11-Mercaptoundecanoic acid directed one-pot synthesis of water-soluble fluorescent gold nanoclusters and their use as probes for sensitive and selective detection of Cr3+ and Cr6+
文献类型：期刊论文
| 作者 | Sun J ; Zhang J ; Jin YD |
| 刊名 | journal of materials chemistry c
 |
| 出版日期 | 2013 |
| 卷号 | 1期号:1页码:138-143 |
| 关键词 | HEXAVALENT CHROMIUM SINGLE-CRYSTAL METAL IONS NANOPARTICLES CLUSTERS MERCURY(II) COMPLEXES REDUCTION NANOCRYSTALS SPECTROMETRY |
| ISSN号 | 2050-7526 |
| 通讯作者 | sun j |
| 中文摘要 | we report a one-pot approach to prepare fluorescent gold nanoclusters (auncs) from haucl4 by simply using 11-mercaptoundecanoic acid (11-mua) as a reducing and capping agent, in an aqueous solution of naoh at room temperature. the as-prepared water-soluble auncs with average diameters of 1.8 +/- 0.4 nm exhibit a unique fluorescence excitation at 285 nm, a maximum emission at 608 nm, and a quantum yield of 2.4%. we find that the fluorescence of 11-mua-auncs can be quenched by several metal ions but selectively by cr3+ ions when using edta as the masking agents for other metal ions. this phenomenon is further exploited as a "turn-off" fluorescent sensor for sensitive and selective detection of cr3+ ions. upon the quantitative addition of cr3+ in the presence of edta, the fluorescence intensity quenches linearly within the range of 25 nm to 10 mu m with high sensitivity (lod = 26 nm, s/n = 3). furthermore, the 11-mua-auncs could be used to detect cr6+ indirectly by using ascorbic acid to reduce cr6+ into cr3+ in aqueous solution. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000314788300018 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50373]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Sun J,Zhang J,Jin YD. 11-Mercaptoundecanoic acid directed one-pot synthesis of water-soluble fluorescent gold nanoclusters and their use as probes for sensitive and selective detection of Cr3+ and Cr6+[J]. journal of materials chemistry c,2013,1(1):138-143. |
| APA | Sun J,Zhang J,&Jin YD.(2013).11-Mercaptoundecanoic acid directed one-pot synthesis of water-soluble fluorescent gold nanoclusters and their use as probes for sensitive and selective detection of Cr3+ and Cr6+.journal of materials chemistry c,1(1),138-143. |
| MLA | Sun J,et al."11-Mercaptoundecanoic acid directed one-pot synthesis of water-soluble fluorescent gold nanoclusters and their use as probes for sensitive and selective detection of Cr3+ and Cr6+".journal of materials chemistry c 1.1(2013):138-143. |
入库方式： OAI收割
来源：长春应用化学研究所
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