Size-controlled sensitivity and selectivity for the fluorometric detection of Ag+ by homocysteine capped CdTe quantum dots
文献类型：期刊论文
| 作者 | Jiao, Hangzhou ; Zhang, Ling ; Liang, Zhenhua ; Peng, Guihua ; Lin, Hengwei |
| 刊名 | MICROCHIMICA ACTA
 |
| 出版日期 | 2014 |
| 卷号 | 181期号:42320页码:1393 |
| 中文摘要 | We have synthesized water dispersible CdTe quantum dots (QDs) in different sizes and with various capping reagents, and have studied the effects of their size on the sensitivity and selectivity in the fluorometric determination of metal ions, particularly of silver(I). It is found that an increase in the particle size of homocysteine-capped CdTe QDs from 1.7 nm to 3.3 nm and to 3.7 nm enhances both the sensitivity and selectivity of the determination of Ag(I) to give an ultimate limit of detection as low as 8.3 nM. This effect can partially be explained by the better passivation of surface traps on smaller sized QDs via adsorption of Ag(I), thereby decreasing the apparent detection efficiency. In addition, the presence of CdS in the CdTe QDs is likely to play a role. The study demonstrates that an improvement in sensing performance is accomplished by using QDs of fine-tuned particle sizes. Such effects are likely also to occur with other QD-based optical probes. |
| 公开日期 | 2015-09-20 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/11792]  |
| 专题 | 宁波材料技术与工程研究所_2014专题 |
| 推荐引用方式 GB/T 7714 | Jiao, Hangzhou,Zhang, Ling,Liang, Zhenhua,et al. Size-controlled sensitivity and selectivity for the fluorometric detection of Ag+ by homocysteine capped CdTe quantum dots[J]. MICROCHIMICA ACTA,2014,181(42320):1393. |
| APA | Jiao, Hangzhou,Zhang, Ling,Liang, Zhenhua,Peng, Guihua,&Lin, Hengwei.(2014).Size-controlled sensitivity and selectivity for the fluorometric detection of Ag+ by homocysteine capped CdTe quantum dots.MICROCHIMICA ACTA,181(42320),1393. |
| MLA | Jiao, Hangzhou,et al."Size-controlled sensitivity and selectivity for the fluorometric detection of Ag+ by homocysteine capped CdTe quantum dots".MICROCHIMICA ACTA 181.42320(2014):1393. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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