| 3种核酸碱基(胞嘧啶、胸腺嘧啶、尿嘧啶)在银电极表面的吸附形态 |
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| 引用本文： | 郝艳玲,张星,方炎.3种核酸碱基(胞嘧啶、胸腺嘧啶、尿嘧啶)在银电极表面的吸附形态[J].光谱实验室,2011,28(4):2019-2024. |
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| 作者姓名： | 郝艳玲 张星 方炎 |
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| 作者单位： | 1. 兴义民族师范学院物理系 贵州省兴义市湖南街32号562400
2. 首都师范大学物理系 北京市纳米光电子学重点实验室北京市西三环北路105号100037 |
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| 基金项目： | 贵州省教育厅自然科学基金，黔西南州科技局科技计划 |
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| 摘 要： | 通过表面增强拉曼散射研究了胞嘧啶、胸腺嘧啶和尿嘧啶在粗糙银电极表面上的吸附形态随电极电位的变化关系.大量的结构信息可从丰富的表面拉曼信号及其随电极电位相应的变化而获得.分析表明在电极电位负移过程中,胞嘧啶一直通过N3位垂直吸附于纳米银颗粒表面；而胸腺嘧啶分子和尿嘧啶分子在表面的吸附状态都随电位改变发生了变化,较正电位下...
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| 关 键 词： | 表面增强拉曼散射 银电极 吸附 胞嘧啶 尿嘧啶 胸腺嘧啶 |
Adsorption Distributions of Three Nucleic Acid Bases (Cytosine, Thymine, Uracil)on Silver El ectrode Surface |
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| HAO Yan-Ling,ZHANG Xing,FANG Yan.Adsorption Distributions of Three Nucleic Acid Bases (Cytosine, Thymine, Uracil)on Silver El ectrode Surface[J].Chinese Journal of Spectroscopy Laboratory,2011,28(4):2019-2024. |
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| Authors: | HAO Yan-Ling ZHANG Xing FANG Yan |
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| Institution: | a(Department of Physics,Xingyi Normal University for Nationalities,Xingyi,Guizhou 562400,P.R.China)a(Beijing Key Lab for Nano-Photonics and nano-Structure,Capital Normal University,Beijing 100037,P.R.China) |
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| Abstract: | The adsorption distributions of three nucleic acid bases（cytosine,thymine,uracil） on silver electrodes surface were investigated by surface enhanced Raman scattering（SERS） along with change relationship of electrode potential.The much structure information was obtained from abundant surface Raman signal and change of signal along with electrode potential.The cytosine may keep the adsorbed condition perpendicularly via the N3-end on the silver electrode surface in the negative move process of electrode potential.While the surface adsorption conditions of thymine and uracil changed with potential change.At positive potential,thymine lies parallel the silver electrode via ring plane,and uracil is perpendicularly standing on the silver electrode through N3 and C2O7,at negative potential,the former is perpendicularly standing on the silver electrode via N1-C2O7 and the later is perpendicularly standing on the silver electrode adsorbed via O7. |
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| Keywords: | SERS Silver Electrode Adsorption Cytosine Uracil Thymine |
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