製作貴金屬奈米陣列螯合含硫醇鍵化合物以表面增強拉曼散射偵測水溶液中重金屬離子之方法開發研究

Use Surface-Enhanced Raman Scattering to detect hazardous metal Based on Thiol bond-containing compound - Modified Gold Nanoparticles

黃唯庭(Wei-Ting Huang)

指導教授 ： 黃俊嬴

高雄醫學大學/生命科學院/醫藥暨應用化學系碩士班/碩士(2016年)

摘要

重金屬汙染是現今的一個重要課題，有許多方法在探討如何檢測水溶液中的重金屬離子，尤其是常見的汞離子，而表面增強拉曼散射是近代新的檢測概念，高靈敏度是其最大特徵，是利用高熱點去檢測樣品之訊號。
在本實驗中將探討新的方法以檢測水溶液中的汞二價(Ⅱ)離子。以表面電漿共振效應方法著手，使用金與銀金屬奈米陣列作為基底並接上含硫醇鍵且距拉曼光譜活性之化合物，含硫醇鍵之化合物與汞離子進行螯合，藉由觀察其在測量汞離子前後表面增強拉曼散射圖譜之變化以達到檢測汞離子的效果。然而使用不同的溶劑會對陣列形成之排列有所不同，進而影響到拉曼訊號的增強效果。最後使用兩種方法檢測重金屬離子，觀察重金屬離子對表面增強拉曼散射的變化，並發展出一有效的高增強效果基材。

關鍵字

表面增強拉曼散射 ； 奈米陣列

並列摘要

Nowadays our Industrial development are more developed that produce heavy metal ions. Heavy metal ions contain toxins and accumulated in the body, the Earth caused pollution of the environment more besides destroying the environment even endanger health. Therefore we are committed to detect heavy metal ions’ existence in our daily life, to prevented contamination. Surface-enhanced Raman scattering (SERS) has proven to be promising for the detection of trace analytes. And the noble metal nanoparticles have broad range of applicability. Noble metal nanoparticles can increase Surface-enhanced Raman scattering (SERS) signal to detect heavy metal ions. However, the repeatability of noble metal nanoparticles is difficult to control. We planned to make noble metal form colloid particles form a regular array of nanoparticles patterns by adjusting the surface energy. We use SH- compound attached to nanoparticle arrays. Then the analytes which contain heavy metal may chelation with SH- compound. Finally, use Surface-enhanced Raman scattering (SERS) to detect enhanced signal of heavy metal.

並列關鍵字

Surface-enhanced Raman scattering(SERS) ； Nanoparticle

參考文獻

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