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Chinese Journal of Polymer Science 2007年第2期25卷 221-226页

作者： qian yang jing tian zhi-kang xu Institute of Polymer Science and Key Laboratory of Macromolecule Synthesis and Functionalization （Ministry of Education） Zhejiang University Hangzhou 310027 China

Ultraviolet （UV）-induced graft polymerization of acrylamide （AAm） on polypropylene substrates was successfully conducted using dibenzyl trithiocarbonate （DBTTC） as photoinitiator. It was confirmed by chemical analysis and surface morphology observation with attenuated total reflectance Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. A possible mechanism for this graft process was presented, which suggested that, under UV irradiation, the C： S bond in DBTTC could split and abstract a hydrogen from the polypropylene surface and a surface free radical was then formed, and initiated the graft polymerization of AAm.

关键词： Graft polymerization Surface modification Acrylamide Trithiocarbonate UV.

Mechanism of action of Linggui Zhugan Decoction in treating non-alcoholic fatty liver disease using untargeted metabolomics approach

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Traditional Medicine Research 2025年第2期10卷 65-76页

作者： Huan Pei Ren-Lin Li Xin-Ran Song qian-qian Wan Yu-Ming Wang Han-Zhou Li Wei-Quan xu Jia-Bao Liao Wei-Bo Wen jing Miao Huan-tian Cui School of Basic Medicine Yunnan University of Chinese MedicineKunming 650599China School Clinical Medical College Yunnan University of Chinese MedicineKunming 650599China First School of Clinical Medicine Yunnan University of Chinese MedicineKunming 650599China School of Integrative Chinese and Western Medicine Tianjin University of Traditional Chinese MedicineTianjin 301617China Department of Pharmacy Tianjin Second People's HospitalTianjin 300192China

Background:Non-alcoholic fatty liver disease(NAFLD)is a liver disorder characterized by the accumulation and degeneration of fat in the liver cells,a condition that may further deteriorate and lead to cirrhosis and liver *** studies showed that metabolic dysfunction can promote NAFLD *** Zhugan Decoction(LGZGD)has therapeutic effects on *** mechanism of LGZGD still remains *** study was to examine the impact of LGZGD on the metabolic processes involved in the development of ***:A mice model of NAFLD was treated with *** therapeutic potential of LGZGD was evaluated by assessing the activity of transaminases,lipids levels of blood,and pathological changes in the liver of the mice model of ***,this study also evaluated the influence of LGZGD on liver inflammation and oxidative ***:The results of untargeted metabolomics analysis showed that LGZGD reduced the disordered lipid metabolism in NAFLD *** improved the oxidative stress and also reduced the levels of pro-inflammatory cytokines in the *** metabolomics analysis of liver samples revealed that LGZGD treatment improved metabolic disorders,including alanine,aspartate,glutamate,glycerophospholipid metabolism,and citrate *** RT-qPCR and Western blot results showed that LGZGD could regulate the expression of key enzymes in the metabolic pathway of the citrate cycle,including ATP-citrate lyase(ACLY),alanine-glyoxylate aminotransferase-2(AGXT2),phosphatidylethanolamine N-methyltransferase(PEMT),and succinate dehydrogenase(SDH).Conclusion:We found that LGZGD can treat NAFLD by reducing inflammatory responses,inhibiting oxidative stress,regulating alanine,aspartate,glutamate,and glycerophospholipid metabolism,and citrate cycle pathways.

关键词： NAFLD LGZGD untargeted metabolomics glycerophospholipid metabolism citrate cycle

NIR Emission Nanoparticles Based on FRET Composed of AIE Luminogens and NIR Dyes for Two-photon Fluorescence Imaging

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Chinese Journal of Polymer Science 2019年第4期37卷 401-408,I0007页

作者： Lei-jing Liu Wen Liu Guang Jia zhi-Yuan Wu Bin xu Jun qian Wen-jing tian State Key Lab for Supramolecular Structure and Materials Jilin University State Key Laboratory of Modern Optical Instrumentations Centre for Optical and Electromagnetic ResearchJORCEP (Sino-Swedish Joint Research Center of Photonics)Zhejiang University

Near-infrared(NIR) nanoparticles(NPs) based on fluorescence resonance energy transfer(FRET) were prepared by coencapsulation of a red aggregation-induced emission(AIE) molecule, 2-(4-bromophenyl)-3-(4-(4-(diphenylamino)styryl)phenyl)fumaronitrile(TB), and a commercial NIR fluorescence dye, silicon 2,3-naphthalocyanine bis(trihexylsilyloxide)(NIR775) with an amphiphilic polymer poly(styrene-co-maleic anhydride)(PSMA). The surface of the NPs, PSMA@TB/NIR775, was modified with poly(ethylene glycol)(PEG) to increase the in vivo biocompatibility of the NPs. The PSMA@TB/NIR775 NPs showed a strong NIR(780 nm) narrow emission and excellent two-photon absorption property. Moreover, the NPs exhibited good monodispersity, stability, and low *** the excitation of a 1040 nm femtosecond(fs) laser, the emission peaks at 680 nm of TB and 780 nm of NIR775 excited by FRET were obtained. We utilized PSMA@TB/NIR775 NPs as fluorescent contrast agents for two-photon excited NIR microscopic imaging, and good NIR imaging effect of mouse brain vasculature was obtained with the imaging depth of about 150 μm. The FRET strategy by coencapsulating AIE molecule and NIR dye will be helpful in preparing more narrow emission NIR probes for deep-tissue biological imaging.

关键词： NIR emission AIE FRET Two-photon imaging Amphiphilic polymer

A 4-aminonaphthalimide based environmentally sensitive fluorescence probe

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Chinese Chemical Letters 2013年第5期24卷 359-361页

作者： zhi-Yong Wu jing-Nan Cui xu-Hong qian tian-Yu Liu State Key Laboratory of Fine Chemicals Dalian University of Technology Shanghai Key Laboratory of Chemical Biology East China University of Science and Technology

A simply synthesized 4-aminonaphthalimide derivative 1 expresses both polarity and viscosity sensitive fluorescence spectra,indicating its potential usage as an environmentally sensitive fluorescence probe. By comparing the fluorescence behavior of 1 with that of a known 4-aminonaphthalimide derivative 2,it was found that the substitution of the 4-amino group has profound influence on the environmentally sensitive fluorescence properties of 4-aminonaphthalimide.

关键词： 4-Aminonaphthalimide Environmentally sensitive Fluorescence probe Substitution effects

A Conjugated Copolymer Bearing Imidazolium-based Ionic Liquid:Electrochemical Synthesis and Electrochromic Properties

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Chinese Journal of Polymer Science 2021年第5期39卷 537-544,I0005页

作者： Xiao-jing Lv Li-Bin xu Liang qian Yuan-Yuan yang zhi-Yi xu Jin Li Cheng Zhang International Sci.&Tech.Cooperation Base of Energy Materials and Application College of Chemical EngineeringZhejiang University of TechnologyHangzhou 310014China

An imidazolium-based ionic liquid(IL)modified triphenylamine derivative,namely 1-(4-((4-(diphenylamino)benzoyl)oxy)butyl)-3-methyl imidazole tetrafluoroborate(TPAC_(6)IL-BF_(4)),was designed and synthesized,and further applied with 3,4-ethylene dioxythiophene(EDOT)to prepare conjugated copolymer P(EDOT:TPAC_(6)IL-BF_(4)) via electrochemical *** cyclic voltammetry curves show that the copolymer P(EDOT:TPAC_(6)IL-BF_(4))possesses two pairs of redox peaks,which should be ascribed to the redox behaviors of EDOT and *** ultraviolet-visible(UV-Vis)absorption spectrum of P(EDOT:TPAC_(6)IL-BF_(4))exhibits one maximum absorption peak at 580 nm and a small shoulder characteristic peak at 385 nm under neutral state which are assigned toπ-π^(*)conjugated structure of EDOT and *** being applied at the positive voltage,the copolymer color changes from dark blue to light blue,which is close to the color of poly(3,4-ethylenedioxythiophene)(PEDOT).Surprisingly,the copolymer P(EDOT:TPAC_(6)IL-BF_(4))shows shorter switching time of 0.37 s,0.30 s at 580 nm and 0.38 s,0.45 s at 1100 nm compared with *** is more intriguing that the copolymer P(EDOT:TPAC_(6)IL-BF_(4))exhibits electrochromism even in free supporting *** results confirm that the existence of imidazolium-based ionic liquid has an improvement on the ion diffusion properties and the switching time of conjugated polymer,which may provide a potential direction for the preparation of high-performance electrochromic materials.

关键词： Electrochromism Copolymer lonic liquid Electropolymerization Fast switching

Recent progress on the synthesis of 2-deoxy glycosides

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Science China Chemistry 2017年第9期60卷 1162-1179页

作者： jing Zeng yang xu Hao Wang Lingkui Meng qian Wan 0030 China Institute of Brain Research Huazhong University of Science and TechnologyWuhan 410030China

2-Deoxy glycosides are widely presented in natural products and clinical *** presence of 2-deoxy glycosides is essential for bioactivities of these *** report provides an overview of the recent advances in the stereoselective synthesis of 2-deoxy ***,the contents of this review covered the work published since the earlier reviews on this topic by Marzabadi(2000),Lowary(2009),Ding(2012) and Nagorny(2012).

关键词： 2-deoxy glycosides, glycosylation, stereoselective synthesis, oligosaccharides

Plate-like carbon-supported Fe_(3)C nanoparticles with superior electrochemical performance

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Rare Metals 2021年第6期40卷 1402-1411页

作者： Chuan Chen Sen qian tian-Hao Yao jing-Hong Guo Hong-kang Wang Electric Power Intelligent Sensing Technology and Application State Grid Corporation Joint Laboratory Future Science ParkBeijing 102209China Department of Electric Power Sensing Technology Future Science ParkGlobal Energy Interconnection Research Institute Co.LtdBeijing 102209China School of Electrical Engineering Xi’an Jiaotong UniversityXi’an 710049China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China

Iron-based anodes for lithium-ion batteries(LIBs)with higher theoretical capacity,natural abundance and cheapness have received considerable attention,but they still suffer from the fast capacity *** address this issue,we report a facile synthesis of plate-like carbonsupported Fe_(3)C nanoparticles through chemical blowing/carbonization under *** ultrafine Fe_(3)C nanoparticles are prone to be oxidized when exposing in air;thus,Fe_(3)C/C with mild oxidization and the fully oxidized product of Fe_(2)O_(3)/C are successfully prepared by controlling the oxidization *** applied as an anode material in LIB,the Fe_(3)C/C electrode demonstrates excellent cycle stability(826 mAh·g^(-1)after 120 cycles under 500 mA·g^(-1))and rate performance(410.6 mAh·g^(-1) under 2 A·g^(-1)),compared with the Fe_(2)O_(3)/C *** enhanced electrochemical performance can be ascribed to the synergetic effect of the Fe_(3)C with mild oxidation and the unique hierarchical structure of plate-like carbon decorated with Fe_(3)C *** importantly,this work may offer new approaches to synthesize other transition metal(e.g.,Co,Ni)-based anode material by replacing the precursor ingredient.

关键词： Lithium-ion batteries Fe_(3)C Mild oxidation Anode material Lithium storage

Deep Fault Diagnosis for Rotating Machinery with Scarce Labeled Samples

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Chinese Journal of Electronics 2020年第4期29卷 693-704页

作者： ZHANG jing tian jing WEN Tao yang Xiaohui RAO Yong xu Xiaobin School of Automation Hangzhou Dianzi University School of Electronic and Information Engineering Beijing Jiaotong University School of Mathematics and Statistics Henan University Hofon Automation Co. Ltd

Early and accurately detecting faults is crucial for the modern manufacturing *** proposed a novel Deep fault diagnosis(DFD) method for rotating machinery with scarce labeled samples.A spectrogram of the raw vibration signal is calculated by applying a Short-time Fourier transform(STFT).Several candidate Support vector machine(SVM) models are trained with different combinations of features in the feature pool with scarce labeled *** evaluating the pretrained SVM models on the validation set, the most discriminative features and best-performed SVM models can be selected, which are used to make predictions on the unlabeled *** predicted labels reserve the expert knowledge originally carried by the SVM *** are combined together with the scarce fine labeled samples to form an Augmented training set(ATS).Finally,a novel 2D deep Convolutional neural network(CNN)model is trained on the ATS to learn more discriminative features and a better *** results on two fault diagnosis datasets demonstrate the effectiveness of the proposed DFD.

关键词： Fault diagnosis Deep CNN Spectrograms Knowledge-transferring

The importance of vitellogenin receptors in the oviposition of the pond wolf spider, Pardosa pseudoannulata

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Insect Science 2022年第2期29卷 443-452页

作者： zhi-Ming yang tian-Yu Lu Yong Wu Na Yu Guang-Ming xu qian-qian Han Ze-Wen Liu Key Laboratory of Integrated Management of Crop Diseases and Pests(Ministry of Education) College of Plant ProtectionNanjing Agricultural UniversityNanjing210095 China

Vitellogenin receptor(VgR)is crucial for vitellogenin(Vg)uptake by *** is less known in Arachnida,especially in *** from only one VgR in an arthropod species,two VgRs,VgR-1 and VgR-2,were found in the pond wolf spider,Pardosa *** VgRs had the typical domains of the low-density lipoprotein receptor family except for the absence of the ligand-binding domain 1 in *** expression profiles showed that two VgR genes were consistently highly expressed in females and their ovaries,but VgR-1 was 48-fold that of VgR-2 in *** transcriptional level of VgR-1 was significantly downregulated by RNAi,but it did not work for VgR-2 although several trials were ***-1 and Vg-2 might be the ligands of VgR-1 because their expressions were also decreased in the dsVgR-1-treated *** VgR-1 prolonged the pre-oviposition period by 56 *** expression of VgRs and Vgs were upregulated by juvenile hormones(JHs),which suggested that JHs were the essential factors to vitellogenesis in the *** present study revealed the importance of VgR-1 in the spider oviposition,which will improve the understanding on VgR physiological functions in spiders.

关键词： juvenile hormone Pardosa pseudoannulata reproduction vitellogenin receptor

Synergistic etching and intercalation enables ultrathin Ti_(3)C_(2)T_(x)and Nb_(2)CT_(x)MXene nanosheets

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Rare Metals 2023年第4期42卷 1175-1185页

作者： qian-qian Xiong Tahir Muhmood Cheng-Xiao Zhao jing-San xu Xiao-Fei yang College of Science Nanjing Forestry UniversityNanjing210037China School of Chemistry and Physics Science and Engineering FacultyQueensland University of TechnologyBrisbaneQLD4001Australia

Transition metal-containing MXene has shown great potential in the promising research fields,and its performance strongly depends on the composition,structure,dimension,and surface ***,rational design and controllable synthesis of ultrathin two-dimensional(2D)MXene nanosheets with uniform surface terminations are of great ***,the use of 2D MXene,particularly in solar-powered photocatalysis and electrocatalysis,is restricted by the formation of thick,multi-layered MXene flakes with a small interlayer spacing produced from the conventional hydrofluoric acid(HF)etching *** this work,we report a few-layer MXene nanosheets by solely employing a mixture of lithium fluoride and hydrochloric acid as the etching *** etching and intercalation technique endows MXene with ultrathin 2D nanostructures;moreover,the use of fluoride salt,rather than harmful HF,offers a safer and environmentally-friendly synthetic route for scalable green production of 2D *** the obtained Ti_(3)C_(2)T_(x)and Nb_(2)CT_(x)nanosheets show a highly efficient photoelectrochemical performance superior to highly stacked MXene *** work highlights a mild,simultaneous etching and delamination strategy for the development of high quality of 2D MXene nanosheets.

关键词： MXene Electrocatalysis Hydrogen evolution reaction(HER) Two-dimensional(2D)nanomaterials