| 氯离子对固定银纳米颗粒SERS活性的影响 |
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| 引用本文： | 谭恩忠,殷鹏刚,郭林.氯离子对固定银纳米颗粒SERS活性的影响[J].光散射学报,2010,22(4):305. |
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| 作者姓名： | 谭恩忠 殷鹏刚 郭林 |
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| 作者单位： | 北京航空航天大学化学与环境学院;北京石油化工学院数理系; |
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| 摘 要： | 通过在硅片上修饰聚乙烯吡咯烷酮(PVP)对银纳米粒子进行组装,得到均一的表面增强拉曼光谱(SERS)基底。借助于此基底,在水溶液环境中,以异烟酸(INA)和罗丹明6g(R6g)作为探测分子,研究了氯离子(Cl-)对SERS增强的影响。结果表明,对于不同的探针分子,Cl-对银颗粒SERS活性的影响存在选择性。对于INA分子,在溶液中没有Cl-的情况下,分子通过羧基以锐角吸附在银颗粒表面,具有良好的SERS谱。在加入Cl-后,由于竞争吸附,INA分子脱附,SERS信号消失。R6g分子在银颗粒表面没有特异吸附,Cl-的加入并没有影响其与银颗粒的作用状态,在加入Cl-后SERS光谱没有发生显著变化。
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| 关 键 词： | 氯离子 表面增强拉曼光谱 异烟酸 罗丹明6g |
| 收稿时间： | 2009/5/30 |
SERS-activity of Immobilized Silver Nanoparticles: Effect of Chloride Ion |
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| TAN En-zhong,YIN Peng-gang,GUO Lin.SERS-activity of Immobilized Silver Nanoparticles: Effect of Chloride Ion[J].Chinese Journal of Light Scattering,2010,22(4):305. |
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| Authors: | TAN En-zhong YIN Peng-gang GUO Lin |
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| Institution: | TAN En-zhong1,2,YIN Peng-gang1,GUO Lin1(1.School of Chemistry and Environment,Beijing University of Aeronautics and Astronautics,Beijing 100191,China,2.Department of Mathematics and Physics,Beijing Institute of Technology Petrochemical,Beijing 102617,China) |
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| Abstract: | The uniform SERS(surface-enhanced Raman Scattering) substrates were obtained by assembling Ag nanoparticles on the silicon wafer which had been modified by polyvinylpyrrolidone(PVP).The effect of Cl-on SERS-activity was investigated using isonicotinic acid(INA) and Rhodamine6g(R6g)as probe molecules in aqueous solution with the as-prepared substrates.The results showed that effect of Cl-on SERS-activity varied with different probe molecules.For INA,SERS spectrum with good signal to noise ratio was received ... |
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| Keywords: | chloride ion(Cl-) surface-enhanced Raman scattering(SERS) spectrum isonicotinic acid(INA) Rhodamine6g(R6g) |
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