双硫腙在银溶胶中的表面增强拉曼光谱(SERS)研究

刘小龙; 王旭; 徐蔚青; 赵冰

光散射学报, 2004, 16 (2): 122, 网络出版: 2006-04-20

双硫腙在银溶胶中的表面增强拉曼光谱(SERS)研究

SERS Study on the Interaction of Dithizone with Silver Substrates

论文大纲

刘小龙王旭徐蔚青赵冰

作者单位

吉林大学超分子结构与材料教育部重点实验室,长春,130023

表面增强拉曼光谱双硫腙紫外光谱 SERS Dithizone UV-vis Spectroscopy

摘要

利用SERS技术能显著提高拉曼信号的优点,以银溶胶为基底,研究了双硫腙与溶胶中银的相互作用方式.首先我们通过双硫腙氯仿溶液的紫外光谱研究,认为在氯仿溶液中双硫腙在较低的浓度下(＜10-5 mol/L)是以单体的形式存在.通过对双硫腙单体在银溶胶中的表面增强拉曼光谱的研究,我们认为双硫腙是通过S,N与银基底作用,并且在很低的浓度下(10-7 mol/L)有很好的拉曼信号.

Abstract

From the UV-vis spectra of dithizone, we learn that dithizone is affected by concentration dependencies and solvatochromism that move UV-vis spectra of dithizone to lower wavelength. Dithizone is believed a free molecular below 10~(-5)mol/L. SERS, a Raman spectrum whose intensity exceeds by a factor of 10~4-10~6 than its normal spectrum is observed, is a good means to detect Dithizone. Using silver colloids as substrates, We investigate the interaction of dithizone with silver substrates and give our own explain: we learn that dithizone bonds silver through S and N.

参考文献

[1] . MawbyandH. M. N. H. Irving. ThecrystalstructureofprimaryZINC(Ⅱ)Dithizonate[J]. J. Inorg. Nuel. Chem., 1972, 34: 109.

[2] . M. N. H. Irving and A. M. Kiwan. Studies with Dithizone Part XXV. Secondary Copper (Ⅱ) Dithizone[J]. Anal. Chim. Acta., 1971, 56: 435.

[3] H. M. N. H. Irving and J. J. Cox. Studies with Dithizone. Part Ⅷ. Reactions with Organometallic Compounds[J]. J. Chem. SOc., 1961,1470.

[4] . S. Meriwether, E. C. Breitner and C. L. Sloan. The Photochromism of Metal Dithizone[J]. J. Am. Chem. Soc., 1965, 87: 4441.

[5] . Adsorption and Surface -Enhanced Raman of Dye on Silver and Gold Sols[J]. J. Phys. Chem., 1982, 86: 3391.

[6] 胡建强,吴继红,任斌等.纯化学还原方法制备银纳米棒及其SERS活性[J].光散射学报,2002,13(4):226.

刘小龙, 王旭, 徐蔚青, 赵冰. 双硫腙在银溶胶中的表面增强拉曼光谱(SERS)研究[J]. 光散射学报, 2004, 16(2): 122. 刘小龙, 王旭, 徐蔚青, 赵冰. SERS Study on the Interaction of Dithizone with Silver Substrates[J]. The Journal of Light Scattering, 2004, 16(2): 122.

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