo Wei ma State Key Laboratory for Mechanical Behavior of materials Xi’an Jiaotong UniversityXi’an710049China School of materials Science&Engineering North Minzu UniversityYinchuan750021China Center for Advanced Low-dimension materials State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai201620China

The aligned molecular packing structure is vital to the anisotropic charge transport in conjugated polymer and small molecule thin ***,how this molecular packing motif influences the photoelectric conversion process at the donor/acceptor heterojunction is still ***,we employed a PM6/Y6 bilayer model to investigate the long-range alignment of molecular packing induced photoelectric conversion *** PM6 and Y6 layers were properly controlled to exhibit the uniaxially oriented molecular packing compared to their as-cast counterparts,as revealed by the polarized absorption spectra and transmission electron *** analyzing the photovoltaic performance of bilayer devices,the smaller energy loss,lower energetic disorder,and longer charge carrier lifetime can be observed in the bilayer devices with aligned Y6 molecules,which contribute to a higher power conversion efficiency(PCE)than the as-cast *** the molecular packing structure of PM6 layer exhibited negligible influence on the device performance,probably resulting from the intrinsic semicrystalline nature of PM6 *** results indicate that the alignment of small molecular acceptor at the donor/acceptor interfaces should be a powerful strategy to facilitate the photoelectric conversion process,which will definitely pave the way to highly efficient bulk heterojunction photovoltaic device.

关键词： Molecular packing Photoelectric conversion process Planar heterojunction Organic solar cells

Integrative analyses identified gap junction beta‐2 as a prognostic biomarker and therapeutic target for breast cancer

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Cancer Innovation 2024年第4期3卷 43-56页

作者： Di Zhang Lixi Li fei ma Department of Medical Oncology Qilu Hospital of Shandong UniversityJinanChina Department of Medical Oncology Qilu HospitalCheeloo College of MedicineShandong UniversityJinanChina Department of Medical Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina

Background:Increasing evidence has shown that connexins are involved in the regulation of tumor development,immune escape,and drug *** study investigated the gene expression patterns,prognostic values,and potential mechanisms of connexins in breast ***:We conducted a comprehensive analysis of connexins using public gene and protein expression databases and clinical samples from our *** mRNA expressions in breast cancer and matched normal tissues were compared,and multiomics studies were ***:Gap junction beta‐2 mRNA was overexpressed in breast cancers of different pathological types and molecular subtypes,and its high expression was associated with poor *** tumor membrane of the gap junction beta‐2 mutated group was positive,and the corresponding protein was *** mutation and copy number variation of gap junction beta‐2 are rare in breast *** gap junction beta‐2 transcription level in the p110αsubunit of the phosphoinositide 3‐kinase mutant subgroup was higher than that in the wild‐type *** junction beta‐2 was associated with the phosphoinositide 3‐kinase‐Akt signaling pathway,extracellular matrix–receptor interaction,focal adhesion,and proteoglycans in ***,gap junction beta‐2 overexpression may be associated with phosphoinositide 3‐kinase and histone deacetylase inhibitor resistance,and its expression level correlated with infiltrating CD8+T cells,macrophages,neutrophils,and dendritic ***:Gap junction beta‐2 may be a promising therapeutic target for targeted therapy and immunotherapy and may be used to predict breast cancer prognosis.

关键词： breast cancer connexin gap junction beta‐2 phosphoinositide 3‐kinase‐Akt‐mTOR pathway prognosis

Chinese expert consensus on an innovative patient‐centered approach to diagnosis and treatment of cancer

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Cancer Innovation 2024年第5期3卷 50-70页

作者： Hongnan Mo Ruiqi Zhong fei ma Department of Medical Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina +4 Medical Doctor Program Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingChina

Patient‐centered care(PCC)is an innovative approach to the diagnosis and treatment of malignancy that aims to improve patients'experience during the management of their ***,despite growing interest,the concept and specifics of PCC remain *** consensus document addresses this gap by providing a literature review and a clear definition of PCC and outlines its main components as observed in real‐world *** components include daytime diagnostic and treatment procedures,in‐hospital and community‐based infusion centers,home‐based diagnostic and treatment services,smart healthcare solutions,and integration of traditional Chinese *** document delves into the implementation of PCC and explores its potential benefits.

关键词： cancer consensus management patient‐centered care quality of life

An efficient and facile procedure for synthesis of octyl polyglucoside

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Chinese Chemical Letters 2007年第10期18卷 1173-1175页

作者： Ying Wu Jiu Gao Yu Xiao fei ma Jian She Zhang Department of Chemistry School of Science Tianjin University Tianjin 300072 China

Nonionic surfactant alkyl polyglucoside （APG） was prepared by direct glycosidation of alkyl alcohol with glucose in the presence of sulfate acid-silica gel （H2SO4/SiO2） as solid acidic catalyst. The quantity of catalyst was only of 1 wt%, based on the glucose, and the conversion of glucose was close to 100% at 110 ℃ in 1.5 h. The product was characterized by FT-IR, mass and ^1H NMR spectra. The degree of polymerization （DP） of the glucose in the product was 1.37, and critical micelle concentration （CMC） of product was only 0.0104 wt%.

关键词： Alkyl polyglucoside Sulfate acid-silica gel Solid acidic Catalyst

Synthesis of aliphatic amidediol and used as a novel mixed plasticizer for thermoplastic starch

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Chinese Chemical Letters 2008年第4期19卷 395-398页

作者： Jian She Zhang Jiu Gao Yu Ying Wu Xiao fei ma School of Science Tianjin UniversityTianjin 300072PR China

In this paper,aliphatic amidediol was synthesized and mixed with glycerol used as a plasticizer for preparing thermoplastic starch（AGPTPS）.The yield of aliphatic amidediol was 91%.FF-IR expressed that the mixture of aliphatic amidediol and glycerol formed stronger and stable hydrogen bond with starch molecules compared to the native *** scanning electron microscope（SEM）native cornstarch granules were proved to transfer to a homogeneous continuous *** being stored for a period time at room temperature,the mechanical properties of AGPTPS were also *** a mixed plasticizer,aliphatic amidediol and glycerol would be practical to extend TPS application scopes.

关键词： Thermoplastic starch Aliphatic amidediol Glycerol Plasticizer

Surface-enhanced Raman nanoparticles for tumor theranostics applications

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Acta Pharmaceutica Sinica B 2018年第3期8卷 349-359页

作者： Yangyang Li Qiaolin Wei fei ma Xin Li Fengyong Liu Min Zhou Department of Nuclear Medicine & Key Laboratory of Cancer Prevention and Intervention National Ministry of Education The Second Affiliated Hospital School of Medicine Zhejiang University Institute of Translational Medicine Zhejiang University Department of Interventional Radiology Chinese PLA General Hospital State Key Laboratory of Modern Optical Instrumentations Zhejiang University

Raman spectroscopy, amplified by surface-enhanced Raman scattering(SERS) nanoparticles,can provide an in vivo imaging modality due to its high molecular specificity, high sensitivity, and negligible autofluorescence. The basis, composition, and methodologies developed for SERS nanoparticles are herein described. The research hotspots that are the focus in this paper are tumor imaging-guided theranostics and biosensing. The next breakthrough may be the development of biocompatible SERS nanoparticles and spectroscopic devices for clinical applications.

关键词： Raman spectroscopy SERS Cancer imaging Nanoparticles Theranostics

Helicobacter pylori and 17β-estradiol induce human intrahepatic biliary epithelial cell abnormal proliferation and oxidative DNA damage

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Hepatobiliary & Pancreatic Diseases International 2017年第5期16卷 519-527页

作者： fei ma Yong Yang Jian-Dong Wang Zhi-Wei Quan Di Zhou Department of Oncology Xinhua Hospital Shanghai Jiaotong University School of Medicine Department of General Surgery Shanghai Jiaotong University School of Medicine

BACKGROUND: Biliary cancers are more common in females, and previous studies have suggested that Helicobacter pylori (H. pylori) exists in the biliary system. However, the effects of H. pylori infection and estrogen on the biological behaviors of human biliary epithelium mucosa remain unknown. The present study aimed to clarify their effects on the proliferation, apoptosis, migration and oxidative DNA damage of a human intrahepatic biliary epithelial cell (HIBEC) line in vitro. METHODS: HIBECs were co -cultured with 17 beta-estradiol (at 10(-9) mol/L, 10(-7) mol/L, and 10(-5) mol/L) and H. pylori (at MOI=0.5:1, 1:1, and 2:1) and continuously passaged until the 15th generation (approximately 45 days). Then, the following assays were performed. HIBEC proliferation was measured using the CCK-8 assay, plate clone-formation assay and by determining Ki-67 expression with immunocytochemistry; cell apoptosis and migration were investigated using Annexin-V/PI and transwell assays, respectively; and reactive oxygen species (ROS) and 8-hydroxy-2'-deoxyguanosine (8-OHdG) production were detected by flow cytometry and immunofluorescence staining combined with confocal laser scanning microscopy, respectively. The results were the basis for evaluating the level of oxidative stress and the related DNA damage in HIBECs. RESULTS: HIBECs maintained a normal morphology and vitality when treated with 17 beta-estradiol (at 10(-9) mol/L) and H. pylori (at MOI=0.5:1 and 1:1). 17 beta-estradiol at 10(-7) mol/L and 10(-5) mol/L and H. pylori at MOI=2:1, by contrast, caused cell death. Compared with controls, HIBECs treated with 17 beta-estradiol (10(-9) mol/L) and H. pylori (MOI=1:1) had a higher up-regulation of proliferation, Ki-67 expression, clone formation, migration activity and the expression of ROS and 8-OHdG and exhibited a down-regulation of apoptosis. The above effects were further increased when 17 beta-estradiol and H. pylori were combined (P<0.05). CONCLUSIONS: H. pylori and 17

关键词： H. pylori 17 beta-estradiol binary tract proliferation

Migration of weakly bonded oxygen atoms in a-IGZO thin films and the positive shift of threshold voltage in TFTs

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Chinese Physics B 2022年第9期31卷 397-403页

作者： Chen Wang Wenmo Lu Fengnan Li Qiaomei Luo fei ma State Key Laboratory for Mechanical Behavior of materials Xi'an Jiaotong UniversityXi'an 710049China

Amorphous indium-gallium-zinc oxide(a-IGZO)thin films are prepared by pulsed laser deposition and fabricated into thin-film transistor(TFT)***-situ x-ray photoelectron spectroscopy(XPS)illustrates that weakly bonded oxygen(O)atoms exist in a-IGZO thin films deposited at high O_(2) pressures,but these can be eliminated by vacuum *** threshold voltage(V_(th))of the a-IGZO TFTs is shifted under positive gate bias,and the Vth shift is positively related to the deposition pressure.A temperature variation experiment in the range of 20 K-300 K demonstrates that an activation energy of 144 meV is required for the Vth shift,which is close to the activation energy required for the migration of weakly bonded O atoms in a-IGZO thin ***,the Vth shift is attributed to the acceptor-like states induced by the accumulation of weakly bonded O atoms at the a-IGZO/SiO_(2) interface under positive gate *** results provide an insight into the mechanism responsible for the Vth shift of the a-IGZO TFTs and help in the production of reliable designs.

关键词： a-IGZO thin films weakly bonded O atoms threshold voltage shift

A Method to Prepare Nano-sized Copper Particles and Rods on the Surface of Cu Composite Films

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稀有金属材料与工程 2012年第S1期41卷 113-115页

作者： Sun Haoliang Ming, Wei Zhan Jingmei Song Zhongxiao fei, ma Xu Kewei Henan Univ Sci & Technol Sch Mat Sci & Engn Luoyang 471003 Peoples R China Xi An Jiao Tong Univ State Key Lab Mech Behav Mat Xian 710049 Peoples R China

Nano-sized Copper(Cu)particles and rods were prepared by annealing Cu-Zr,and Cu-Al-Zr composite films on polyimide ***,FESEM and EDS were used to characterize their microstructure and *** show that faceted Cu particles are regular and pure Cu ***,it was interesting to find that Cu nanorods might appear on the surface of annealed Cu-Al-Zr composite thin *** on the experimental results and analysis,it were speculated that these Cu particles are single *** particle average sizes are closely related to the content of Zr as well as annealing temperature and *** work may provide a new approach to prepare metal particles and nanorods on the surface of Cu composite films on polyimide substrates.

关键词： Cu composite films anneal stress relaxation particles nanorods