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Acta Chimica Sinica(English Edition) 1985年第4期3卷 362-368页

作者： CHEN qing-yun YANG Zhen-yu Shanghai Institute of Organic Chemistry,Academia Sinica,Shanghai Shanghai Institute of Organic Chemistry Academia Sinica Shanghai

Perfluoroalkyl iodide RfI[Rf=（CF2）nO（CF2）2SO2F,n=2,（a）;n=4,（b）;（CF2）4Cl,（c）]reacted with substituted benzene C6H5Y（Y=alkyl,OCH3,CF3,F,Cl,Br,I）in the presence of copperin acetic anhydride to give the corresponding mixture of isomeric disubstituted benzene（RfC6H4Y）.The conversion and yield depend on both the amount of copper used and nature of *** explanation is that the reaction may involve a free radical *** perfluoroalkyl radicalcan be trapped by cyclohexene,isopropylbenzene and *** DMSO in place of acetic an-hydride as a solvent the reaction takes a different course,it is believed that the reaction in DMSOproceeds through a perfluoroalkylcopper intermediate.

关键词： Studies on fluoroalkylation and fluoroalkoxylation 2.Perfluoroalkylation of aromatics with perfluoroalkyl iodides in the presence of copper

Meta-objective with sub-micrometer resolution for microendoscopes

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Photonics Research 2021年第2期9卷 106-115页

作者： YAN LIU qing-yun yu ZE-MING CHEN HAO-YANG QIU RUI CHEN SHAO-JI JIANG XIN-TAO HE FU-LI ZHAO JIAN-WEN DONG School of Physics&State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-sen UniversityGuangzhou 510275China

Microendoscopes are vital for disease detection and clinical diagnosis. The essential issue for microendoscopes is to achieve minimally invasive and high-resolution observations of soft tissue structures inside deep body ***, the microscope objective is a must with the capabilities of both high lateral resolution in a wide field of view(FOV) and miniaturization in size. Here, we propose a meta-objective, i.e., microscope objective based on cascaded metalenses. The two metalenses, with the optical diameters of 400 μm and 180 μm, respectively, are mounted on both sides of a 500-μm-thick silica film. Sub-micrometer lateral resolution reaches as high as 775 nm in such a naked meta-objective, with monochromatic aberration correction in a 125 μm full FOV and near diffraction limit imaging. Combined with a fiber bundle microscope system, the single cell contour of biological tissue(e.g., water lily leaf) can be clearly observed, compared to the indistinguishable features in other conventional lens-based fiber bundle systems, such as plano–convex and gradient refractive index(GRIN) cases.

关键词： fiber resolution bundle

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Stress of Cl- is Stronger than That of Na+ on Glycine max Seedlings Under NaCl Stress

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Agricultural Sciences in China 2002年第12期1卷 1404-1409页

作者： LUO qing-yun, yu Bing-jun and LIU You-liang( College of Life Science , Nanjing Agricultural University , Key Laboratory of Crop Growth Regulation /National Center of Soybean Improvement, Ministry of Agriculture , Nanjing 210095 , P. R. China ) College of Life Science Nanjing Agricultural University Key Laboratory of Crop Growth Regulation /National Center of Soybean Improvement Ministry of Agriculture Nanjing 210095 P.R.China

Seedlings of six Glycine max cultivars were used to compare Cl- with Na+ in stress effects on soybean seedlings under NaCl stress. Results showed that stress of NaCl on G. max seedlings was mainly caused by Cl- and not by Na+. After treatment with isoosmotic solutions of Cl- (without Na+) and Na+ (without Cl-) respectively, fresh weight and height of G. max seedlings growing in solution of Cl- were much more stressed than those in solution of Na+. And the roots and leaves electrolyte leakage were much more increased under stress of Cl- than those under stress of Na+. Salt tolerance of G. max seedlings was mainly contributed to Cl- withheld in roots of seedlings to decrease its content in leaves.

关键词： Soybean (Glycinemax) Salt tolerance NaCl stress Cl^- Na^+

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氟烷基化和氟烷氧基化的研究 6.铜引发氟烷基碘对含硅炔烃的加成及其产物的化学转化

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化学学报 1986年第8期44卷 806-811页

作者：陈庆云杨震宇中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海

在催化量的铜存在下,RfI（1）在很温和的条件下于乙腈中与乙炔基三甲基硅烷（CH≡CSiMe3）（2）反应,生成较高产率的（E）和（Z）-氟烷基化产物混合物（3）.在相同条件下,I（CF2）6I（4）也能与2反应,主要生成单烷基化产物[I（CF2）6CH=... 详细信息

在催化量的铜存在下,RfI（1）在很温和的条件下于乙腈中与乙炔基三甲基硅烷（CH≡CSiMe3）（2）反应,生成较高产率的（E）和（Z）-氟烷基化产物混合物（3）.在相同条件下,I（CF2）6I（4）也能与2反应,主要生成单烷基化产物[I（CF2）6CH=CISiMe3]（5）和少量的双烷基化产物[Me3SiCI=CH（CF2）6CH=CISiMe3]（6）.当1与双（三甲基硅基）乙炔（Me3SiC≡CSiMe3）反应得1∶1的加成产物[Ri（Me2SiCH2I）C=CHSiMe3]（7）和（RfMe3SiC=CISiMe3）（8）.3与氢氧化钾在乙醇中反应得到（E）-RfCH=CHI（9）;与氟化钾反应则生成9的Z和E的异构体混合物;在二氯甲烷中用叔丁醇钾处理则生成相应的炔烃（10）.3在室温下对酸稳定,用溴光照后则主要生成（E）-RfCH=CBrSiMe3（11）.

关键词：炔烃烷基化脂肪族不饱和烃取代反应加成 ppm 异构体产物乙炔基三甲基硅烷氟烷基化学转化

氟烷基化和氟烷氧基化的研究 2.在铜存在下氟烷基碘与芳烃的反应

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化学学报 1985年第11期43卷 1073-1078页

作者：陈庆云杨震宇中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海

氟烷基碘（R,I）在铜存在下与芳烃,C6H5Y（Y=烷基,OCH3,CF3,F,Cl,Br,I）在乙酐中反应得到相应的氟烷基化芳烃（RfC6H4Y）混合物。转化率和产率与所用铜粉量和芳烃上的电子密度有关。带有供电子基的芳烃转化率和产率都较高;反之则低。反... 详细信息

氟烷基碘（R,I）在铜存在下与芳烃,C6H5Y（Y=烷基,OCH3,CF3,F,Cl,Br,I）在乙酐中反应得到相应的氟烷基化芳烃（RfC6H4Y）混合物。转化率和产率与所用铜粉量和芳烃上的电子密度有关。带有供电子基的芳烃转化率和产率都较高;反之则低。反应可能是自由基机理。氟烷基自由基能被环己烯和异丙苯所捕获。引发苯乙烯聚合生成含氟聚合物。芳环上的定位效应似乎也支持这一机理。若用DMSO为溶剂则可能是通过氟烷基铜中间体。

关键词：自由基机理异丙苯枯烯反应时间邻位异构体转化率氟烷基碘代苯碘苯四氢化苯环烯烃环己烯吸电子基芳烃产率

氟烷基化和氟烷氧基化的研究 8.钯(O)催化氟烷基碘对炔烃的加成反应

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化学学报 1986年第10期44卷 1025-1029页

作者：陈庆云杨震宇中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海

四（三苯基膦）钯（O）在温和的条件下能催化氟烷基碘RFI[RF=（CF2）nCl,n=2;n=4;n=6;RF=（CF3）nCF3,n=3;n=1;RF=H（CF2）4]对炔烃（CH≡CC4H9,CH≡CSiMe3,CH≡CPh）加成生成较高产率的加成产物.二（三苯基膦）二氯化钯（II）和二（三... 详细信息

四（三苯基膦）钯（O）在温和的条件下能催化氟烷基碘RFI[RF=（CF2）nCl,n=2;n=4;n=6;RF=（CF3）nCF3,n=3;n=1;RF=H（CF2）4]对炔烃（CH≡CC4H9,CH≡CSiMe3,CH≡CPh）加成生成较高产率的加成产物.二（三苯基膦）二氯化钯（II）和二（三苯基膦）氟烷基碘化钯（II）在同样的条件下无催化作用.2,2-硝基,亚硝基丙烷能部分阻止反应,这表明反应的可能中间体是自由基.而不是二（三苯基膦）氟烷基碘化钯（II）.

关键词：加成反应加成产物高产率炔烃脂肪族不饱和烃硝基丙烷氟烷基

Ideal Bi-Based Hybrid Anode Material for Ultrafast Charging of Sodium-Ion Batteries at Extremely Low Temperatures

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NANO-MICRO LETTERS 2025年第1期17卷 1-16页

作者： Bai, Jie Jia, Jian Hui Wang, yu Yang, Chun Cheng Jiang, qing Jilin Univ Key Lab Automobile Mat Sch Mat Sci & Engn Minist Educ Changchun 130022 Peoples R China

Metallic nanoparticles with excellent size controllability and high loading rate are obtained via ultrafast high temperature shock *** Bi/CNRs-15 electrode exhibits an unprecedented rate performance (237.9 mAh g-1 at 2 A g-1) at - 60 degrees C, while the energy density of the full cell can reach to 181.9 Wh kg-1 at - 40 degrees C.A novel strategy of high-rate activation is proposed to obtain high capacity and superior stability at low temperature by creating new active sites for interfacial reaction. Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at - 20 degrees C or lower. However, the key capability of ultrafast charging at ultralow temperature for SIBs is rarely reported. Herein, a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue, which is synthesized via a high temperature shock method. Such a hybrid shows an unprecedented rate performance (237.9 mAh g-1 at 2 A g-1) at - 60 degrees C, outperforming all reported SIB anode materials. Coupled with a Na3V2(PO4)3 cathode, the energy density of the full cell can reach to 181.9 Wh kg-1 at - 40 degrees C. Based on this work, a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.

关键词： Bi nanoparticles High temperature shock High-rate activation Ultrafast charging Low-temperature sodium-ion batteries

氟烷基化和氟烷氧基化的研究钯(O)催化氟烷基碘对烯烃的加成反应

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化学学报 1985年第11期43卷 1118-1120页

作者：陈庆云杨震宇中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海上海

氟烷基碘通过光、热、自由基引发剂引发对烯烃加成。1984年Ojima等报道过渡金属羰基络合物也能催化氟烷基碘对重键的加成。我们前已报道铜在乙酐、二缩二乙二醇二甲醚(DG)或乙腈中通过单电子转移引发氟烷基碘与烯烃、炔烃反应,反应条... 详细信息

氟烷基碘通过光、热、自由基引发剂引发对烯烃加成。1984年Ojima等报道过渡金属羰基络合物也能催化氟烷基碘对重键的加成。我们前已报道铜在乙酐、二缩二乙二醇二甲醚(DG)或乙腈中通过单电子转移引发氟烷基碘与烯烃、炔烃反应,反应条件温和产率较高。但钯是否也能催化氟烷基碘与烯烃反应仍属未知。本文首次报道四(三苯基膦)合钯(O)催化氟烷基碘对烯烃的加成反应。

关键词：羰基络合物单电子转移氟烷基过渡金属自由基引发剂烷氧基化二乙二醇二甲醚乙酐三苯基庚烯

氟烷基化和氟烷氧基化的研究 4.铜引发氟烷基碘对乙烯基三甲基硅烷的加成及其立体专一性合成相应的烯烃

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化学学报 1986年第3期44卷 265-269页

作者：陈庆云杨震宇中国科学院上海有机化学研究所中国科学院上海有机化学研究所上海

在催化量的铜存在下,氟烷基碘RFI（1）与乙烯基三甲基硅烷（2）在乙腈中反应生成高产率的氟烷基化产物8,二碘化物I（CF2）nI（4）也能与2反应生成单烷基化产物5和双烷基化产物6,5和6量的相对比例取决于所用2的量.这类反应能被对苯二酚阻... 详细信息

在催化量的铜存在下,氟烷基碘RFI（1）与乙烯基三甲基硅烷（2）在乙腈中反应生成高产率的氟烷基化产物8,二碘化物I（CF2）nI（4）也能与2反应生成单烷基化产物5和双烷基化产物6,5和6量的相对比例取决于所用2的量.这类反应能被对苯二酚阻止:被对二硝基苯部分阻止,碘苯未能捕获到氟烷基铜中间体.表明反应可能是单电子转移引发的自由基链式机理.3与二乙胺反应得高产率的反式氟烷基三甲基硅乙烯7.3与氢氧化钾在乙醇中反应得到的是7及其顺式异构体的混合物,将混合物用少量的溴处理可得纯的反式烯烃.

关键词：三甲基硅 ppm 甲基硅烷反应顺式异构体乙烯基链烯烃基有机层反式单电子碘化氢氢化合物二乙胺氟烷基烯烃脂肪族不饱和烃加成

Relationship between longitudinal changes in lipid composition and ischemic stroke among hypertensive patients

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World Journal of Clinical Cases 2025年第4期13卷 18-27页

作者： Cheng-Cheng Wei yu-qing Huang Cheng-Hong yu Department of Cardiology Tongxiang First People's HospitalTongxiang 314500Zhejiang ProvinceChina Department of Cardiology Guangdong Cardiovascular InstituteGuangzhou 510080Guangdong ProvinceChina

BACKGROUND Dyslipidemia was strongly linked to stroke,however the relationship between dyslipidemia and its components and ischemic stroke remained *** To investigate the link between longitudinal changes in lipid profiles and dyslipidemia and ischemic stroke in a hypertensive *** Between 2013 and 2014,6094 hypertension individuals were included in this,and ischemic stroke cases were documented to the end of *** changes of lipid were stratified into four groups:(1)Normal was transformed into normal group;(2)Abnormal was transformed into normal group;(3)Normal was transformed into abnormal group;and(4)Abnormal was transformed into abnormal *** examine the link between longitudinal changes in dyslipidemia along with its components and the risk of ischemic stroke,we utilized multivariate Cox proportional hazards models with hazard ratio(HR)and 95%*** The average age of the participants was 62.32 years±13.00 years,with 329 women making up 54.0%of the *** the course of a mean follow-up of 4.8 years,143 ischemic strokes *** normal was transformed into normal group was used as a reference,after full adjustments,the HR for dyslipidemia and ischemic stroke among abnormal was transformed into normal group,normal was transformed into abnormal group and abnormal was transformed into abnormal Wei CC et *** changed and ischemic stroke WJCC https://*** 2 February 6,2025 Volume 13 Issue 4 group were 1.089(95%CI:0.598-1.982;P=0.779),2.369(95%CI:1.424-3.941;P<0.001)and 1.448(95%CI:1.002-2.298;P=0.047)(P for trend was 0.233),*** In individuals with hypertension,longitudinal shifts from normal to abnormal in dyslipidemia-particularly in total and low-density lipoprotein cholesterol-were significantly associated with the risk of ischemic stroke.

关键词： Longitudinal change Hypertension Dyslipidemia Lipid profile Ischemic stroke