以富勒烯做前驅(qū)物,采用微波法簡(jiǎn)便快速制備了摻金碳點(diǎn)(CD_Au),并對(duì)其進(jìn)行了詳細(xì)表征。實(shí)驗(yàn)發(fā)現(xiàn)CD_Au對(duì)葡萄糖還原氯金酸生成納米金（AuNP）這一納米反應(yīng)具有較強(qiáng)的催化作用,并用SERS、RRS、熒光對(duì)該納米反應(yīng)進(jìn)行了研究。在納米反應(yīng)體系中加入As（Ⅲ）核酸適配體(Apt_As)后,碳點(diǎn)被適配體包裹,碳點(diǎn)催化作用減弱,導(dǎo)致生成的AuNP減少,其SERS強(qiáng)度減弱;當(dāng)加入靶分子As（Ⅲ）后與Apt_As特異性結(jié)合,使CD_Au得到釋放,使其催化活性恢復(fù),體系的SERS強(qiáng)度增強(qiáng),在一定范圍內(nèi),其增強(qiáng)程度與As（Ⅲ）濃度成線性關(guān)系,據(jù)此建立了一種簡(jiǎn)便快速測(cè)定0.04-0.23μg/L As（Ⅲ）的SERS定量分析新方法,檢出限為0.02μg/L。Apt_As-As（Ⅲ）-CD_Au2-葡萄糖-HAuCl₄體系RRS和光度法測(cè)定As（Ⅲ）的線性范圍分別為0.06-0.38μg/L和0.03-0.2μg/L,檢出限分別為0.03μg/... 

【文章來(lái)源】：廣西師范大學(xué)廣西壯族自治區(qū)

【文章頁(yè)數(shù)】：96 頁(yè)

【學(xué)位級(jí)別】：碩士

【部分圖文】：

適配體篩選循環(huán)圖[4]

碳納米材料的應(yīng)用[39]

碳材料發(fā)展史[44]

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[3]Resonance scattering spectral detection of ultratrace IgG using immunonanogold-HAuCl4-NH2OH catalytic reaction[J]. JIANG ZhiLiang1,2,ZHANG ShengSen1,LIANG AiHui2 & HUANG SiYu1 1 School of Environment and Resource,Guangxi Normal University,Guilin 541001,China; 2 Department of Material and Chemical Engineering,Guilin University of Technology,Guilin 541001,China.  Science in China（Series B:Chemistry）. 2008(05)



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