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1. Aptamer-conjugated Nanomaterials for Biological Targets Detection | |||
ZHANG Ge,PENG Cheng,HU Xiaoxiao | |||
Chemistry 28 May 2018 | |||
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Abstract:Aptamers offer unique advantages in terms of wide range of targets, high affinity and specificity, and have been widely used in many fields such as basic research, disease diagnosis, and drug development. Nanomaterials, due to their nanoscale sizes, shapes and structures, exhibit a variety of features such as large specific surface area and new properties of optical, magnetic, thermal and electrical performance. Hence, aptamer-conjugated nanomaterials composed of aptamers and nanomaterials combine both benefits, enabling high-specificity detection of biological targets in complex environments. This review summarizes the characteristics of various highly efficient aptamer-conjugated nanomaterials detection platforms and their advantages in detection of biotargets in recent years, and demonstrates their potential for biological detection and disease diagnosis. | |||
TO cite this article:ZHANG Ge,PENG Cheng,HU Xiaoxiao. Aptamer-conjugated Nanomaterials for Biological Targets Detection[OL].[28 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4745273 |
2. Electrocatalytic oxidation and voltammetric determination of tyrosine, tryptophan and their derivatives at a uracil grafted glassy carbon electrode | |||
Guang-feng Kang,Xiao-hong Zhu,Xiang- qin Lin | |||
Chemistry 22 March 2007 | |||
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Abstract:A uracil grafted glassy carbon electrode (Ura/GCE) was fabricated. The electrode was characterized by x-ray photoelectron spectroscopy (XPS), cyclic voltammertry (CV) and differential pulse voltammetry (DPV) techniques. The electrochemical behaviors of Trp, Tyr and their derivatives, such as dopamine (DA), epinephrine (EP) and norepinephrine (NE) at Ura/GCE were investigated. All these bioactive species can be electrocatalytically oxidized at significantly reduced overpotentials and generate sensitive current signals at Ura/GCE. The linear range (detection limit, s/n=3) obtained for Tyr and Trp was 1.8 -12 0 礛 (0.8 礛) and 1.8 - 890 礛 (0.8 礛), respectively. In the coexistence of 1.0 mM AA (Ep(DPV)=-0.02 V), the linear range (detection limit, s/n=3) obtained for DA, EP, NE was 0.37 -36 礛 (0.2 礛), 0.38-13 礛 (0.2 礛), and 1.8 -84 礛 (0.8 礛), respectively. The Ura/GCE showed good electrocatalytic ability and anti-interference ability. The mechanism for Trp (Tyr) electrocatalytic oxidation was proposed. | |||
TO cite this article:Guang-feng Kang,Xiao-hong Zhu,Xiang- qin Lin . Electrocatalytic oxidation and voltammetric determination of tyrosine, tryptophan and their derivatives at a uracil grafted glassy carbon electrode[OL].[22 March 2007] http://en.paper.edu.cn/en_releasepaper/content/11596 |
3. Platinum nanoclusters dispersed polypyrrole nanowires as electrocatalysts for fuel cells | |||
Li Jing,Lin Xiangqin | |||
Chemistry 22 March 2007 | |||
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Abstract:The composite of polypyrrole (PPy) nanowires containing highly dispersed Pt nanoclusters was synthesized on glassy carbon electrode (GCE) utilizing cyclic voltammetry (CV) method. The electrocatalytic activities toward oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR) have been investigated by CV and chronoamperometry. The PPy-Pt/GCE provided an ORR peak at about 0.52 V (vs. SCE) at 50 mV s-1. For MOR, a high ratio of forward anodic peak current to reverse anodic peak current was observed, indicating an efficient oxidation of methanol to CO2 on the PPy-Pt/GCE. The higher catalytic activity was attributed to the high dispersion of Pt nanoclusters in the larger surface area of the PPy nanowires and the synergic effect of the novel Pt core - PPy shell. The results revealed that the PPy-Pt nanocomposite was effective electrocatalyst for direct methanol fuel cells (DMFCs). | |||
TO cite this article:Li Jing,Lin Xiangqin. Platinum nanoclusters dispersed polypyrrole nanowires as electrocatalysts for fuel cells[OL].[22 March 2007] http://en.paper.edu.cn/en_releasepaper/content/11588 |
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