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Science China Chemistry 2018年第2期61卷 180-183页

作者： Tong Zhang xing-wang Lan Yu-Qiang Zhou nai-xing wang Yue-Hua Wu Yalan xing Jia-Long Wen Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beifing 100049 China Department of Chemistry William Paterson University of New Jersey New Jersey 07470 United States Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry University Beijing 100083 China

A copper-catalyzed decarboxylative oxidative coupling of α,β-unsaturated carboxylic acids with non-cyclic ethers is *** method provides a new approach for C(sp^3)–H bond functionalization of non-cyclic ethers. Mech... 详细信息

关键词： C(sp^3)–H bond functionalization non-cyclic ethers decarboxylative oxidative coupling α β-unsaturated carboxylic acids

Synthesis of Racemic Bis[2-(6-fluoro-2-chromanyl)-2-hydroxyethyl]-amine Methanesulfonic Acid Salt Using Lithium Aluminum Amide as a Promoter in Regioselective Ring Opening of Epoxide

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Chinese Chemical Letters 2005年第12期16卷 1577-1580页

作者： Yun Xu YANG nai xing wang Ya Lan xing Wu Wei wang Jia ZHAO Gui Xia wang Shi TANG Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100101 Beijing University of Chemical Technology Beijing 100029

Lithium aluminium amide [LiAI（NHR）4] 5 obtained by treating the primary amine 4 with LiAlH4 could promote the ring opening of epoxide 2 and led to high regioselective product of racemic bis[2-（6-fluoro-2-chromanyl... 详细信息

关键词： Epoxide lithium aluminium amide bis[2-(6-fluoro-2-chromanyl)-2-hydroxyethyl]-amine

ABSORPTION SPECTRA OF 4f ELECTRON TRANSITIONS OF NEODYMIUM COMPLEX WITH 8-HYDROXYQUINOLINE AND OCTYLPHENOL POLY(ETHYLENEGLYCOL)ETHER

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Chinese Chemical Letters 1992年第10期3卷 855-856页

作者： nai xing wang Jian Guo GAO Department of Chemistry Shandong UniversityJinan250100 Research Institute of Qilupetro-Chemical Co Zibo255434

In this paper the absorption spectra of 4f electron transitions of the neodymlum complex with 8-hydroxyquinoline and octylphenol poly(ethyleneglycol)ether have been studied. The marked intensification of the band at low octylphenol poly(ethyleneglycol)ether concentration is found normally at 575 nm, and its resolution into three sharp bands centering at 572, 580 and 584 nm. The absorbances of the absorption maxima are 3.5 (at 572 nm), 7.2 (at 580 nm) and 10.2 (at 584 nm) times greater than that of the chloride.

关键词： ABSORPTION SPECTRA OF 4f ELECTRON TRANSITIONS OF NEODYMIUM COMPLEX WITH 8-HYDROXYQUINOLINE AND OCTYLPHENOL POLY ETHYLENEGLYCOL)ETHER

ABSORPTION SPECTRA OF 4f ELECTRON TRANSITIONS IN THE SYSTEM OF NEODYMIUMSEMIXYLENOL ORANGE-CETYLPYRIDINIUM CHLORIDE

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Chinese Chemical Letters 1991年第5期2卷 381-382页

作者： nai xing wang Department of Chemistry, Shandong University, Jinan, 250100

In this paper the absorption spectra of Nd-SXO-CPC complex by 4f electron transitions have been studied by zero-order and fourth-order derivative spectrophotome-try. The molar absorptivity is 2.6×10~3 ***^(-1).cm^(-1) at 585 nm, the fourth-order derivative molar absorptivity is 1.4×10~4 ***^(-1).cm^(-1) at 584.5(-) and 587(+) nm. They are 300 times and 1600 times greater than those of the chloride, respectively.

关键词： Nd than ABSORPTION SPECTRA OF 4f ELECTRON TRANSITIONS IN THE SYSTEM OF NEODYMIUMSEMIXYLENOL ORANGE-CETYLPYRIDINIUM CHLORIDE

ELECTROANALYTICAL STUDY OF XANTHOPHYLL AND ITS APPLICATION

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Chinese Chemical Letters 1991年第1期2卷 27-28页

作者： nai xing wang Jian Min CHEN Xiao Lan ZHANG Department of Chemistry,Fudan University,Shanghai 200433

The electroanalytical behaviour of xanthophyll was studied by differential pulse polarography and cyclic *** reduction wave of xanthophyll at -0.92V(***/AgCl)in 1.25% tetrabutyl ammonium chloride solution(TBAC)was found for the first *** optimum conditions for the determination of xanthophyll by DPP were established. The results from the application of cyclic voltammetry to study electrode process behaviour showed that the electrode reaction of xanthophyll at a hanging mercury electrode is quasi-reversible reaction.

关键词： ELECTROANALYTICAL STUDY OF XANTHOPHYLL AND ITS APPLICATION ITS

SIMULTANEOUS DETERMINATION OF NEODYMIUM AND PRASEODYMIUM BY ZERO-ORDER AND FOURTH-ORDER DFRIVATIVE SPECTROPHOTOMETRY

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Chinese Chemical Letters 1991年第1期2卷 41-44页

作者： nai xing wang Department of Applied Chemistry,Shandong University,Jinan,250100,Shandong,People’s Repulic of China

With derivative spectrophotometric method,the complexes of lanthanides with 2-(5-bromo-2-pyridylazo)-5-diethylaminophen- ol(5-Br-PADAP)in the presence of octylphenol poly(ethyleneg- lycol)ether(TX-100)were *** is found that the maximum absorption of fourth-order derivative spectra of the neodymium complex by 4f electron transitions is at 579(+)nm and 582(-)nm with molar derivative absorptivities of 5.2×10~3 ***^(-1).cm^(-1). The maximum absorption of the zero-order derivative spectra of the complexes for neodymium and praseodymium is at 580hm,the molar absorptivities are 1.47×10~5 ***^(-1).cm^(-1)for Nd and 1.26 ×10~5 ***^(-1).cm^(-1)for *** component ratio of the complex is Nd:5-Br-PADAP=1:***'s law is obeyed in the range of 0-3.75μg of Nd and Pr in 25ml of *** method has been used for the simultaneous determination of Nd and Pr in four synthetic samples and the results obtained are satisfactory.

关键词： der SIMULTANEOUS DETERMINATION OF NEODYMIUM AND PRASEODYMIUM BY ZERO-ORDER AND FOURTH-ORDER DFRIVATIVE SPECTROPHOTOMETRY

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富勒烯氢化物的合成研究进展

有机化学 2006年第7期26卷 922-927页

作者：张军平王乃兴汪武卫赵嘉王桂霞唐石中国科学院理化技术研究所北京100101

综述了十几年来富勒烯氢化物各种合成方法,不同的氢化方法所得的氢化物不同;并对富勒烯氢化物在储氢材料方面的应用作了展望.

关键词：富勒烯富勒烯氢化物合成储氢材料

Photochemical Reactions of N,N’-Dimethylethylene-diamine and piperazine with [60]Fullerene

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Photochemical Reactions of N,N’-Dimethylethylene-diamine an...

Controllable synthesis of biomimetic wood stem nanoporous high entropy oxides catalysts for oxygen evolution reaction

中国感光学会第六次全国感光（影像）科学大会暨第五届青年学术交流会

作者： nai-xing wang, Wei Liu,Lin wang,Chenghua Sun,Wenjun Li(Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100101,P.R. China)

N,N′-dimethylethylenediamine and piperazine reacted with [60]fullerene byphotoinduced-electron transfer to form the adduct compounds in a short reaction time with a high yield.

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Nano Research 2025年第1期18卷 107-117页

作者： Wei wang Weiqi wang Huihui wang xing Lu Jinwen Zhang Yunzhuo Lu School of Materials Science and Engineering Dalian Jiaotong UniversityDalian 116028China School of Intelligence and Electronic Engineering Dalian Neusoft University of InformationDalian 116023China Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment Guangzhou Maritime UniversityGuangzhou 510725China

Bubbles generated during the oxygen evolution reaction(OER)in water splitting readily adhere to the electrode surface,thereby impeding contact between the electrolyte and the active sites,thereby increasing the ***,it is imperative to elucidate the bubble release behavior and engineer electrodes that facilitate faster bubble *** this study,inspired by the wood stem of the Norway spruce,we synthesized a gradient nanoporous high-entropy oxide(GNP-HEO)electrode with a controllable pore *** GNP-HEO,featuring a well-controlled gradient in pore size,is achieved through a straightforward strategy combining selective laser melting with selective phase *** unique gradient nanoporous structure not only facilitates bubble release but also diminishes the bubble shielding effect in OER,thereby enhancing electrocatalytic *** affect interaction of Al,Co,Cr,Fe,and Ni,coupled with the gradient nanoporous structure,yields exceptional OER performance,evidenced by an overpotential of 250 mV at a current density of 50 mA/cm^(2) and a Tafel slope of 38.0 mV/dec in 1 M *** functional theory calculations confirm that the GNPHEO adheres to the adsorbate evolution mechanism reaction pathway and exhibits significant *** work highlights a promising approach for the design and synthesis of high-performance OER electrocatalysts.

关键词： oxygen evolution reaction high-entropy oxides selective phase dis-solution selective laser melting gradient nanoporous

Pancreatic stent improves the success rate of needle-knife papillotomy in patients with difficult biliary cannulation

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World Journal of Gastroenterology 2025年第1期31卷 58-67页

作者： Mu-Hsien Lee Cheng-Hui Lin Chi-Huan Wu Yung-Kuan Tsou Kai-Feng Sung Sheng-Fu wang nai-Jen Liu Department of Gastroenterology and Hepatology Chang Gung Memorial Hospital and Chang Gung University College of MedicineTaoyuan 33305Taiwan School of Medicine Chang Gung UniversityTaoyuan 33305Taiwan

BACKGROUND Needle-knife precut papillotomy(NKP)is typically performed ***,it remains unclear whether pancreatic stent(PS)placement can improve the outcomes of *** To explore whether PS placement improves the success rate of NKP in patients with difficult biliary *** This single-center retrospective study included 190 patients who underwent NKP between January 2017 and December 2021 after failed conventional biliary *** cases with incidental pancreatic duct cannulation during conventional biliary cannulation,the decision for pre-NKP PS placement was made at the endoscopist's *** primary outcome was the difference in the NKP success rate between patients with and without PS placement;the secondary outcome was the adverse event *** Among the 190 participants,82 received pre-NKP PS(PS-NKP group)whereas 108 did not[freehand or freehand NKP(FH-NKP)group].Post-NKP selective biliary cannulation was successful in 167(87.9%)patients,and the PS-NKP had a significantly higher success rate than the FH-NKP group(93.9%vs 83.3%,P=0.027).The overall adverse event rates were 7.3%and 11.1%in the PS-NKP and FH-NKP groups,respectively(P=0.493).A periampullary diverticulum(PAD)and significant intraoperative bleeding during NKP were independently associated with NKP failure;however,a pre-NKP PS was the only predictor of NKP *** the 44 participants with PADs,the PS-NKP group had a non-significantly higher NKP success rate than the FH-NKP group(87.5%and 65%,respectively;P=0.076).CONCLUSION PS significantly improved the success rate of NKP in patients with difficult biliary cannulation.

关键词： Difficult biliary cannulation Endoscopic retrograde cholangiopancreatography Needle-knife papillotomy Pancreatic stent Selective biliary cannulation