A dual-mode colorimetric and fluorometric "light on" sensor for thiocyanate based on fluorescent carbon dots and unmodified gold nanoparticles
文献类型：期刊论文
| 作者 | Zhao,Dan; Chen,Chuanxia; Lu,Lixia; Yang,Fan; Yang,Xiurong |
| 刊名 | analyst
 |
| 出版日期 | 2015 |
| 卷号 | 140期号:24页码:8157-8164 |
| 关键词 | RESONANCE ENERGY-TRANSFER TRANSFER FRET QUANTUM DOTS SENSING PLATFORM HIGH-SENSITIVITY SAMPLES SYSTEM SALIVA WATER PHOTOLUMINESCENCE |
| 通讯作者 | yang,f |
| 英文摘要 | a novel, highly sensitive and selective dual-readout (colorimetric and fluorometric) sensor based on fluorescent carbon dots (cds) and unmodified gold nanoparticles (aunps) for the detection of thiocyanate (scn-) was proposed. amino-functionalized cds could be readily adsorbed onto the surface of citrate-stabilized aunps through au-n interactions, leading to the aggregation of aunps and the nonfluorescent off-state of cds arising from potential fluorescence resonance energy transfer (fret). however, scn- had a stronger affinity toward aunps and could compete with cds to bind onto the surface of aunps in priority, which prevented the aggregation of aunps and fluorescence quenching of cds. correspondingly, both the colorimetric and fluorometric signals remained "light-on". the color of the sensing solution remained red and the fluorescence remained unquenched. a distinguishable change in the color was observed at a scn- concentration of 1 mu m by the naked eye and a detection limit as low as 0.036 mu m was obtained by virtue of fluorescence spectroscopy. both colorimetric and fluorometric sensors exhibited excellent selectivity toward scn- over other common metallic ions and anions. in addition, such a sensing assay featured simplicity, rapidity, cost-effectiveness and ease of operation without further modification. the accuracy and precision were evaluated based on the quantitative detection of scn- in tap water and saliva samples with satisfactory results. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000365233300013 |
| 公开日期 | 2016-05-31 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/65189]  |
| 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 | Zhao,Dan,Chen,Chuanxia,Lu,Lixia,et al. A dual-mode colorimetric and fluorometric "light on" sensor for thiocyanate based on fluorescent carbon dots and unmodified gold nanoparticles[J]. analyst,2015,140(24):8157-8164. |
| APA | Zhao,Dan,Chen,Chuanxia,Lu,Lixia,Yang,Fan,&Yang,Xiurong.(2015).A dual-mode colorimetric and fluorometric "light on" sensor for thiocyanate based on fluorescent carbon dots and unmodified gold nanoparticles.analyst,140(24),8157-8164. |
| MLA | Zhao,Dan,et al."A dual-mode colorimetric and fluorometric "light on" sensor for thiocyanate based on fluorescent carbon dots and unmodified gold nanoparticles".analyst 140.24(2015):8157-8164. |
入库方式： OAI收割
来源：长春应用化学研究所
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