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261.
Interim Anatase Coating Layer Stabilizes Rutile@CrxOy Photoanode for Visible‐Light‐Driven Water Oxidation
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Dr. Huaqiang Zhuang Dr. Jianwei Miao Dr. Haowei Huang Prof. Jinlin Long Dr. Yingguang Zhang Dr. Hongbin Yang Dr. Sha He Prof. Yanhui Yang Xuxu Wang Bin Liu 《Chemphyschem》2015,16(7):1352-1355
Ternary core–shell heterostructured rutile@anatase@CrxOy nanorod arrays were elaborately designed as photoanodes for efficient photoelectrochemical water splitting under visible‐light illumination. The four‐fold enhanced and stabilized visible‐light photocurrent highlights the unique role of the interim anatase layer in accelerating the interfacial charge transfer from the CrxOy chromophore to rutile nanorods. 相似文献
262.
Comparison of copolymer emulsions of fluorine and siloxane‐containing acrylates with core–shell structure for water‐repellent cotton fabrics coatings
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![点击此处可从《先进技术聚合物》网站下载免费的PDF全文](/ch/ext_images/free.gif)
J. Lin C. Zheng M. N. Zhu Y. Z. Chen P. P. Lu Q. Liu X. F. Cai J. W. Zhuang X. M. Cai L. P. Liao G. Y. Yuan C. L. Xu 《先进技术聚合物》2015,26(1):68-76
This paper described the synthesis of copolymer emulsions of fluorine and siloxane‐containing acrylates for water‐repellent cotton fabrics coatings. Chemical composition, morphology structure, and properties of the latex copolymers were investigated by Fourier transform infrared (FTIR), dynamic light scattering (DLS), gel permeation chromatography (GPC), and transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Effects of water‐repellent functional monomers (Rf) on surface morphology, water contact angle, and water‐repellent properties of the coated fabric surface were also studied. The results indicated that Rf greatly influenced molecular mass distribution of the latex copolymers, the molecular aggregation states and orientation of Rf on the coated fabric surface, and water‐repellency of coated cotton fabrics. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
263.
Compact Coupled Graphene and Porous Polyaryltriazine‐Derived Frameworks as High Performance Cathodes for Lithium‐Ion Batteries
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Prof. Yuezeng Su Yuxin Liu Dr. Ping Liu Dr. Dongqing Wu Dr. Xiaodong Zhuang Prof. Fan Zhang Prof. Xinliang Feng 《Angewandte Chemie (International ed. in English)》2015,54(6):1812-1816
It is highly desirable to develop electroactive organic materials and their derivatives as green alternatives of cathodes for sustainable and cost‐effective lithium‐ion batteries (LIBs) in energy storage fields. Herein, compact two‐dimensional coupled graphene and porous polyaryltriazine‐derived frameworks with tailormade pore structures are fabricated by using various molecular building blocks under ionothermal conditions. The porous nanosheets display nanoscale thickness, high specific surface area, and strong coupling of electroactive polyaryltriazine‐derived frameworks with graphene. All these features make it possible to efficiently depress the dissolution of redox moieties in electrolytes and to boost the electrical conductivity of whole electrode. When employed as a cathode in LIBs, the two‐dimensional porous nanosheets exhibit outstanding cycle stability of 395 mAh g?1 at 5 A g?1 for more than 5100 cycles and excellent rate capability of 135 mAh g?1 at a high current density of 15 A g?1. 相似文献
264.
Inside Cover: Interim Anatase Coating Layer Stabilizes Rutile@CrxOy Photoanode for Visible‐Light‐Driven Water Oxidation (ChemPhysChem 7/2015)
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265.
Zhuya Yang Xiaoxia Ma Wenhong Tan Libin Zhou Xinying Zhuang Shude Yang 《Natural product research》2015,29(20):1909-1913
Two new chalcones, 2′,3,4,4′-tetrahydroxy-2-prenylchalcone (1) and 3-methoxy-2′,4,4′-trihydroxy-2-prenylchalcone (2), together with two known compounds, munsericin (3) and 3,4-dihydroxylonchocarpin (4), were isolated from the ethanol extract of the whole plant of Shuteria sinensis. Their structures were identified by spectroscopic analysis methods, such as 1D and 2D NMR, along with HR-MS data. Glucose metabolism activity of four compounds was tested, compounds 3 and 4 showed effect on the glucose consumption of insulin-resistant HepG2 cells. 相似文献
266.
Altering the Position of Phenyl Substitution to Adjust Film Morphology and Memory Device Performance
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Qianhao Zhou Rongcheng Bo Dr. Jinghui He Hao Zhuang Dr. Hua Li Dr. Najun Li Dr. Dongyun Chen Prof. Qingfeng Xu Prof. Jianmei Lu 《化学:亚洲杂志》2015,10(7):1474-1479
In this study, two structural isomers α‐PBT and β‐PBT, which only differ in the phenyl substituent position on the quinoline chromophore, have been designed and successfully synthesized. The influences of substituent position on the film morphology and the storage performance of the devices were investigated. Both molecules employed in the memory devices exhibited same nonvolatile binary (write‐once‐read‐many‐times; WORM) characteristics, but the switch threshold voltage (Vth) of the β‐PBT‐based device was clearly lower than that of the α‐PBT‐based device. Simulation results demonstrate that the variation of the phenyl substituent position led to different intermolecular stacking styles and thus to varied grain sizes for each film morphology. This work illustrates that altering the phenyl substituent position on the molecular backbone could improve the quality of the film morphology and reduce power consumption, which is good for the rational design of future advanced organic memory devices (OMDs). 相似文献
267.
The Convenient Synthesis of 11‐Methyl‐3,8‐disubstituted‐12‐aryl‐3,4,7,8,9,12‐hexahydro‐1H‐chromeno[2,3‐b]quinoline‐1,10(2H)‐dione Derivatives
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Guang‐Fan Han Li‐Jun Zhao Li‐Zhuang Chen Jia‐Wei Du Zhong‐Xia Wang 《Journal of heterocyclic chemistry》2015,52(4):1219-1225
The 2‐arylidene‐3‐oxobutanenitrile derivatives 2 were prepared by the Knoevenagel condensation between aldehydes and 3‐oxobutanenitrile 1 , which was obtained by acid hydrolysis of β‐aminocrotononitrile. 3‐Acetyl‐2‐amino‐4H‐chromen‐5(6H)‐one derivatives 3 were synthesized by reaction of 2‐arylidene‐3‐oxobutanenitrile 2 and 5‐substituted‐1,3‐cyclohexanedione in ethylene glycol. The 11‐methyl‐3,8‐disubstituted‐12‐aryl‐3,4,7,8,9,12‐hexahydro‐1H‐chromeno[2,3‐b]quinoline‐1,10(2H)‐dione derivatives 4 were obtained by Friedländer reaction of compounds 3 with 5‐substituted‐1,3‐cyclohexanedione, using p‐toluenesulfonic acid monohydrate as catalyst. The structures of all novel compounds were characterized by elemental analysis, IR, MS, and 1H NMR spectra. The crystal and molecular structure of compound 4f has been determined by single crystal XRD analysis. 相似文献
268.
Postfunctionalization of BN‐Embedded Polycyclic Aromatic Compounds for Fine‐Tuning of Their Molecular Properties
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Dr. Xiao‐Ye Wang Dong‐Chu Yang Fang‐Dong Zhuang Jia‐Jie Liu Dr. Jie‐Yu Wang Prof. Jian Pei 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(24):8867-8873
New BN‐embedded, thiophene‐fused, polycyclic aromatic compounds with planar geometry were designed and synthesized. The molecules showed excellent stability and chemical robustness. Postfunctionalization on this skeleton was demonstrated with a series of electrophilic bromination, palladium‐catalyzed cross‐coupling, and Knoevenagel condensation reactions. The π skeleton remained intact during these late‐stage transformations. The optical and electronic properties have been well tuned through incorporation of electron‐rich and ‐deficient groups on the backbone. This work shows the great advantage of the postfunctionalization strategy on BN‐containing polycyclic aromatic compounds for fast diversification and materials screening. 相似文献
269.
One new sesquiterpene compound, namely, illihenlactone A(1), and one new prenylated C_6–C_3 compound, illihenryione H(2), along with three known sesquiterpenes(3–5) were isolated from the stems of Illicium henryi. The structures of 1 and 2 were elucidated by spectroscopic evidence including NMR, HRESIMS and circular dichroism(CD). Compound 2 exhibited a weak inhibitory ratio for bglucuronidase release induced by platelet-activating factor(PAF) in rat polymorphonuclear leukocytes(PMNs) in vitro. 相似文献
270.
改进的QuEChERS结合气相色谱-三重四极杆质谱法快速测定酸肉中10种挥发性N-亚硝胺类化合物 总被引:1,自引:0,他引:1
采用改进的QuEChERS方法进行提取和净化,建立了气相色谱-三重四极杆质谱(GC-MS/MS)快速测定酸肉样品中10种挥发性N-亚硝胺类化合物的检测方法。样品经乙腈提取和正己烷除脂后,采用十八烷基硅烷键合硅胶(C18)和N-丙基乙二胺(PSA)混合吸附剂净化,采用DB-WAX色谱柱(30 m×0.25 mm×0.25μm)分离,在选择反应监测(SRM)模式下进行测定,外标法定量。10种N-亚硝胺类化合物在1~100μg/L范围内线性关系良好,相关系数(r)均0.99。10种N-亚硝胺类化合物的加标回收率为79.8%~115.3%,相对标准偏差(RSD)为0.6%~22.9%(n=6);方法的检出限(LOD,S/N=3)和定量限(LOQ,S/N=10)分别为0.04~0.3μg/kg和0.1~1μg/kg。该法简便快速,灵敏有效,适用于酸肉中N-亚硝胺类化合物的快速筛查和测定。 相似文献