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113.
Lukas Hußling Wolfgang Knoll Helmut Ringsdorf Franz-Josef Schmitt Jianling Yang 《Macromolecular Symposia》1991,46(1):145-155
The synthesis of biotin- functionalized organic mercaptans and their chemisorption on gold surfaces is described. Biotin bound covalently to self assembled monolayers is recognized by streptavidin from aqueous buffer solutions. Spacer length and packing density of the biotin labels on the organic surface determine the docking kinetics. With a flexible and hydrophilic spacer very fast -diffusion controlled-docking is observed. As an alternative method of self assembly the spreading of organic mercaptans on water surfaces is established. Pressure-area diagrams of different functionalized mercaptans and disulfides are shown and their monolayer properties are discussed. 相似文献
114.
Yin Zekun Wang Xixin Song Min Wu Zhigang Li Ziqing Wang Xiaoliu Zhu Miao Liu Dongxin Zhao Jianling 《Journal of Solid State Electrochemistry》2020,24(6):1313-1324
Journal of Solid State Electrochemistry - A Cu2O/Cu columnar array electrode that integrates the active materials and current collector was fabricated through in situ thermal oxidation of the... 相似文献
115.
对牛顿环实验中干涉宽度的变化对测量过程中各种物理量的影响进行分析,提出了牛顿环实验数据处理方法,找到了减小测量误差钧途径。 相似文献
116.
High-internal-ionic liquid-phase emulsions 总被引:1,自引:0,他引:1
High-internal-ionic liquid-phase emulsions were formed for the first time. The novel emulsions are very stable and do not involve any volatile organic solvent. They have great potential of applications in different fields, such as material synthesis, extraction, encapsulation, and chemical reactions. 相似文献
117.
Ultracompact and dynamically tunable plasmonic THz switch based on graphene microcavity metamaterial
Optical Review - We propose and discuss a compact and tunable plasmonic terahertz (THz) metamaterial switch based on graphene microcavity. Due to the joint effect of graphene plasmon resonances and... 相似文献
118.
Yanqiu Su Xiaofei Yu Lanlan Li Lili Dong Hui Yan Jianling Zhao 《Journal of nanoparticle research》2017,19(7):247
The study of metallic nanoflowers has attracted more and more attention because of their larger surface areas and active sites, which could be applied for surface-sensitive areas. Despite these excellent characteristics, it is still very hard to synthesize noble metal nanoflowers as the flower-like structure is apt to change into some more stable shapes which are covered by lower energy surfaces. In this study, Pt-Co nanoflowers were successfully synthesized by a two-step method via the reaction between Co nanoparticles and Pt precursor. From the transmission electron microscopy (TEM) images, it could be seen clearly that the products possessed a flower-like nanostructure. The morphology of the final products depended on a number of parameters, such as the reaction time and the reaction temperature. Based on the experimental results and theoretical calculation, the formation of nanoflowers could be attributed to the galvanic replacement reaction between Co nanoparticles and Pt precursor. In addition, the electrochemical catalytic activity of Pt-Co nanoflowers toward methanol oxidation was also evaluated in comparison with that of commercial Pt black. Owing to the special structure, the electro-catalytic activity and stability of Pt-Co nanoflowers were much better than those of commercial Pt black. 相似文献
119.
Dr. Xiaofei Yu Dr. Lanlan Li Yanqiu Su Dr. Wei Jia Lili Dong Prof. Dr. Dingsheng Wang Prof. Dr. Jianling Zhao Prof. Dr. Yadong Li 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(14):4960-4965
Platinum–copper nanoframes were produced from copper nanoparticles by a one‐pot synthesis method. The growth mechanism was thoroughly studied by experiment and theoretical calculations. Owing to the unique structure, Pt‐Cu nanoframes exhibited significantly enhanced catalytic activity toward the electro‐oxidation of methanol compared to commercial Pt black. 相似文献
120.
毛细管电泳法测定过氧化氢酶与天然抗氧化剂协同清除羟自由基作用 总被引:1,自引:0,他引:1
在抗坏血酸/Fe2+羟自由基产生体系中,以苯甲酸为羟自由基捕获剂,建立了羟自由基的毛细管电泳分析方法。优化了背景缓冲液的pH值、电解质浓度、表面活性剂浓度及分离电压。在最优的电泳条件下,研究了羟自由基产生体系中各底物浓度和反应时间对产物生成量的影响。本方法可在15 min内实现体系中的各物质的分离;产物间羟基苯甲酸的线性范围是5×10!6~1×10!3mol/L,检出限为2.8×10!7mol/L。将本方法用于血清基质中过氧化氢酶、原花青素和绿原酸对羟自由基IC50的测定,并研究了过氧化氢酶与原花青素及与绿原酸的协同清除羟自由基作用。结果表明,过氧化氢酶与原花青素及与绿原酸均存在协同清除羟自由基作用,在过氧化氢酶与原花青素的协同作用间还存在量效关系。 相似文献